investment and uncertainty with time to build evidence from entry into u s copper mining abstract the standard real options model predicts that increased uncertainty discourages investment when projects are large and take time to build however that prediction can be reversed we investigate the investment uncertainty relationship empirically using historical data on opening dates of new u s copper mines large irreversible projects with substantial construction lags both the timing of the decision to go forward and the price thresholds that trigger that decision are assessed in particular we build upon a reduced form analysis to construct a structural model of entry we find that in this market greater uncertainty encourages investment and lowers the price thresholds for many mines

the value of the option to wait and see abstract this note shows a very simple way to incorporate the effects of uncertainty about the accuracy of present value estimates into the firm s option to delay irreversible investment it is shown that if the firm s priors about the distribution of present value are sufficiently diffuse a reduction in the accuracy of present value estimates will increase the value of delay while learning will reduce its value

an empirical equilibrium job search model with search on the job and heterogeneous workers and firms in this article we present and estimate a synthesis of previous equilibrium search models allowing for continuous distributions of workers opportunity costs of employment as well as firms productivities the model allows for on the job search and we assume that job offer arrival rates for workers are independent of their labor market state we derive the theoretical implications of these assumptions we provide simulations and we develop a semiparametric estimation procedure that we apply to a dataset of individual labor market histories

nominal price rigidity money supply endogeneity and business cycles abstract this paper investigates the ability of nominal price rigidity to explain the co movement of inflation with the cyclical component of output observed in the post war u s data a dynamic general equilibrium model is constructed with the introduction of monopolistic competition and nominal price rigidity in a standard real business cycle model allowing for an endogenous money supply rule it is then demonstrated that sticky price models can explain the observed associations between movements in inflation and output much better than flexible price models this result depends little on whether money supply is assumed to be endogenous or not

an option pricing approach to evaluating petroleum projects abstract option pricing applications in capital budgeting decisions are still in the development stage this paper uses concepts and methods from option pricing theory to evaluate real projects rather than financial ones within a petroleum projects context such real options include development and operations of satellite fields break even values of incremental capacity and flexibility value with compound development and operations options the option pricing results may be quite different from those obtained by traditional capital budgeting and decision tree approaches some related papers on real options are also briefly noted

estimated general equilibrium models for the evaluation of monetary policy in the us and europe a persistent criticism of general equilibrium models of monetary policy which incorporate nominal inertia in the form of the new keynesian phillips curve nkpc is that they fail to capture the extent of inflation inertia in the data in this paper we derive a general equilibrium model based on optimising behaviour but which also implies a data consistent nkpc specifically our model accounts for nominal inertia in both price and wage setting as well for habits in consumption using us and european data from 1970 to 1998 our parameter estimates reveal that i there is relatively more inertia in price setting in europe ii wage contracts last longer in the us iii the extent of backward looking behaviour in price and wage setting is statistically significant but small in both the us and europe and iv significant habits effects are present in european consumption finally we simulate the effects of monetary policy and find that while the magnitude of the impact of monetary policy on the endogenous variables in our estimated models are similar to other econometric studies the dynamic paths for variables display less inertia than is typically found in studies which use output gaps to proxy changes in marginal costs

investment under uncertainty in information technology acquisition and development projects in this paper we develop two models for the valuation of information technology it investment projects using the real options approach the it investment projects discussed in this paper are categorized into development and acquisition projects depending upon the time it takes to start benefiting from the it asset once the decision to invest has been taken the models account for uncertainty both in the costs and benefits associated with the investment opportunity our stochastic cost function for it development projects incorporates the technical and input cost uncertainties of pindyck s model 1993 but also considers the fact that the investment costs of some it projects might change even if no investment takes place in contrast to other models in the real options literature in which benefits are summarized in the underlying asset value our model for it acquisition projects represents these benefits as a stream of stochastic cash flows

price level versus inflation targeting abstract this paper shows that price level targeting outperforms inflation targeting in the standard new keynesian model under the assumption that the central bank is forced to operate in an environment characterized by discretion in the benchmark case with no persistence in the shocks the commitment solution can be fully replicated intuitively price level targeting introduces history dependence and a stationary level of prices both of which are prominent features of the commitment solution

a fuzzy design of the willingness to invest in sweden abstract this paper uses a non linear fuzzy logic procedure to empirically investigate the links between the real interest rate and aggregate investments in sweden from 1950 to 1990 the economic environment is characterized by multivalued logic and an indicator for the economy wide investment climate is derived strictly from the interest rate it turns out that the fuzzy logic approach may reveal some empirical regularities that are not recognized by conventional linear regressions

the effect of prison population size on crime rates evidence from prison overcrowding litigation simultaneity between prisoner populations and crime rates makes it difficult to isolate the causal effect of changes in prison populations on crime to break that simultaneity this paper uses prison overcrowding litigation in a state as an instrument for changes in the prison population the resulting elasticities are two to three times greater than those of previous studies a one prisoner reduction is associated with an increase of fifteen index i crimes per year while calculations of the costs of crime are inherently uncertain it appears that the social benefits associated with crime reduction equal or exceed the social costs of incarceration for the marginal prisoner

should the euro area be run as a closed economy the european economic and monetary union emu has created a new economic area larger and closer with respect to the rest of the world area specifi cs hocks are thus more important in emu than country specific shocks used to be in the previous states e g in germany it is thus not surprising that the models used to determine optimal monetary policy in the euro area for instance smets and wouters 2004 assume that this works essentially as a closed economy hit by domestic shocks i e the same assumption made in standard models of u s monetary policy see e g christiano et al 1999 where all shocks are domestic with the only possible exception of energy price shocks this paper studies monetary policy in the euro area looking at the variable most directly related to current and expected monetary policy the yield on long term government bonds we explore how the behaviour of european long term rates has been affected by emu and whether the response of long term rates to monetary policy has got any closer to that consistent with a closed economy we find that the level of long term rates in europe is almost entirely explained by u s shocks and by the systematic response of u s and european variables to these shocks the systematic component of european monetary policy responds to u s variables more than it does to local variables this was true for the bundesbank before emu and remains true for the ecb since the start of emu we also find that unpredictable fluctuations in long term rates are driven by shocks to term premia not to monetary policy this means that the ecb can affect long rates only through the systematic component of its monetary policy which as we have seen mostly responds to u s variables monetary policy shocks induced by the ecb have virtually no effect on long rates claiming that monetary policy in the euro area can be determined as if the region were a closed economy is thus not consistent with the empirical evidence on

flexibility versus commitment mnes ownership strategy in china we investigate the following important questions in international business how do multinational enterprises mnes choose ownership strategies when facing strong uncertainty in foreign market entries how are the choices affected by industry contingencies following the key tenets of real options theory we propose that under a high level of market uncertainty mnes choose more flexible rather than more committed ownership strategies that allow adjustment of investment decisions in future we further suggest that using flexible strategies in response to uncertainty becomes less valuable for mnes when the industry they enter in the host country enjoys strong sales growth potential requires less irreversible investments and has intense competition empirically we analyze the ownership strategies ownership structure and equity share of over 5000 new foreign investments in manufacturing industries in china during 2000 2006 we find qualified support for our hypotheses and discuss the industry boundary conditions of adopting flexible ownership strategies in foreign market entries

