cost uncertainty and the rate of investment abstract this paper examines the effect of cost and price uncertainty on the optimal rate of investment by firms within a general equilibrium framework former works which have studied this issue like hartman 1972 and abel 1983 1984 1985 have come to the conclusion that this effect is positive since increased price uncertainty raises expected profitability but these studies assume a fixed discount rate which is equivalent to assuming that consumers are risk neutral this paper shows that if consumers are risk averse the effect of uncertainty may be reversed and investment may be depressed when price or cost uncertainty is increased

the effect of business risk on manufacturing investment sectoral survey evidence from ireland abstract this paper analyses the results of a special sample survey on risk and investment carried out using the european union investment survey sampling frame for ireland the paper looks at decision making by large manufacturing firms located in ireland to see whether their investment decisions can be understood within the various models of risk that economists use equilibrium and disequilibrium models are examined to see what best explains the behaviour revealed by the firms responses the paper develops a categorisation of the main theoretical channels of influence from risk to investment in the light of this theory the survey replies of irish firms are used to assess the importance of the different channels of influence

the influence of uncertainty on uk manufacturing investment this paper reports the results of including proxies for growth and inflation uncertainty in an accelerator style investment equation set up in error correction form for u k manufacturing plant and machinery expenditure the uncertainty proxies are constructed as cross section dispersion indices of independent economic forecasts the results confirm the importance of output growth uncertainty as a negative determinant of capital formation inflation uncertainty was found to have a short run influence only copyright 1991 by royal economic society

decomposing household professional and market forecasts on inflation a dynamic factor model analysis a dynamic factor model with stochastic volatility is used to investigate the relationships between three alternative measures of inflation expectations the results show evidence of both a common time varying trend and a common transitory component between inflation and short term inflation expectations from households professionals and markets while the common time varying trend has declined in both level and volatility since the early 1980s it was found that consumer expectations are disproportionately influenced by the visibility of prices of select few goods roughly speaking a 1 point increase in food and energy prices leads to about 1 3 point increase in consumer forecasts of inflation in terms of policymaking this finding suggests that stability in highly visible prices can moderate inflation in a meaningful way

biased predictors rationality and the evaluation of forecasts abstract optimal rational forecasts are often biased and thus the empirical finding that actual forecasts are biased is not necessarily evidence of irrational behavior using an asymmetric loss function and a regression forecasting problem these points are explicitly demonstrated

inflation expectations in turkey learning to be rational turkey implemented an ambitious restructuring of the economy in the past several years including the adoption of inflation targeting along with a floating exchange rate regime inflation came down from almost triple digits to single digits between 2001 and 2005 this particular episode of the turkish economy sets a genuine case study for investigating the possible changes in the behaviour of inflation expectations upon a regime shift accordingly this study analyses inflation expectations in turkey focusing especially on the post 2001 transition phase we first conduct classical tests of unbiasedness and efficiency using aggregate survey data between august 2001 and october 2007 to get a statistical benchmark for rationality we find that classical tests reject full rationality hypothesis for all series except next month s consumer price index cpi inflation expectations then we carry out time varying parameter tvp estimates based on a kalman filter to see how the coefficients in the classical tes

testing the stochastic structure of production a flexible moment based approach conventional production function specifications are shown to impose restrictions on the probability distribution of output that cannot be tested with the conventional models these restrictions have important implications for firm behavior under uncertainty a flexible representation of a firm s stochastic technology is developed based on the moments of the probability distribution of output these moments are a unique representation of the technology and are functions of inputs large sample estimators are developed for a linear moment model that is sufficiently flexible to test the restrictions implied by conventional production function specifications the flexible moment based approach is applied to milk production data the first three moments of output are statistically significant functions of inputs the cross moment restrictions implied by conventional models are rejected