does inflation targeting anchor long run inflation expectations evidence from the u s uk and sweden we investigate the extent to which inflation expectations have been more firmly anchored in the united kingdom a country with an explicit inflation target than in the united states a country with no such target using the difference between far ahead forward rates on nominal and inflation indexed bonds as a measure of compensation for expected inflation and inflation risk at long horizons we show that far ahead forward inflation compensation in the u s exhibits substantial volatility especially at low frequencies and displays a highly significant degree of sensitivity to economic news similar patterns are evident in the uk prior to 1997 when the bank of england was not independent but have been strikingly absent since the bank of england gained independence in 1997 our findings are further supported by comparisons of dispersion in longer run inflation expectations of professional forecasters and by evidence from sweden another inflation targeting country with a relatively long history of inflation indexed bonds our results support the view that an explicit and credible inflation target helps to anchor the private sector s views regarding the distribution of long run inflation outcomes jel e31 e52 e58

the optimal inflation rate in new keynesian models should central banks raise their inflation targets in light of the zero lower bound we study the effects of positive steady state inflation in new keynesian models subject to the zero bound on interest rates we derive the utility based welfare loss function taking into account the effects of positive steady state inflation and solve for the optimal level of inflation in the model for plausible calibrations with costly but infrequent episodes at the zero lower bound the optimal inflation rate is low typically less than two percent even after considering a variety of extensions including optimal stabilization policy price indexation endogenous and statedependent price stickiness capital formation model uncertainty and downward nominal wage rigidities on the normative side price level targeting delivers large welfare gains and a very low optimal inflation rate consistent with price stability these results suggest that raising the inflation target is too blunt an instrument to efficiently reduce the severe costs of zero bound episodes

were there regime switches in u s monetary policy working paper 2004 14 june 2004 abstract a multivariate model identifying monetary policy and allowing for simultaneity and regime switching in coefficients and variances is confronted with u s data since 1959 the best fit is with a model that allows time variation in structural disturbance variances only among models that also allow for changes in equation coefficients the best fit is for a model that allows coefficients to change only in the monetary policy rule that model allows switching among three main regimes and one rarely and briefly occurring regime the three main regimes correspond roughly to periods when most observers believe that monetary policy actually differed and the differences in policy behavior are substantively interesting though statistically ill determined the estimates imply monetary targeting was central in the early 80s but was also important sporadically in the 70s the changes in regime were essential neither to the rise in inflation in the 70s nor to its decline in the 80s jel classification e52 e47 c53 key words counterfactuals lucas critique policy rule monetary targeting simultaneity volatility model comparison i the debate over monetary policy change in an influential paper clarida gali and gertler 2000 cgg presented evidence that us monetary policy changed between the 1970 s and the 1980 s indeed that in the 70 s it was drastically worse they found that the policy rule apparently followed in the 70 s was one that when embedded in most stochastic general equilibrium models would imply non uniqueness of the equilibrium and hence vulnerability of the economy to sunspot fluctuations of arbitrarily large size their estimated policy rule for the later period on the other hand eliminated this indeterminacy these results are a possible explanation of the volatile and rising inflation of the 70 s and of its subsequent decline the cgg analysis has two important weaknesses one is that it fails to account for stochastic volatility us macroeconomic variables and particularly the federal funds rate have gone through periods of tranquility and of agitation with forecast error variances varying greatly from period to period ignoring such variation does not lead to inconsistent estimates of model parameters when the forecasting equations themselves are constant but it strongly biases toward a finding of changed parameters tests of the stability of the forecasting equations the other weakness is that the cgg analysis rests on powerful and implausible identifying assumptions they require that we accept that the response of the monetary authority to expected future inflation and output does not depend on the recent history of inflation money growth or output it is hard to understand why this should be so especially in the 70 s when monetarism was a prominent theme in policy debates congress was requiring reports from the fed of projected time paths of monetary aggregates and financial markets were reacting sensitively to weekly money supply numbers the requirement for existence and uniqueness of equilibrium in dynamic models is that the monetary policy rule show a more than unit response of interest rates to the sum of the logs of all nominal variables that appear on the right hand side of the reaction function if we force a particular measure of expected future inflation to proxy for all the nominal variables that actually appear independently in the reaction function we are bound to get distorted conclusions on the one hand because expected future inflation will be a noisy measure of the full set of nominal influences on policy we might get downward bias in our estimates from the usual errorsin variables effect on the other hand to the extent that expected future inflation like most expected future values shows less variation than current nominal variables we could find a mistaken scaling up of coefficients

irreversible investment with price ceilings a model of irreversible investment in a competitive industry under demand uncertainty is developed in the absence of restrictions investment by itself will keep the price from rising above a natural ceiling that exceeds the long run average cost by an option value factor when a lower ceiling is imposed investment is triggered only by the observation of an even higher shadow price as the imposed ceiling is reduced to the long run average cost this shadow price goes to infinity and investment ceases completely because investment is depressed a tighter price ceiling generally leads to a higher long run average price

duration to first job and the return to schooling estimates from a search matching model this paper investigates the properties of the joint distribution of the duration to the first post schooling full time job and of the accepted wage for that job within a search matchingbargaining theoretic model the model provides an interpretation of the observations on duration to first job and accepted wages that differentiates between behavioural influences and market fundamentals in determining the accepted wage schooling relationship the return to schooling is appropriately measured by differences in the wage offer distribution which depends only on market fundamentals we use data from the 1979 youth cohort of the national longitudinal surveys of labor market experience to follow several school leaving cohorts of young males a model which allows for five types of heterogeneous workers within schooling race groups fits the duration and wage data well for all such groups offer probabilities for all groups are estimated to be close to one mean offered wages are about 1000 less than mean accepted wages and the internal annual rate of return for attending college relative to graduating from high school is 32 for blacks and 17 for whites this paper investigates the properties of the joint distribution of the duration to the first post schooling full time job and of the accepted wage for that job within a search matching bargaining model it is a well established empirical regularity that hazard rates are decreasing with the duration of search unemployment it is also true for the data we use that the sample mean of the accepted wage associated with the first job is not increasing with duration these findings hold for both black and white male youth at all levels of schooling conditional on schooling however the time between leaving school and working at the first full time job is longer for blacks and their accepted mean wage is lower conditional on race the time between leaving school and working at the first full time job is shorter for those with higher levels of schooling and their accepted mean wage is higher interestingly blacks display a similar pattern of duration and accepted wages to whites who are one level of schooling below e g black high school graduates and white high school dropouts

an empirical equilibrium search model of the labor market in structural empirical models of labor market search the distribution of wage offers is usually assumed to be exogenous however because in setting their wages profit maximizing firms should consider the reservation wages of job seekers the wage offer distribution is essentially endogenous we investigate whether a proposed equilibrium search model in which the wage offer distribution is endogenous is able to describe observed labor market histories we find that the distributions of job and unemployment spells are consistent with the data and that the qualitative predictions of the model for the wages set by employers are confirmed by wage regressions the model is estimated using panel data on unemployed and employed individuals we distinguish between separate segments of the labor market and we show that productivity heterogeneity is important to obtain an acceptable fit to the data the results are used to estimate the degree of monopsony power of firms further the effects of changes in the mandatory minimum wage are examined

local identification in dsge models abstract the issue of identification arises whenever structural models are estimated lack of identification means that the empirical implications of some model parameters are either undetectable or indistinguishable from the implications of other parameters therefore identifiability must be verified prior to estimation this paper provides a simple method for conducting local identification analysis in linearized dsge models estimated in both full and limited information settings in addition to establishing which parameters are locally identified and which are not researchers can determine whether the identification failures are due to data limitations such as lack of observations for some variables or whether they are intrinsic to the structure of the model the methodology is illustrated using a medium scale dsge model

investment spikes and uncertainty in the petroleum refining industry this paper investigates the effect of uncertainty on the investment decisions of petroleum refineries in the us we construct uncertainty measures from commodity futures market and use data on actual capacity changes to measure investment episodes capacity changes in us refineries occur infrequently and a small number of investment spikes account for a large fraction of the change in industry capacity given the lumpy nature of investment adjustment in this industry we empirically model the investment process using hazard models an increase in uncertainty decreases the probability a refinery adjusts its capacity the results are robust to various investment thresholds our findings lend support to theories that emphasize the role of irreversibility in investment decisions

wage differentials employer size and unemployment the unique equilibrium solution to a game in which a continuum of individual employers choose permanent wage offers and a continuum of workers search by sequentially sampling from the set of offers is characterized wage dispersion is a robust outcome provided that workers search while employed as well as when unemployed the unique nondegenerate equilibrium distribution of wage offers is constructed for three cases 1 identical workers and employers 2 identical employers and an atomless distribution of worker supply prices and 3 identical workers and an atomless distribution of job productivities copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

discounting and divergence of opinion the objective of this paper is to adopt a general equilibrium model and determine the socially efficient discount factor risk free rate and discount rate when there are heterogeneous anticipations about the growth of the economy as well as heterogeneous time preference rates among others we tackle the following questions is the socially efficient discount factor an arithmetic average of the individual subjectively anticipated discount factors more generally can the arrow debreu prices the risk free rates the subjectively expected socially efficient discount factors and discount rates be obtained as an average of the individual subjectively anticipated ones can beliefs dispersion be analyzed as a sort of additional risk or uncertainty leading to possibly lower discount rates is it socially efficient when diversity of opinion is taken into account to reduce the discount rate per year for more distant horizons if so what is the trajectory of the decline

on identification of bayesian dsge models this article is concerned with local identification of individual parameters of dynamic stochastic general equilibrium dsge models estimated by bayesian methods identification is often judged by a comparison of the posterior distribution of a parameter with its prior however these can differ even when the parameter is not identified instead we propose two bayesian indicators of identification the first follows a suggestion by poirier of comparing the posterior density of the parameter of interest with the posterior expectation of its prior conditional on the remaining parameters the second examines the rate at which the posterior precision of the parameter gets updated with the sample size using data simulated at the parameter point of interest for an increasing sequence of sample sizes t for identified parameters the posterior precision increases at rate t for parameters that are either unidentified or are weakly identified the posterior precision may get updated but its rate of update wi

investment uncertainty and liquidity we analyze the dynamic investment decision of a firm subject to an endogenous financing constraint the threat of future funding shortfalls lowers the value of the firm s timing options and encourages acceleration of investment beyond the first best optimal level as well as highlighting another way by which capital market frictions can distort investment behavior this result implies that 1 the sensitivity of investment to cash flow can be greatest for high liquidity firms and 2 greater uncertainty has an ambiguous effect on investment

the impact of the timing of patents on innovation performance abstract in the context of industry standard setting firms face the strategic decision of whether to move faster than competitors or wait for more information that reduces uncertainty these decisions are even more challenging if there are multiple standards and if there are benefits to belonging to more than one standard this paper examines the effect of the timing of patents on a firm s innovation performance the strategic logic of real options posits that patent timing is determined by the tension between the value of preemption and the value of waiting we analyze 680 dvd disc patents in dvd patent pools to test the effect of the timing of patents on innovation performance consistent with real options logic under high uncertainty the later the timing of the patent the higher the innovation performance while under low uncertainty there is an early mover advantage

minimum wage effects on labor market outcomes under search matching and endogenous contact rates building upon a continuous time model of search with nash bargaining in a stationary environment we analyze the effect of changes in minimum wages on labor market outcomes and welfare although minimum wage increases may or may not lead to increases in unemployment in our model they can be welfare improving to labor market participants on both the supply and demand sides of the labor market we discuss identification of the model using current population survey data on accepted wages and unemployment durations and show that by incorporating a limited amount of information from the demand side of the market it is possible to obtain credible and precise estimates of all primitive parameters we show that the optimal minimum wage in 1996 depends critically on whether or not contact rates can be considered to be exogenous and we note that the limited variation in minimum wages makes testing this assumption problematic

monetary policy regime shifts new evidence from time varying interest rate rules i introduction interest rate policies are complex decisions they rely on a multitude of indicators and models and are by nature associated to events not always captured by relatively simple econometric tools nonetheless there is now a widespread consensus that the class of simple policy rules examined by recent microfounded models of the economy generates stabilization properties that are very close to those of optimal feedback rules woodford 2003 feedback rules nowadays are customary tools for monetary policy analysis furthermore rule based policymaking is generally accepted as the reference framework of monetary policy strategies bank of england 1999 european central bank 2004 monetary policy reaction functions summarize the importance that policymakers attach to policy objectives as well as their views on the structure of the economy traditionally those functions are estimated as constant parameters policy rules this is a plausible simplification but a number of reasons suggest that rules should allow for instability and parameter variation over time constant parameter reaction functions might blur the role played by various real world factors 1 model uncertainty 2 conflicting objectives 3 shifting preferences on policymakers choices and 4 nonlinearities in particular reduced form policy models that do not allow for shifts and asymmetries in behavioral relationships could produce misleading results dynamic stochastic general equilibrium dsge models represent one potentially promising way of overcoming these problems this increasingly popular approach is based on microfounded descriptions of the economy recent studies also provide novel techniques to estimate and evaluate linearized dsge models using bayesian methods del negro et al 2007 the bayesian framework represents a natural setup to account for model and parameter uncertainty however the dsge approach imposes a large number of restrictions on the data in the specific context of interest rate rules its ability to generate qualitative and robust assessments on monetary policy conduct appears problematic this article provides some new evidence on interest rate policies in five large economies united states united kingdom germany france and italy through the implementation of a time varying parameters approach tvp henceforth we estimate policy rules as summarized by simple reaction functions defined in terms of expected inflation and output gaps in contrast with most existing analyses we employ a tvp methodology based on the kalman filter algorithm to estimate our instrument rules in practice we allow the policy rules coefficients to vary over time what we obtain are estimates of the state vector for each observation in our sample these estimates can then describe the evolution of monetary policy over time moreover we evaluate the conditional variance of interest rates implied by our tvp methodology a host of factors may cause shifts in the estimated parameters of monetary policy reaction functions some of them may be due to institutional reforms like the introduction of inflation targets or the move to an exchange rate peg or a fixed exchange rate in estimating reaction functions defined in terms of final policy objectives one aims at capturing the relative emphasis placed by policymakers on the attainment of output and inflation targets over time such emphasis might evolve therefore one needs to model the observer s view on the likelihood that these shifts are smooth transitions or abrupt regime changes by allowing the weights of the policy rule to vary only gradually we are able to identify relevant shifts in policy conduct regardless of their exact configuration as argued at length in the next section our approach is better suited than conventional fixed parameter techniques to deal with lucas critique and more in general with the issue of structural change