bias in federal reserve inflation forecasts is the federal reserve irrational or just cautious abstract inflation forecasts of the federal reserve seem to have systematically under predicted inflation from the fourth quarter of 1968 until volcker s appointment as chairman and to systematically over predict it afterwards until the second quarter of 1998 furthermore under quadratic loss commercial forecasts seem to have information not contained in those forecasts to investigate the cause of this apparent irrationality this paper recovers the loss function implied by federal reserve s inflation forecasts the results suggest that the cost of having inflation above an implicit time varying target was larger than the cost of having inflation below it for the period since volcker and that the opposite was true for the pre volcker era once these asymmetries are taken into account the federal reserve s inflation forecasts are found to be rational

rational bias in macroeconomic forecasts do professional forecasters provide their true unbiased estimates or do they behave strategically in our model forecasters have common information confer actively and thus know the true pdf of future outcomes intensive users of economic forecasts monitor forecasters performance closely occasional users are drawn to the forecaster who fared best in the previous period in the resulting nash equilibrium even though economists have identical expectations they make a range of projections that mimics the true probability distribution of the forecast variable those whose wages depend most on publicity produce forecasts that differ most from the consensus empirical evidence supports the model

aggregate uncertainty capacity utilization and manufacturing investment theory suggests that the level of uncertainty affects the investment decision for firms although the sigh of the effect is ambiguous a garch m estimator is used to model the conditional variance of gdp as a proxy for uncertainty this measure is then employed in a simple model of the investment decision the results are that the level of aggregate uncertainty has a significant negative effect on manufacturing investment in particular periods there were very large effects on average uncertainty reduces investment by about 5 but in 1974 the effect peacked at 48

disagreement and biases in inflation expectations empirical work documents substantial disagreement in inflation expectations obtained from survey data furthermore the extent of such disagreement varies systematically over time in a way that reflects the level and variance of current inflation this paper oers a simple explanation for these facts based on asymmetries in the forecasters costs of over and under predicting inflation our model implies biased forecasts with positive serial correlation in forecast errors and a cross sectional dispersion that rises with the level and the variance of the inflation rate it also implies that forecast errors at dierent horizons can be predicted through the spread between the short and long term variance of inflation we find empirically that these patterns are present in inflation forecasts from the survey of professional forecasters a constant bias component not explained by asymmetric loss and rational expectations is required to explain the shift in the sign of the bias observed for a substantial portion of forecasters around 1982

on inflation and inflation uncertainty in the g7 countries abstract the relationship between inflation and inflation uncertainty is investigated in the g7 countries from 1948 to 1993 garch models are used to generate a measure of inflation uncertainty and then granger methods are employed to test the causality between average inflation and inflation uncertainty in all g7 countries inflation significantly raises inflation uncertainty as predicted by friedman and ball weaker evidence is found that inflation uncertainty granger causes inflation in three countries us uk and germany increased inflation uncertainty lowers inflation while in two countries japan and france increased inflation uncertainty raises inflation

the effects on output of money growth and interest rate volatility in the united states in october 1979 the federal reserve began a policy of disinflation and also stopped stabilizing interest rates subsequently interest rates became much more volatile using a methodology advanced by barro this paper estimates what this change in policy did to output in the united states the paper finds that the stagnation of the u s economy since 1979 stemmed almost as much from increased interest rate volatility as from reduced money growth the paper also assesses the extent to which increased volatility of money growth has contributed to stagnation it finds no evidence of any appreciable contribution the paper concludes that stabilizing interest rates is probably sensible monetary policy

the effects of uncertainty and adjustment costs on investment in the almond industry a neoclassical model of investment behavior is developed wherein firms are assumed to maximize the expected present value of net revenue under leontief technology prices and yields are assumed to be stochastic this framework yields investment as a function of the expected present value of the output from one unit of capital and the variance of the expected value this theory is applied to investment in the almond industry the model outperforms both a model without uncertainty and one with neither uncertainty nor adjustment costs using in sample and out of sample tests copyright 1989 by mit press

effects of transparency monetary policy signalling and clarity of central bank communication on disagreement about inflation expectations abstractthe literature on transparency and central bank communication and the literature on disagreement about expectations are evolving however both have been evolving separately despite the advances in the literature several key issues remain open and there are gaps to be filled therefore this study analyses the effects of monetary policy signalling and clarity of central bank communication on disagreement about inflation expectations it also investigates whether greater transparency coincides with lower levels of disagreement in inflation expectations in brazil the findings suggest that transparency is important to reduce disagreement about inflation expectations moreover our estimates indicate that central bank communication and clarity affect disagreement about inflation expectations in brazil