an intertemporal general equilibrium model of asset prices this paper develops a continuous time general equilibrium model of a simple but complete economy and uses it to examine the behavior of asset prices in this model asset prices and their stochastic properties are determined endogenously one principal result is a partial differential equation which asset prices must satisfy the solution of this equation gives the equilibrium price of any asset in terms of the underlying real variables in the economy in this paper we develop a general equilibrium asset pricing model for use in applied research an important feature of the model is its integration of real and financial markets among other things the model endogenously determines the stochastic process followed by the equilibrium price of any financial asset and shows how this process depends on the underlying real variables the model is fully consistent with rational expectations and maximizing behavior on the part of all agents our framework is general enough to include many of the fundamental forces affecting asset markets yet it is tractable enough to be specialized easily to produce specific testable results furthermore the model can be extended in a number of straightforward ways consequently it is well suited to a wide variety of applications for example in a companion paper cox ingersoll and ross 7 we use the model to develop a theory of the term structure of interest rates many studies have been concerned with various aspects of asset pricing under uncertainty the most relevant to our work are the important papers on intertemporal asset pricing by merton 19 and lucas 16 working in a continuous time framework merton derives a relationship among the equilibrium expected rates of return on assets he shows that when investment opportunities are changing randomly over time this relationship will include effects which have no analogue in a static one period model lucas considers an economy with homogeneous individuals and a single consumption good which is produced by a number of processes the random output of these processes is exogenously determined and perishable assets are defined as claims to all or a part of the output of a process and the equilibrium determines the asset prices our theory draws on some elements of both of these papers like merton we formulate our model in continuous time and make full use of the analytical tractability that this affords the economic structure of our model is somewhat similar to that of lucas however we include both endogenous production and

estimation of equilibrium wage distributions with heterogeneity summary equilibrium search models generalize the one sided models used earlier by endogenizing the wage offer distribution attempts to estimate versions of these equilibrium n search models have been unsuccessful ironically because the predicted wage distribution did not fit the wage data in this paper we extend the applicability of search models by introducing firm heterogeneity to account for the shape of the wage density the resulting estimation problem is difficult but we propose a solution and illustrate its feasibility and performance with a monte carlo study and an application to us labour market data

irreversible investment under interest rate variability some generalizations we study the impact of interest rate and revenue variability on the decision to carry out irreversible investment we provide a mathematical characterization of the two dimensional optimal stopping problem and show that interest rate variability has a decelerating or accelerating impact on investment depending on whether the current interest rate is below or above the long run steady state allowing for interest rate volatility decelerates investment by raising both the required exercise premium of the investment opportunity and the value of waiting finally increased revenue volatility is shown to strengthen the negative impact of interest rate volatility and vice versa

option valuation of claims on real assets the case of offshore petroleum leases this paper extends financial option theory by developing a methodology for the valuation of claims on a real asset an offshore petroleum lease several theoretical and practical problems not present in applying option pricing theory to financial assets are addressed most importantly we show the necessity of combining option pricing techniques with a model of equilibrium in the market for the underlying asset petroleum reserves the advantages of this approach over conventional discounted cash flow techniques are emphasized the methodological development provides important insights for both company behavior and government policy promising empirical results are reported

option value uncertainty and the investment decision the options based approach to studying irreversible investment under uncertainty emphasizes that the opportunity cost of investment includes the value of the option to wait that is extinguished when an investment is undertaken thus the investment decision is affected by the determinants of the value of this option we extend and generalize a standard model of irreversible investment by introducing a second fully reversible technology and also incorporate partial reversibility by allowing capital to be abandoned at a cost as in the existing literature we find that the threshold value of the underlying asset in our case demand at which investment takes place is increasing in the uncertainty of demand we also find that the value of the option and thus the threshold value of the option value multiple at which investment takes place may be either increasing or decreasing in the uncertainty of demand in addition we find that for the case in which capital is used to replace the reversible technology the threshold value of the option value multiple is insensitive to the degree of reversibility of capital

discounting the distant future how much do uncertain rates increase valuations abstract we demonstrate that when the future path of the discount rate is uncertain and highly correlated the distant future should be discounted at significantly lower rates than suggested by the current rate we then use two centuries of us interest rate data to quantify this effect using both random walk and mean reverting models we compute the certainty equivalent rate that summarizes the effect of uncertainty and measures the appropriate forward rate of discount in the future under the random walk model we find that the certainty equivalent rate falls continuously from 4 to 2 after 100 years 1 after 200 years and 0 5 after 300 years at horizons of 400 years the discounted value increases by a factor of over 40 000 relative to conventional discounting applied to climate change mitigation we find that incorporating discount rate uncertainty almost doubles the expected present value of mitigation benefits

regime switches agents beliefs and post world war ii u s macroeconomic dynamics the evolution of inflation and output over the last 50 years is examined through the lens of a micro founded model that allows for changes in the behavior of the federal reserve and in the volatility of structural shocks agents are aware of the possibility of regime changes and their beliefs have an impact on the law of motion underlying the macroeconomy the results support the view that there were regime switches in the conduct of monetary policy however the behavior of the federal reserve is identified by repeated fluctuations between a hawk and a dove regime instead of by the traditional pre and post volcker structure counterfactual simulations show that if agents had anticipated the appointment of an extremely conservative chairman inflation would not have reached the peaks of the late 70s and the inflation output trade off would have been less severe these beliefs counterfactuals are new in the literature finally the paper provides a bayesian algorithm to handle the technical difficulties that arise in a rational expectations model with markov switching regimes

impact of the oil price and fiscal facilities on offshore mining at the dutch continental shelf abstract the surge in the oil price has raised questions about the magnitude of global reserves of oil according to some analysts the current high oil prices indicate a looming decline in the global production of oil others believe however that the increased level of the oil price encourages exploration and production activities bringing the oil price to a lower equilibrium level in the near future in this paper we assess the impact of the unit profit depending on the oil price as well as fiscal facilities on the level of exploration and development drillings in the dutch continental shelf we conducted an econometric analysis of exploration and development drillings in the dutch continental shelf over the period 1981 2003 except a few fiscal changes the regulatory framework for offshore activities in the netherlands the so called small fields policy was unchanged in this period we find that the expected unit profit based on a moving average of the oil price significantly explains the level of both exploration and development drillings in addition the analysis suggests that fiscal facilities have only a temporary effect on exploration activities but are more important for development activities we conclude that the oil price is a major economic incentive for activities of the mining industry

does the volatility of commodity prices reflect macroeconomic uncertainty abstract while there exists numerous studies on the macroeconomic effects of oil and commodity shocks the literature is quite silent on the impact of macroeconomic uncertainty on oil and commodity prices and especially on their volatility this paper tackles this issue through the estimation of a structural threshold vector autoregressive tvar model on a sample of 19 commodity markets we aim at i assessing whether the effect of macroeconomic uncertainty shocks on commodity price returns depends on the degree of uncertainty and ii investigating the transfer from macroeconomic uncertainty to price uncertainty using a newly developed measure of commodity price uncertainty our findings show that both agricultural and industrial markets are highly sensitive to the variability and the level of macroeconomic uncertainty while the impact on precious metals is more parsimonious given their well identified safe haven role in time of economic turmoil in addition we find evidence that the recent 2007 09 recession has generated an unprecedented episode of high uncertainty in numerous commodity prices interestingly our analysis further reveals that volatility and uncertainty in prices can be disconnected this is especially true for the oil market as most important shocks in the 1990s and the beginning of the 2000s that lead to price volatility do not generate price uncertainty highlighting the relevance of our uncertainty measure in linking uncertainty to predictability rather than to volatility

current account adjustment in developing countries the role of exchange rate regimes i introduction an important question in open economy macroeconomics is whether exchange rate rigidity hinders current account adjustment also known as the friedman hypothesis according to friedman 1953 a flexible exchange rate regime facilitates current account adjustment while a fixed exchange rate regime delays the adjustment process this hypothesis has stimulated extensive research on the relationship between exchange rate regimes and current account reversals e g adalat and eichengreen 2007 de haan schokker and tcherneva 2008 milesi feretti and razin 2000 pancaro and rueffer 2009 while existing studies have made significant contributions to the literature they largely focus on the determinants of current account reversals rather than the duration of current account deficit spells emphasized in the friedman hypothesis does a country s exchange rate regime really matter to how long it stays in a high current account deficit state and if so to what extent does the fixed exchange rate regime delay the adjustment process this article addresses the above important questions by empirically evaluating the role of exchange rate regimes on the duration of high current account deficit spells in developing countries given the prevalence of large and persistent current account deficits across countries over the last few decades understanding the impact of exchange rate regimes on the duration of high deficit spells is particularly important and pertinent specifically we identify high current account deficit spells and employ hazard models to examine whether a fixed exchange rate regime increases the duration of high deficit spells and thus delays current account adjustment 1 a novelty of this approach is that by estimating hazard models we can explicitly test for the effect of exchange rate regimes on the duration of high current account deficit spells which is more in the spirit of the friedman hypothesis on the basis of a large dataset with annual observations for 95 developing countries over the period 1971 2004 we find strong evidence that in developing countries fixed exchange rate regimes are associated with longer duration of high deficit spells and hence significant delays in the adjustment to high current account deficits this finding is robust to alternative exchange rate regime classifications and different model specifications furthermore we show that fixed exchange rate regimes delay current account adjustment only in the hard peg case but not in the soft peg case from a policy perspective this suggests that only the corner solution of a very rigid exchange rate regime delays the current account adjustment but not if the regime allows for some flexibility in the exchange rate adjustment our findings thus lend strong support to the friedman hypothesis the remainder of the article proceeds as follows after a brief review of the relevant literature in section ii section iii provides a description of our dataset and defines high deficit spells in section iv we discuss the methodological issues involved in the duration analysis the empirical results are presented in section v and section vi concludes ii the literature on exchange rate regimes and current account adjustment the discussion on the relationship between exchange rate regimes and current account adjustment goes back to friedman s seminal work in the 1950s friedman 1953 argues that nominal exchange rate flexibility expedites current account adjustment while nominal exchange rate rigidity delays the adjustment under a flexible exchange rate system where the exchange rate is allowed to vary freely a rising current account deficit would induce the depreciation of domestic currency which in turn leads to an increase in exports a decrease in imports and a rapid convergence to a balanced current account in the case of fixed exchange rate regimes where exchange rates are not allowed to vary countries have to rely solely on internal price adjustment mechanisms to produce corrective movements in their current accounts

a compound option model of production and intermediate inventories this article extends the option approach to valuing real assets by modeling the firm as a two stage process with bounded output rates in which the output of the first stage may be held as work in process in this setting the real asset becomes a compound option which if exercised gives the option to finish the work in process and sell the output as its final payoff the existence of intermediate inventories may arise as an optimal investment strategy for exploiting possible future price increases the framework allows us to analyze the effect of uncertainty on output rates and the effect of interest rates changes on inventory levels copyright 1993 by university of chicago press

waiting to invest investment and uncertainty the textbook analysis that accepts all projections with positive net present values as positive is quite generally wrong the ability to delay a project means that almost every project competes with itself postponed with uncertain interest rates even the simplest of projects has an option value the effect of interest rate uncertainty on the optimal delay of investment is sizable this implies that the rate of aggregate investment will depend on both the level of the real interest rate and the degree of interest rate uncertainty furthermore it is not necessarily true that investment rises with a fall in interest rates copyright 1992 by university of chicago press

the structural dynamics of output growth and inflation some international evidence we examine the dynamics of output growth and inflation in the us euro area and uk using a structural time varying coefficient var there are important similarities in structural inflation dynamics across countries output growth dynamics differ swings in the magnitude of inflation and output growth volatilities and persistences are accounted for by a combination of three structural shocks changes over time in the structure of the economy are limited and permanent variations largely absent changes in the volatilities of structural shocks matter

market wages and youth crime to study the problem of widespread youth crime i analyze a timeallocation model in which consumers face parametric wages and diminishing marginal returns to crime the theory motivates an econometric model that i estimate using data from the national longitudinal survey of youth my estimates suggest that youth behavior is responsive to price incentives and that falling real wages may have been an important determinant of rising youth crime during the 1970s and 1980s moreover wage differentials explain a substantial component of both the racial differential in criminal participation and the age distribution of crime

a duration model of irreversible oil investment theory and empirical evidence the aim of this paper is to analyse the implications of the theory of irreversible investment under uncertainty for investment in oil fields on the united kingdom continental shelf ukcs we consider the problem of an operator who owns a licence to develop and extract oil from a field of known capacity an intertemporal optimization model in discrete time is developed to derive decision rules for the timing of the irreversible development investment and for the optimal rate of extraction model simulation is then used to describe the properties of the numerical solutions the predictions of the theory on the determinants of the irreversible investment decision are then examined using statistical duration analysis data on the length of the time period between discovery and development are available for individual fields on the ukcs we measure the duration of the irreversible investment gestation lag for each field and test the model by assessing the significance of the theoretical variables in explaining the significance of such a lag both our theoretical model and our empirical results suggest the importance of a nonlinear interaction of the level of oil prices and the volatility of oil prices in determining the development lag the simulation of our theoretical model shows a nonlinear impact of oil price volatility on the trigger level of oil prices our empirical results suggest that the effect of price volatility is a function of the expected price level with increased price volatility having a positive impact on the duration of investment appraisal when expected prices are low and a negative impact when they are high

crime and the labor market a search model with optimal contracts abstract this paper extends the pissarides pissarides christopher a equilibrium unemployment theory cambridge mit 2000 model of the labor market to include crime and punishment a la becker becker gary s crime and punishment an economic approach journal of political economy 76 1968 169 217 all workers irrespective of their labor force status can commit crimes and the employment contract is determined optimally the model is used to study analytically and quantitatively the effects of various labor market and crime policies for instance a more generous unemployment insurance system reduces the crime rate of the unemployed but its effect on the crime rate of the employed depends on job duration and jail sentences when the model is calibrated to u s data the overall effect is to decrease crime but is quantitatively small small wage subsidies reduce unemployment and crime rates of employed and unemployed workers and raise society s welfare hiring subsidies reduce unemployment but they can raise the crime rate of employed workers crime policies police technology and jail sentences affect crime rates significantly but have only negligible effects on the labor market

an empirical assessment of optimal monetary policy in the euro area we estimate a new keynesian dsge model for the euro area under alternative descriptions of monetary policy discretion commitment or a simple rule after allowing for markov switching in policy maker preferences and shock volatilities this reveals that there have been several changes in euro area policy making with a strengthening of the anti inflation stance in the early years of the erm which was then lost around the time of german reunification and only recovered following the turmoil in the erm in 1992 the ecb does not appear to have been any more conservative as aggregate euro area policy was under bundesbank leadership the estimates also suggest that the most appropriate description of policy is that of discretion with no evidence of commitment in the euro area as a result although both good luck and good policy played a role in the moderation of inflation and output volatility in the euro area the welfare gains would have been substantially higher had policy makers been able to commit adopting a flexible price level target would lead to outcomes close to commitment