expectations heterogeneous forecast errors and consumption micro evidence from the michigan consumer sentiment surveys the household data underlying the michigan index of consumer sentiment are used to test the rationality of consumer expectations and their usefulness in forecasting expenditure the results can be interpreted as characterizing the shocks that hit different types of households over time expectations are found to be biased and inefficient at least ex post people underestimated the disinflation of the early 1980s and the severity of recent business cycles people s forecast errors are also systematically correlated with their demographic characteristics in part because of time varying group level shocks further sentiment helps forecast consumption growth some of this rejection of the permanent income hypothesis is due to the systematic demographic components in forecast errors

why are professional forecasters biased agency versus behavioral explanations professional forecasters may not simply aim to minimize expected squared forecast errors in models with repeated forecasts the pattern of forecasts reveals valuable information about the forecasters even before the outcome is realized rational forecasters will compromise between minimizing errors and mimicking prediction patterns typical of able forecasters simple models based on this argument imply that forecasts are biased in the direction of forecasts typical of able forecasters our models of strategic bias are rejected empirically as forecasts are biased in directions typical of forecasters with large mean squared forecast errors this observation is consistent with behavioral explanations of forecast bias

long run growth and volatility which source really matters the aim of the article is to analyse the relationship between long run growth and business cycle volatility in particular the main purpose of this article is to identify which source of volatility is most detrimental to growth using cross country data from 1970 to 2000 and several indicators of volatility such as inflation exchange rate government expenditure output and investment volatility this article shows that although all these measures of volatility are remarkably harmful for growth business cycle investment volatility is the main source that hampers long run growth this relation is robust to different measures of business cycle and to different sub samples of countries

disagreement in inflation expectations empirical evidence for colombia the literature on expectation disagreements in emerging economies is scarce this paper examines the disagreements in inflation expectations for the colombian economy during the 2010 2017 period w

what can survey forecasts tell us about information rigidities a lot we derive common and conflicting predictions from models in which agents face information constraints and then assess their validity using surveys of consumers firms central bankers and professional forecasters we document that mean forecasts fail to completely adjust on impact to shocks leading to statistically and economically significant deviations from the null of full information the dynamics of forecast errors after shocks are consistent with the predictions of models with information rigidities the conditional responses of forecast errors and disagreement among agents can also be used to differentiate between some of the most prominent models of information rigidities

firms investment decisions in response to demand and price uncertainty we investigate the effect of demand and price uncertainty on firms planned and realized investment from a panel of manufacturing firms uncertainty measures are derived from firms own expectations about demand and prices and firm s sales we find that demand uncertainty at the time of planning depresses planned and subsequent realized investment firms do not revise their plans due to demand uncertainty at the time of spending suggesting that reducing demand uncertainty will only have lagged effects on investment we do not find any effect of price uncertainty our results are consistent with the behaviour of monopolistic firms with irreversible capital