investment under uncertainty the case of replacement investment decisions we analyze the determinants of replacement investment decisions in a contingent claims model with maintenance and operation cost uncertainty we find that the optimal time between replacements is increasing in the volatility of cost the purchase price of a new asset and the corporate tax rate and is decreasing in the systematic risk of cost the salvage value of the asset and the investment tax credit the optimal time between replacements can either increase or decrease with an increase in the depreciation rate extensions of the model to examine the effects of technological and tax policy uncertainty on replacement investment decisions give intuitive but striking results uncertainty about the arrival of a technological innovation that would decrease maintenance and operation cost results in a significant decrease in replacement investment uncertainty in a tax law change that would encourage investment decreases current investment and uncertainty in a tax law change that would discourage investment increases current investment

small firm investment and financing decisions an option value approach this paper reviews and discusses recent developments undergone by investment theory and tries to address both financial and real decisions within an uncertain environment here the italian economy according to the recent option value approach to investment if differing degrees of reversibility characterize the accumulation process by groups of firms small and larger firms we should expect their investment decisions to differ under uncertainty on the other hand asset reversibility has an influence on firm financing policy given the observed relationship between asset and liability composition assuming a different degree of investment reversibility for small and larger firms we explore how they react to interest rate uncertainty using the italian experience during the 1980s as a benchmark the main result of this paper is that interest rate uncertainty exerts a negative influence on firms investment demand the relationship is stronger for large firms than for small firms another result is that firm leverage also shows a negative relationship with interest rate uncertainty

targeting nominal income growth or inflation within a simple new keynesian model emphasizing forward looking behavior of private agents i evaluate optimal nominal income growth targeting versus optimal inflation targeting when the economy is mainly subject to shocks that do not involve monetary policy trade offs for society inflation targeting is preferable otherwise nominal income growth targeting may be superior because it induces inertial policy making which improves the inflation output gap trade off somewhat paradoxically inflation targeting may be relatively less favorable the more society dislikes inflation and the more persistent are the effects of inflation generating shocks jel e42 e52 f58

understanding the relation between accruals and volatility a real options based investment approach abstract accruals are fundamental to financial reporting and are the underlying innovation of accounting despite this accounting research has provided little understanding of how economic forces affect a firm s level of accruals and limited guidance for forming expectations of accruals based on ex ante firm characteristics we consider accruals as a form of investment and examine whether theoretical predictions from a real options based investment framework provide insight into the relation between accruals and the ex ante expected volatility faced by the firm specifically the theory predicts that higher volatility dampens investment because firms prefer to wait and see instead of investing immediately consistent with this theory we document a robust negative relation between year ahead net working capital accruals and expected volatility we also predict and find that the negative association between year ahead net working capital accruals and expected volatility is less pronounced for distressed firms and more pronounced for firms with a longer operating cycle and that current asset accruals are more sensitive to volatility than current liability accruals finally we find that the residuals from an investment based expected accrual model outperform those from the widely used performance adjusted modified jones model in identifying companies that just meet or beat analysts earnings forecasts collectively our findings suggest that the investment perspective of accruals and in particular the real options based investment framework provide useful insights for forming expectations of accruals

an econometric analysis of exploration and extraction of oil in the u k continental shelf this paper develops an econometric model for the analysis of exploration and production policies of price taking suppliers and derives theoretically consistent exploration and output equations for oil which explicitly take account of the oil discovery process and the intertemporal nature of exploration and production decision the model is then applied to an empirical analysis of oil exploration and extraction on the united kingdom continental shelf ukcs over the period 1978 1 1986 4 the analysis explicitly takes account of the available engineering information concerning the pressure dynamics of the petroleum reserves and the geological knowledge pertinent to the discovery process and presents formal statistical tests of the significance of these factors for the explanation of output and exploration in the north sea copyright 1990 by royal economic society

evaluating natural resource investments notwithstanding impressive advances in the theory of finance over the past 2 decades practical procedures for capital budgeting have evolved only slowly the standard technique which has remained unchanged in essentials since it was originally proposed see dean 1951 bierman and smidt 1960 derives from a simple adaptation of the fisher 1907 model of valuation under certainty under this technique expected cash flows from an investment project are discounted at a rate deemed appropriate to their risk and the resulting present value is compared with the cost of the project this standard textbook technique reflects modern theoretical developments only insofar as estimates of the discount rate may be obtained from crude application of single period asset pricing theory but see brennan 1973 bogue and roll 1974 turnbull 1977 constantinides 1978 the inadequacy of this approach to capital budgeting is widely acknowledged although not widely discussed its obvious deficiency is its the evaluation of mining and other natural resource projects is made particularly difficult by the high degree of uncertainty attaching to output prices it is shown that the techniques of continuous time arbitrage and stochastic control theory may be used not only to value such projects but also to determine the optimal policies for developing managing and abandoning them the approach may be adapted to a wide variety of contexts outside the natural resource sector where uncertainty about future project revenues is a paramount concern

an on the job search model of crime inequality and unemployment we extend simple search models of crime unemployment and inequality to incorporate on the job search this is valuable because although simple models are useful on the job search models are more interesting theoretically and more relevant empirically we characterize the wage distribution unemployment rate and crime rate theoretically and use quantitative methods to illustrate key results for example we find that increasing the unemployment insurance replacement rate from 53 to 65 percent increases unemployment and crime rates from 10 and 2 7 percent to 14 and 5 2 percent we show multiple equilibria arise for some fairly reasonable parameters in one case unemployment can be 6 or 23 percent and crime 0 or 10 percent depending on the equilibrium

speculation in the oil market the run up in oil prices since 2004 coincided with growing investment in commodity markets and increased price co movement among different commodities we assess whether speculation in the oil market played a role in driving this salient empirical pattern we identify oil shocks from a large dataset using a dynamic factor model this method is motivated by the fact that a small scale vector autoregression is not informationally sufficient to identify the shocks the main results are as follows i while global demand shocks account for the largest share of oil price fluctuations speculative shocks are the second most important driver ii the increase in oil prices over the last decade is mainly driven by the strength of global demand however speculation played a significant role in the oil price increase between 2004 and 2008 and its subsequent collapse iii the co movement between oil prices and the prices of other commodities is mainly explained by global demand shocks our results support the view that the recent oil price increase is mainly driven by the strength of global demand but that the financialization process of commodity markets also played a role

the dynamics of investment projects evidence from peru abstract we analyse the effect of commodity price cycles on firm investment decisions at the project level by considering the decision to delay cancel or complete a project as initially announced in particular we use logit and duration models of competing risks on a novel dataset of announced investment projects in peru from different economic sectors the empirical framework for the timing of investment is motivated by real option models for projects that take time to build with commodity prices used as a proxy of expected future income and their volatility as a proxy for uncertainty our results suggest that both a reduction in commodity prices and a reduction in their volatility increase the probability to delay investment in the mining sector this result is in line with a number of real option models with time to build in other sectors delays in implementation occur more often in periods of high volatility probability regressions under a competing risk framework suggest that higher commodity prices lead to a higher probability of completion in all sectors of the economy