on the sign of the investment uncertainty relationship understanding the effects of uncertainty over any decision variable has fascinated economists for a long time risk aversion and incomplete markets are likely to make the investment uncertainty relationship negative e g roger craine 1989 joseph zeira 1989 what happens in the absence of risk aversion and incomplete markets is however ambiguous richard hartman 1972 and andrew b abel 1983 1984 1985 found that in the presence of symmetric convex costs of adjustment mean preserving increases in price uncertainty raise investment of a competitive firm as long as the profit function is convex in prices on the other hand the recent literature on irreversible investment e g robert s pindyck 1988 giuseppe bertola 1988 has shown that increases in uncertainty lower investment all these results have been derived under either risk neutrality or complete markets intuition suggests that the explanation for such a difference lies with the asymmetric nature of adjustment costs in the irreversible investment case as compared with the symmetry of the adjustment cost mechanisms proposed by abel and hartman although this intuition is confirmed in this paper asymmetric adjustment costs are shown not to be sufficient to explain why the results differ in fact a more hidden but at least as important difference between these two literatures is that the former assumes perfect competition and constant returns to scale whereas the latter assumes either imperfect competition or decreasing returns to scale or both 2 the purpose of this paper is to highlight the role of the decreasing marginal return to capital assumption due to either imperfect competition or decreasing returns to scale or both in determining the effects of adjustment cost asymmetries on the sign of the response of investment to changes in uncertainty under risk neutrality for this the paper develops a simple model with a cost of adjustment mechanism general enough to consider both symmetric convexity and irreversibility as special cases one of the most important findings is the lack of robustness of the negative relationship between investment and uncertainty under asymmetric adjustment costs3 to changes in the degree of competition in fact when firms are nearly competitive the conclusion of hartman and of abel holds no matter how asymmetric adjustment costs are studying adjustment cost mechanisms has a central role in understanding the dynamics of investment and its business cycle implications but conclusive results about the sign of the instantaneous relationship between uncertainty and investment should not be department of economics columbia university new york ny 10027 i am grateful to giuseppe bertola prajit dutta glen hubbard anil kashyap richard lyons and the referees for their useful comments 1the financial literature on investment has considered risk aversion through a premium in the discount rate determined by the capm capital asset pricing model intertemporal capm or consumption capm however often this discount rate is left unchanged when studying the response of investment to uncertainty changes e g pindyck 1988 pp 974 5 thereby omitting the effect of changes in uncertainty on investment due to risk aversion and incomplete markets 2in the typical version of the irreversible investment problem there is no cost of upward adjustments thus imperfect competition and or decreasing returns to scale are required to bound the size of the firm 3in this paper asymmetric adjustment cost refers to the case in which it is more expensive to adjust downward than upward certainly the opposite case is a trivial extension of the case studied in this paper

biases in macroeconomic forecasts irrationality or asymmetric loss empirical studies using survey data on expectations have frequently observed that forecasts are biased and have concluded that agents are not rational we establish that existing rationality tests are not robust to even small deviations from symmetric loss and hence have little ability to tell whether the forecaster is irrational or the loss function is asymmetric we quantify the exact trade off between forecast inefficiency and asymmetric loss leading to identical outcomes of standard rationality tests and explore new and more general methods for testing forecast rationality jointly with flexible families of loss functions that embed quadratic loss as a special case an empirical application to survey data on forecasts of nominal output growth demonstrates the empirical significance of our results and finds that rejections of rationality may largely have been driven by the assumption of symmetric loss

macroeconomic uncertainty and private investment abstract this paper provides empirical support for a link between macroeconomic uncertainty and private investment in developing countries cross section regressions with constructed measures of uncertainty confirm that for developing countries uncertainty is negatively correlated with private investment

the econometric analysis of models with risk terms summary in this paper we have attempted to provide an integrated approach to the estimation of models with risk terms it was argued that there exist orthogonality conditions between variables in the information set and higher order moments of the unanticipated variable density these could be exploited to provide consistent estimators of the parameters associated with the risk term specifically it was recommended that an iv estimator should be applied with instruments constructed from the information set four existing methods commonly used to estimate models with risk terms are examined and applications of the techniques are made to the estimation of the risk term in the us c exchange market and the effects of price uncertainty upon production

investment in greek manufacturing under irreversibility and uncertainty the message in used capital expenditures this article contributes to the existing literature by showing that uncertainty produces a nonuniform impact to the extent that different types of capital goods exhibit heterogeneous irreversibility which we define as asset specific irreversibility hence asset specific irreversibility is responsible for asymmetries in responses across types of capital goods to uncertainty we also show that for a given type of capital good uncertainty produces a variety of responses across sectors which we define sector specific irreversibility in other words sectoral differences in terms of the ability to substitute a given type of capital with labour introduce a second order effect of uncertainty on investment