equilibrium search with continuous productivity dispersion theory and nonparametric estimation in this article we develop an equilibrium search model with a continuous distribution of firm productivity types within a given labor market we characterize equilibrium derive expressions for the endogenous equilibrium wage distributions and characterize the set of wage distributions that can be generated by the model we develop a structural nonparametric estimation method for the productivity distribution we estimate the model using french longitudinal survey data on labor supply and we compare the results with those from a french panel data set of firms the results are informative on the degree to which firms exploit search frictions

speed limit policies the output gap and optimal monetary policy in a standard new keynesian model a myopic central bank concerned with stabilizing inflation and changes in the output gap will implement a policy under discretion that replicates the optimal timeless perspective precommitment policy by stabilizing output gap changes the central bank imparts inertia into output and inflation that is absent under pure discretion even a fully optimizing i e non myopic central bank operating in a discretionary policy environment achieves better social outcomes if it focuses on inflation and changes in the output gap than are achieved under inflation targeting this abstract was borrowed from another version of this item

wicksellian theory of forest rotation under interest rate variability abstract we apply the wicksellian single rotation framework to cover the unexplored case of variable and stochastic interest rate we provide a mathematical characterization of the two dimensional optimal stopping problem and show in the presence of amenity valuation that increased interest rate volatility lengthens the optimal rotation period and increases the value of the optimal policy by modelling the interest rate as a mean reverting process and forest value as a geometric brownian motion and abstracting from amenity valuation we present an explicit solution for the problem numerical illustrations indicate that interest rate volatility has a significant and non linear impact on optimal rotation

asymmetries in the response of economic activity to oil price increases and decreases abstract it has been common to assume that the relationship between economic activity and oil prices is asymmetric theoretical underpinnings for this asymmetry include costly sectoral reallocation partial equilibrium models of irreversible investment and some version of precautionary savings yet recent studies that use new methodologies to test for asymmetries in u s data have cast some doubts on that premise in this paper we use state of the art techniques to evaluate the presence of asymmetries for a set of oecd countries containing both oil exporters and oil importers we find very little support for the hypothesis that the response of industrial production to oil price increases and decreases is asymmetric our results have important implications for theoretical models of the transmission of oil price shocks they point towards the importance of direct supply and direct demand transmission channels as well as indirect transmission channels that imply a symmetric response

estimating central bank preferences under commitment and discretion this paper explains u s macroeconomic outcomes with an empirical new keynesian model in which monetary policy minimizes the central bank s loss function the presence of expectations in the model forms a well known distinction between two modes of optimization termed commitment and discretion the model is estimated separately under each policy using maximum likelihood over the volcker greenspan bernanke period comparisons of fit reveal that the data favor the specification with discretionary policy estimates of the loss function weights point to an excessive concern for interest rate smoothing in the commitment model but a more balanced concern relative to inflation and output stability in the discretionary model

the investment strategies for a dynamic supply chain under stochastic demands abstract a successful supply chain management scm should aim to maximize the net present value of joint profits along the supply chain however the volatile market conditions cause the future cash flows along the supply chain more difficult to anticipate to obtain higher supply chain value the supplier and the retailer should cooperatively determine the optimal entry time this paper proposes a two stage dynamic optimization model by using a real option approach and then performs the sensitivity analyses for the option value and the investment threshold the impacts of some critical factors including the growth rate and the volatility of demand shock sunk cost and relating operational costs cost rates fix costs holding costs of inventory and shipping costs are investigated

crime inequality and unemployment there is much discussion of the relationships between crime inequality and unemployment we construct a model where all three are endogenous we find that introducing crime into otherwise standard models of labor markets has several interesting implications for example it can lead to wage inequality among homogeneous workers also it can generate multiple equilibria in natural but previously unexplored ways hence two identical neighborhoods can end up with different levels of crime inequality and unemployment we discuss the effects of anti crime policies like changing jail sentences as well as more traditional labor market policies like changing unemployment insurance this abstract was borrowed from another version of this item

estimating central banks preferences from a time varying empirical reaction function abstract we estimate monetary policy reaction functions for the united states the united kingdom and germany using a markov switching model that allows for shifts in the coefficients of the central bank s reaction function as well as for independent shifts in the residual variance the results indicate that central bank policy can be characterized as falling into a low and a high inflation regime over time all central banks have assigned changing weights to inflation and the output gap switching in the residual variance turns out to be important for the fit of the model as a reaction function is a reduced form coefficients embody preference parameters as well as parameters characterizing the structure of the economy to recover the central banks preferences we estimate the preference parameters jointly with a small model of the economy the results show that the bundesbank has placed a relatively higher weight on inflation than the fed moreover for the bundesbank and the fed the differences between both regimes seem to originate mainly from a changing preference for interest rate smoothing

quantifying and sustaining welfare gains from monetary commitment abstract our objectives are to quantify the stabilization welfare gains from commitment to examine how commitment to an optimal rule can be sustained as an equilibrium to find a simple interest rate rule that approximates the optimal commitment one we utilize an empirical micro founded euro area dsge model a quadratic approximation of household utility as the welfare criterion employing a nominal interest rate lower bound in contrast to previous studies we find significant commitment stabilization gains of around a 0 4 0 5 equivalent permanent consumption increase and with higher price stickiness gains over 2 we find that a simple optimized commitment rule responding to inflation and the real wage mimics the optimal one

managerial incentives investment and aggregate implications scale effects we explore a managerial model of investment behaviour in which an incentive problem arises because one input factor managerial effort is not publicly observed we show that an optimal incentive contract leads to investment levels which are below first best in low states and that this phenomenon can account for greater cyclical variability in aggregate production and investment from the perspective of incentive scheme design a special feature of the model is that screening takes place over two variables investment and output rather than one as is customary

licensing duration in foreign markets a real options perspective licensing can be considered an initial trial of a foreign market before a firm fully commits to it through other investment modes the length of trial has great importance because licensing duration represents part of the licensing agreement when it is too short the firm may not acquire the necessary experience and knowledge of the foreign market but if it is too long the firm misses optimal expansion timing arguing that licensing can be considered as a european style real option with a fixed holding period we develop and test a model of the determinants of licensing duration in foreign markets empirical results based on a sample of firms in various countries show that uncertainty and threat of competitive pre emption in the foreign market are related to shorter duration of the technology licensing agreements we also find that irreversibility of the impending investment moderates the relationships between uncertainty and duration specifically market and technology uncertainties in the foreign market induce shorter contracts under low levels of irreversibility

information and the equity premium we determine how better information aects the average equity premium in a standard representative agent exchange economy perfect information obviously eliminates the equity premium and we show that a particular kind of information about the level of future consumption always lowers the average equity premium surprisingly information must sometimes raise the average equity premium no matter what the preferences of the representative agent information purely about the volatility either of consumption or the marginal utility of consumption raises the equity premium for a wide class of preferences moreover information can raise the average equity premium by an arbitrarily large percentage while still matching important magnitudes such as average growth and the risk free rate we consider two dierent economies a two period economy with arbitrary preferences for the representative agent and an infinite horizon economy with standard additive separable ces utility with independent growth rates through time

liquidity risk and occupational choices we explore which financial constraints matter the most in the choice of becoming an entrepreneur we consider a randomly assigned welfare program in rural mexico and show that cash transfers signi cantly increase entry into entrepreneurship we then exploit the cross household variation in the timing of these transfers and find that current occupational choices are significantly more responsive to the transfers expected for the future than to those currently received guided by a simple occupational choice model we argue that the program has promoted entrepreneurship by enhancing the willingness to bear risk as opposed to simply relaxing current liquidity constraints

crime rates and local labor market opportunities in the united states 1979 1997 the labor market prospects of young unskilled men fell dramatically in the 1980s and improved in the 1990s crime rates show a reverse pattern increasing during the 1980s and falling in the 1990s because young unskilled men commit most crime this paper seeks to establish a causal relationship between the two trends previous work on the relationship between labor markets and crime focused mainly on the relationship between the unemployment rate and crime and found inconclusive results in contrast this paper examines the impact of both wages and unemployment on crime and uses instrumental variables to establish causality we conclude that both wages and unemployment are significantly related to crime but that wages played a larger role in the crime trends over the last few decades these results are robust to the inclusion of deterrence variables controls for simultaneity and controlling for individual and family characteristics

using electoral cycles in police hiring to estimate the effect of police on crime comment previous empirical studies have uncovered little evidence that police reduce crime possibly due to simultaneity problems this paper uses the timing of mayoral and gubernatorial elections as an instrumental variable to identify a causal effect of police on crime increases in the size of police forces are shown to be disproportionately concentrated in mayoral and gubernatorial election years increases in police are shown to substantially reduce violent crime but have a smaller impact on property crime the null hypothesis that the marginal social benefit of reduced crime equals the costs of hiring additional police cannot be rejected

holding on for too long an experimental study on inertia in entrepreneurs and non entrepreneurs disinvestment choices abstract disinvestment in the sense of project termination and liquidation of assets including the cession of a venture is an important realm of entrepreneurial decision making this study presents the results of an experimental investigation modeling the choice to disinvest as a dynamic problem of optimal stopping in which the patterns of decisions are analyzed with entrepreneurs and non entrepreneurs our experimental results reject the standard net present value approach as an account of observed behavior instead most individuals seem to understand the value of waiting their choices are weakly related to the disinvestment triggers derived from a formal optimal stopping benchmark consistent with real options reasoning we also observe a pronounced psychological inertia i e most individuals hold on to a losing project for even longer than real options reasoning would predict the study provides evidence for entrepreneurs and non entrepreneurs being quite similar in their behavior

optimal discretionary monetary and fiscal policies in a country size heterogeneous monetary union abstract this paper develops a new keynesian model of a monetary union where atomistic small economies coexist with a large economy it explores how the level of public debt shapes non cooperative discretionary policies it evaluates welfare losses for small and large member countries the paper demonstrates that higher public debt levels hamper business cycle stabilization for the union as a whole and in particular penalize the stabilization performance of small country members while cooperation and monetary leadership is preferable to fiscal leadership for the union as whole and for the small countries the big country prefers fiscal leadership where it explores a larger strategic power vis a vis the common monetary policy authority political support for cooperation may be hard to achieve under low debt levels cooperative stabilization outcomes are relatively similar to the non cooperative ones

discounted utility and present value a close relation we introduce a new type of preference condition for intertemporal choice which requires present values to be independent of various other variables the new conditions are more concise and more transparent than traditional ones they are directly related to applications because present values are widely used tools in intertemporal choice our conditions give more general behavioral axiomatizations which facilitate normative debates and empirical tests of time inconsistencies and related phenomena like other preference conditions our conditions can be tested qualitatively unlike other preference conditions our conditions can also be directly tested quantitatively and we can verify the required independence of present values from predictors in regressions we show how similar types of preference conditions imposing independence conditions between directly observable quantities can be developed for decision contexts other than intertemporal choice and can simplify behavioral axiomatizations there o

optimal simple and implementable monetary and fiscal rules welfare maximizing monetary and fiscal policy rules are studied in a model with sticky prices money and distortionary taxation the ramsey optimal policy is used as a point of comparison the main findings are the size of the inflation coefficient in the interest rate rule plays a minor role for welfare it matters only insofar as it affects the determinacy of equilibrium optimal monetary policy features a muted response to output interest rate rules that feature a positive response to output can lead to significant welfare losses the welfare gains from interest rate smoothing are negligible optimal fiscal policy is passive the optimal monetary and fiscal rule combination attains virtually the same level of welfare as the ramsey optimal policy

political uncertainty and asset valuation evidence from business relocations in canada abstract quebec s drive for sovereignty from canada has been the source of political uncertainty for decades in canada this paper studies empirically stock market s reaction to the announcements of business relocations from the province of quebec to other provinces within canada similar announcements about toronto are used for control empirical results show that the market s reaction to the announcements of business relocations a from quebec is positive b from toronto is negative and c to toronto is positive the difference in abnormal returns between the quebec and toronto samples is positive and significant

the effect of arrests on the employment and earnings of young men many young men commit crime and many are arrested i estimate the effect of arrests on the employment and earnings of arrestees using a large longitudinal data set constructed by merging police records with ui earnings data i find that the effects of arrests are moderate in magnitude and rather short lived

equilibrium with new investment opportunities abstract we develop a general equilibrium model where there are opportunities to abandon existing technologies and adopt new technologies we study how technologies change endogenously in an equilibrium and the effect of technological changes on the equilibrium we find that locally the equilibrium resembles that from cox et al 1985 econometrica 53 363 384 globally the equilibrium can be viewed as the equilibria from cir economies pasted together we also find that while the equilibrium consumption and security price processes are continuous the equilibrium return processes experience jumps at the time of technological changes

the effect of employment frictions on crime this article provides estimates on how long it takes for released inmates to find a job and when they find a job how less likely they are to be incarcerated an on the job search model with crime is used to model criminal behavior derive the estimation method and analyze policies including a job placement program the results show that the unemployed are incarcerated twice as fast as the employed and take on average 6 months to find a job the article demonstrates that reducing the average unemployment spell of previously incarcerated criminals by 3 months reduces crime and recidivism by more than 5

what is wrong with taylor rules using judgment in monetary policy through targeting rules it is argued that inflation targeting is best understood as a commitment to a targeting rule rather than an instrument rule e ither ageneral targeting rule explicit objectives for monetary policy or a specific targeting rule a criterion for the forecasts of the target variables to be fulfilled essentially the equality of the marginal rates of transformation and substitution between the target variables targeting rules allow the use of judgment and extramodel information are more robust and easier to verify than optimal instrument rules and they can nevertheless bring the economy close to the socially optimal equilibrium

capital rationing and organizational slack in capital budgeting this paper reconciles three stylized facts about capital budgeting in firms and shows that they are tied to the presence of asymmetric information among the several members of the firm each with his or her own objectives and decisions the facts of interest are 1 the existence of organizational slack 2 the rationing of resources within organizations 3 the stated cut off rate for accepting capital projects in firms is often greater than the market rate of interest organizational slack is defined as the excess of resources allocated over the minimum necessary to accomplish the tasks assigned resource rationing is defined as the under allocation of resources i e an increase in the amount allocated would generate revenues in excess of its costs rationing and slack are both manifestations of ex post inefficiencies an lp model is used to show that these inefficiencies can occur in ex ante efficient organizational designs when asymmetric information is present the optimal allocation policy involves a hurdle rate criterion in which the hurdle rate is strictly in excess of the cost of capital thus inducing rationing in some states of the world typically resources are optimally allocated such that slack exists in other states the optimal allocation policy trades off these two inefficiencies