tax uncertainty and investment a cross country empirical examination i introduction spanning a period of nearly 100 years of economic research a substantial body of literature has developed with the goal of explaining the behavior of investment over time 1 although many of these studies have considered the implications of tax policy for investment in an uncertain world most have also implicitly assumed that the tax policy itself does not contribute to the uncertainty the problem is that tax policy can be very uncertain in many cases 2 and to date we know little about the consequences especially from an empirical standpoint more generally empirical evaluations of uncertainty and investment are very limited compared with the development of theoretical analyses calcagnini and saltari 2000 and the case of tax uncertainty is no exception this article sets out to fill part of the intellectual void by empirically investigating the impact of volatility in effective tax rates on investment in a cross section of countries namely the 15 countries of the european union eu the united states and japan in doing so i first estimate tax rate volatility using an arch specification with data on effective capital tax rates i then provide panel regression results using the system generalized method of moments gmm sys estimator of arellano and bover 1995 see also blundell and bond 1998 which suggest that the volatility of effective tax rates on capital have a significant negative impact on investment per worker in these countries the remainder of the article proceeds as follows section ii briefly reviews the existing literature on tax policy uncertainty and investment as well as existing empirical studies of uncertainty in general and investment section iii develops the empirical model i employ to estimate the relationship between tax volatility and investment section iv then presents an analysis of effective tax rates in the eu countries the united states and japan followed by a discussion of the data and econometric issues in section v and an examination of the effects of tax rate volatility on investment in section vi section vii provides concluding remarks ii theoretical foundations tax policy uncertainty and investment although most of the voluminous literature on tax policy and investment under uncertainty ignores observed randomness in tax policy a recent set of literature has begun to explore these issues in some detail mostly through simulation 3 the basic premise underlying these studies is that because output price uncertainty tends to retard investment pindyck 1988 4 tax uncertainty might be expected to harm investment as well hassett and metcalf 1999 further credence to a negative relationship between tax uncertainty and investment is given by the business community s mantra that they cannot make plans if they don t have confidence in the tax structure bizer and judd 1989 223 these simulation studies however demonstrate that the impact of tax uncertainty depends crucially on the source and nature of the uncertainty contrary perhaps to conventional wisdom in some cases increased uncertainty can be shown to have positive effects on investment growth or welfare bizer and judd 1989 simulate the economic effects of introducing random tax policy in a dynamic general equilibrium model they find that if random tax rates or credits are serially correlated the target capital stock falls when taxes are high and rises when taxes are low their more interesting case considers independently and identically distributed random tax shocks in this case the authors find that randomness in investment tax credits generates large fluctuations in investment which have the effect of reducing both utility and production because both are concave functions as well revenue 5 they find that variance in future tax rates however is not important for long term investments and in fact raises nontrivial mounts of revenue at a welfare cost that is never more than the cost associated with raising an equivalent amount of revenue with a permanent increase in a deterministic tax rate

the strategy of professional forecasting we develop and compare two theories of professional forecasters strategic behavior the first theory reputational cheap talk posits that forecasters endeavor to convince the market that they are well informed the market evaluates their forecasting talent on the basis of the forecasts and the realized state if the market expects forecasters to report their posterior expectations honestly then forecasts are shaded toward the prior mean with correct market expectations equilibrium forecasts are imprecise but not shaded the second theory posits that forecasters compete in a forecasting contest with pre specified rules in a winner take all contest equilibrium forecasts are excessively differentiated

macroeconomic expectations and time varying heterogeneity evidence from individual survey data the goal of this paper is to investigate forecast heterogeneity and time variability in the formation of expectations using disaggregated monthly survey data on macroeconomic indicators provided by

foreign exchange rate expectations micro survey data this paper analyzes the panel data of biweekly surveys on the yen dollar exchange rate expectations of forty four institutions for two years and contains four major findings first market participants are heterogeneous that is significant individual effects exist in their expectation formation second the individual effects have a characteristic of wishful expectations exporters expect yen depreciation and importers expect yen appreciation relative to others third many violate the rational expectations hypothesis fourth forecasts with long horizons show less yen appreciation than those with short horizons cross equation constraints implied by the consistency of the forecast term structure are strongly rejected in the data copyright 1990 by american economic association

macroeconomic expectations of households and professional forecasters economists have long emphasized the importance of expectations in determining macroeconomic outcomes yet there has been almost no recent effort to model actual empirical expectations data instead m acroeconomists usually simply assume that expectations are rational this paper shows that while empirical household expectations are not rational in the usual sense expectational dynamics are well captured by a model in which households views derive from news reports of the views of professional forecasters which in turn may be rational the model s estimates imply that people only occasionally pay attention to news reports this inattention generates stickyness in aggregate expectations with important macroeconomic consequences

aggregate uncertainty investment and asymmetric adjustment in the uk manufacturing sector theory suggests that the level of uncertainty facing firms should affect both the rate of adjustment to and the steady state level of investment although there is ambiguity about the sign of the effect a non linear model of investment behaviour incorporating time varying adjustment speeds with threshold effects is estimated for the uk manufacturing sector the most general non linear specification is found to be most congruent with the data uncertainty has a large and significant effect on both levels and rates of adjustment

investment and conditional uncertainty the role of market power irreversibility and returns to scale abstract market power irreversibility and returns to scale decisively determine how uncertainty affects investment we empirically show that this relationship is positive when deviations from the neoclassical paradigm are absent as frictions are introduced the positive sign gradually dies out and turns negative

manufacturing stocks expectations risk and co integration the modelling of firms inventory behaviour has been plagued by structural instability and despite a great deal of research effort over recent years little headway has yet been made in producing a structurally stable model of stock levels wallis et al i987 surveyed the main uk models of inventory behaviour and concluded that the tests of predictive failure are particularly powerful when conducted over periods in which data characteristics change and over half the equations we consider are rejected on the basis of their predictive performance in the early i980s this is a surprising result since the poor performance of their predecessors over this period was a prime motivation for the research that has led to the current specifications the similarity in turning points in the forecast errors both for the aggregate stockbuilding equations and for the different categories of stocks suggests the omission of some factor s common to all specifications wallis et al i987 p 144 their analysis was conducted using within sample stability tests and more recent data would undoubtedly find an even higher rejection rate accordingly this paper seeks to identify important omitted components or misspecification in the existing models of inventory behaviour in response to the suggestion in the last sentence of the wallis et al quotation we take as our point of departure a number of recent papers on company sector behaviour which have focused on intertemporal optimisation under rational expectations the seminal work of sargent 1978 on the demand for labour has been followed by a number of studies which seek to treat the firms expectations of future variables in an explicit way this work includes nickell 1 984 and henry and wren lewis i 984 on the labour market and hall et al i986 on the determination of stock levels one common finding amongst these and many other papers is that of a root in the dynamic process under consideration which is close to unity this means that the long run solution for the model is poorly determined and this finding is a cause for some concern recently with the growth of the literature on cointegration see engle and granger 1987 hall i986 this finding takes on an even more serious aspect since a symptom of non cointegration is the lack of a well defined long run solution so the finding of a near unit root may be indicative that earlier researchers were in fact working with sets of variables which failed to cointegrate which would inevitably lead to spurious regression problems in the sense of granger and newbold i 974

a comparison of two methods for estimating income uncertainty with an application to aggregate consumption behaviour econometric theory now provides various techiniques for estimating the variance of a variable for which only a single observation is available at each sample point this paper compares the autoregressive conditional heteroskedastic arch and linear moment lm estimated of the variance of disposable labour income as measures of income uncertainty consumer theory postulates a negative relationship between uncertainty about future income and current consumption using quarterly post world war ii data with income modelled as a random walk with drift both arch and lm estimates of the variance of income are included in a standard specification of the consumption function it is found that while noth the arch and lm estimates of income uncertainty provide essentially the same predicted reduction in consumption growth as uncertainty increases the lm estimates yield a statistically significant influence on consumption while the arch estimated do not however both uncertainty measures provide a statistically

asymmetric preferences and the stability problem for optimal monetary policy rules this paper evaluates the stability properties of optimal monetary policy rules when professionals under adaptive learning have asymmetric preferences the asymmetric preferences require volatility estimates in real time an expectations based rule can stabilize the economy while a fundamentals based rule leads to instability

sources of disagreement in inflation forecasts an international empirical investigation abstract central to the conduct of monetary policy are inflation forecasts inflation forecasts are not unique central banks and professional organizations generate inflation forecasts while households are surveyed about their inflation outlook this paper estimates inflation forecast disagreement for nine economies over the 1999 2009 period five of which target inflation i find that central bank transparency tends to increase forecast disagreement to the extent this reflects the attention paid to inflation performance the implication is that transparency is beneficial moreover this finding does not appear to be a feature that applies only to central banks that must adhere to an inflation target

the political economy of domestic tax reform in bangladesh political settlements informal institutions and the negotiation of reform abstractthis paper explains the persistence of a tax system characterised by low revenue collection and extensive informality in bangladesh it combines analysis of long term formal and informal institutions and of micro level incentives shaping negotiation of short term reform the system is unusually informal discretionary and corrupt but remains resistant to change because it delivers low and predictable tax rates to business extensive opportunities for corruption to the tax administration and an important vehicle for fundraising by political leaders and rent distribution to their elite supporters we then explore the dynamics of micro level reform and external pressure within the constraints of this overarching political bargain

choosing among alternative discrete investment projects under uncertainty abstract irreversible choice among mutually exclusive projects under output price uncertainty is considered increasing returns are shown to make it optimal to wait for the largest project greater uncertainty of the price process makes it optimal to wait for a larger project

private investment trends and determinants in thailand summary this paper examines patterns and determinants of private investment in an attempt to understand why levels of private investment in south east asia have not yet fully recovered using thailand as a case study the private investment equation is estimated during the period 1960 2005 we find that it was capital fund shortages rather than existing spare capacity that hindered short run investment recovery while the health of the financial institutions must be kept in check policy attention should be geared more toward credit availability to ensure that prudent investors can access credit adequately and accelerate investment recovery in the long run policy emphasis should be on promoting a conducive investment climate

estimates of the variance of u s inflation based upon the arch model it is generally agreed that the unpredictability of future inflation is a major component of the welfare loss associated with inflation perfectly predicted inflation might induce some costs through institutional rigidities governmental interference and transaction costs but in the long run these should be rather minimal as these institutions adopt various forms of indexing when inflation is unpredictable risk averse economic agents will incur a loss even if prices and quantities are perfectly flexible in all markets inflation is a measure of the relative price of goods today and goods tomorrow thus uncertainty in tomorrow s price impairs the efficiency of today s allocation decisions friedman in his nobel lecture 8 argues convincingly that higher variability of inflation would lead to decreased output ceteris paribus he then conjectures that higher rates of inflation are generally associated with higher variability of inflation and presumably greater uncertainty about future rates if this is true then higher rates of inflation would also be associated with low levels of output which implies a positively sloped phillips curve this paper uses a new statistical technique arch to estimate the conditional mean and variance of inflation from u s time series data the main finding is that the variance of inflation in the seventies was only slightly greater than in the sixties

is investment time irreversible some empirical evidence for disaggregated uk manufacturing data it has long been suggested that investment may be time irreversible and consideration of the option value of waiting to invest has aroused renewed interest in this issue this study tests for time irreversibility in uk investment according to disaggregation by type of investment expenditure and across manufacturing sector groupings the test results reported indicate that the irreversibility of investment patterns varies not only from industry to industry but also according to the type of capital being purchased with significant time irreversibility detected in gross fixed capital formation and aggregate vehicles expenditure and industrial sector groupings comprising fuels and oil refining engineering and vehicles and textiles and leather however only in the first and last of these series is time irreversibility attributable to non linearities in the underlying data generating process and consistent with threshold effects which may be associated with s s type models of investment dynamics

oil price forecasting under asymmetric loss based on the approach developed by elliott et al 2005 we found that the loss function of a sample of oil price forecasters is asymmetric in the forecast error our findings indicate that the loss oil price forecasters incurred when their forecasts exceeded the price of oil tended to be larger than the loss they incurred when their forecast fell short of the price of oil accounting for the asymmetry of the loss function does not necessarily make forecasts look rational

sticky information and model uncertainty in survey data on inflation expectations abstract this paper compares three reduced form models of heterogeneity in survey inflation expectations on the one hand we specify two models of forecasting inflation based on limited information flows of the type developed in mankiw and reis 2002 sticky information versus sticky prices a proposal to replace the new keynesian phillips curve quarterly journal of economics 117 4 1295 1328 we present maximum likelihood results that suggests a sticky information model with a time varying distribution structure is consistent with the michigan survey of inflation expectations we also compare these sticky information models to the endogenous model uncertainty approach in branch 2004 the theory of rationally heterogeneous expectations evidence from survey data on inflation expectations economic journal 114 497 non parametric evidence suggests that models which allow the degree of heterogeneity to change over time provide a better fit of the data

the effects of japanese interventions on fx forecast heterogeneity we investigate the determinants of forecast heterogeneity in the jpy usd market using panel data from consensus economics we find that past exchange rate volatility increases forecast dispersion while foreign exchange intervention of the japanese ministry of finance dampens expectation heterogeneity

perceived inflation persistence this article constructs and estimates a measure called perceived inflation persistence that can be used to determine if professional forecasters inflation forecasts indicate there has been a change in inflation persistence this measure is built via the implied autocorrelation function that follows from the estimates obtained using a forecaster specific state space model findings indicate that u s perceived inflation persistence has changed since the mid 1990s with more consensus among forecasters at lower levels of persistence when compared to the autocorrelation function for actual inflation forecasters typically react less to shocks to inflation than the actual inflation data would suggest

what do we know about investment under uncertainty recent theoretical developments relating to investment under uncertainty have highlighted the importance of irreversibility for the timing of investment expenditures and their expected returns this has subsequently stimulated a growing empirical literature which examines uncertainty and threshold effects on investment behaviour this paper presents a review of this literature a variety of methods have been used to investigate the empirical implication of irreversibility in investment the majority focusing on the relationship between investment flows and proxy measures of uncertainty a general conclusion is that increased uncertainty at both aggregate and disaggregate levels leads to lower investment rates this suggests that there is an irreversibility effect under which greater uncertainty raises the value of the call option to delay a commitment to investment this effect appears to dominate any positive impact on investment arising from the fact that greater uncertability under certain circumstances increases the marginal profitability of capital the methods used raise a number of issues which call into question the reliability of the findings and these are addressed in the paper however if such irreversibility effects are present then their omission from traditional investment models casts doubt on the efficacy of such specifications jel classification d81 d92 e22

to aggregate pool or neither it is well known that even if all forecasters are rational unbiasedness tests using consensus forecasts are inconsistent because forecasters have private information however if all forecasters face a common realization pooled estimators are also inconsistent in contrast we show that when predictions and realizations are integrated and cointegrated microhomogeneity ensures that consensus and pooled estimators are consistent therefore contrary to claims in the literature in the absence of microhomogeneity pooling is not a solution to the aggregation problem we reject microhomogeneity for a number of forecasts from the survey of professional forecasters therefore for these variables unbiasedness can only be tested at the individual level

the nairu unemployment and monetary policy this paper examines the precision of conventional estimates of the nairu and the role of the nairu and unemployment in forecasting inflation the authors find that although there is a clear empirical phillips relation the nairu is imprecisely estimated forecasts of inflation are insensitive to the nairu and there are other leading indicators of inflation that are at least as good as unemployment this suggests deemphasizing the nairu in public discourse about monetary policy and instead drawing on a richer variety of leading indicators of inflation

estimation and testing of forecast rationality under flexible loss in situations where a sequence of forecasts is observed a common strategy is to examine rationality conditional on a given loss function we examine this from a different perspective supposing that we have a family of loss functions indexed by unknown shape parameters then given the forecasts can we back out the loss function parameters consistent with the forecasts being rational even when we do not observe the underlying forecasting model we establish identification of the parameters of a general class of loss functions that nest popular loss functions as special cases and provide estimation methods and asymptotic distributional results for these parameters this allows us to construct new tests of forecast rationality that allow for asymmetric loss the methods are applied in an empirical analysis of imf and oecd forecasts of budget deficits for the g7 countries we find that allowing for asymmetric loss can significantly change the outcome of empirical tests of forecast rationality