the effect of ambiguity aversion on insurance and self protection in this article we derive a set of simple conditions such that ambiguity aversion always raises the demand for self insurance and the insurance coverage but decreases the demand for self protection we also characterise the optimal insurance design under ambiguity aversion and exhibit a case in which the straight deductible contract is optimal as in the expected utility model

inventory investment and asymmetric adjustment some evidence for the uk abstract there is now a plethora of non linear time series models of output over the business cycle and considerable empirical evidence that there are key non linear poorly understood mechanisms at work though they account for a small part of the total flow of national income inventories play a disproportionately large role in fluctuations in output it would seem natural to try to determine what role inventories play in the non linear behaviour of the business cycle the first question is are there economic models of firm behaviour suggesting that the movement of inventories over the business cycle is non linear the second issue is whether we can detect such non linearity in the data in this paper we use data on the aggregate behaviour of uk manufacturing but disaggregated according to the stage of fabrication we find that the asymmetric adjustment of inventories varies with the stage of fabrication

the commuting time paradox abstract we examine the conditions for the commuting time paradox which states that the average commuting time does not vary between different periods we develop therefore an equilibrium job search model with endogenously chosen commuting costs presuming wage bargaining between workers and firms the optimally chosen maximum commuting costs jointly maximise the worker s and firm s payoffs we demonstrate that when productivity levels increase over time average commuting costs and average wages both increase which affects the optimally chosen commuting time we establish the conditions under which the paradox holds

money demand in japan and nonlinear cointegration we estimate the long run japanese money demand function in a cointegration framework with two nonlinear functional forms that allow for the liquidity trap and compare the results with the standard log level functional form in addition to the conventional linear cointegration techniques we also use a recently developed procedure for nonlinear cointegration that allows the estimation of alternative functional forms under the same assumption regarding the trend properties of the nominal interest rate the nonlinear functional forms outperform the log level functional form based on out of sample prediction performance

dual labor markets urban unemployment and multicentric cities a two sector model of urban employment is developed which focuses on the formation of a secondary sector in response to a primary sector demand shock the optimal location of this single firm sector is shown to give rise to a multicentric urban spatial structure conditions are then established under which the new labor market equilibrium involves both a decrease in unemployment and an increase in net income for those unemployed these results are extended to a case where all unemployment benefits are financed by local taxation of firms here it is shown that profit incentives may exist for the primary sector to subsidize entry of the secondary sector c 1997 academic press

school board politics school district size and the bargaining power of teachers unions this paper presents a public choice theory of the bargaining power of teachers unions the theory predicts that the power of the unions rises with the size of a district the theory is tested by examining the relationship between district size and various bargaining outcomes for a sample of 771 california school districts in 1999 2000 as hypothesized teachers salaries rise and the ratio of teachers per pupil falls with increasing district size the paper also considers several alternative explanations for these results

intraurban wage gradients evidence by race gender occupational class and sector abstract a general functional form is used to estimate intraurban wage gradients for various groups of workers with 1980 data from the philadelphia detroit and boston metropolitan areas as predicted by the standard monocentric model of urban land use the following results are obtained for most groups of white workers negative and statistically significant wage gradients steeper wage gradients for higher wage earners and an increase in the steepness of wage gradients as the cbd is approached positive wage gradients are not found for black workers despite the fact that suburban employers hire large numbers of these workers who reside within the central city this result is taken as support for the hypothesis that blacks have been disadvantaged by job suburbanization and continued housing market segregation

long run estimates of money demand new evidence from east asian countries and the presence of structural breaks conventionally the money demand function is estimated using a linear regression of the logarithm of money demand on a number of variables in this article we aim to estimate the long run properties of money demand specification for a number of east asian economies and within a panel framework with the presence of structural breaks various country specific coefficients are allowed to capture inter country heterogeneities consistent with theoretical postulates it is found that a the demand for money in the long run positively responds to real income and inversely to the interest rate spread inflation the real effective exchange rate and the us real interest rate b the long run income elasticity is greater than unity and c both the currency substitution and capital mobility hypotheses hold the empirical findings in this article can provide useful policy guidelines to the east asian countries central banks in their quest for price stability if one of the primary objectives of these countries

self selection bias in longitudinal estimation of wage gaps cross sectional regression analyses of wage gaps may be biased by omission of unobserved worker characteristics recent studies therefore have used longitudinal data to difference out the effects of such variables this paper however shows that self selection of job changers may cause longitudinal estimation of wage gaps to be inconsistent

optimal risk allocation for regulated monopolies and consumers abstract the model shows how a regulated monopolist s price should change as random cost and demand parameters are revealed the regulator has a ramsey type problem with a linear tariff a trade off between allocative efficiency and risk sharing typically exists the attitudes of the consumer and the firm to both income and price risk determine how the price should move sufficient conditions are found for price adjustment schemes used in practice to be optimal these schemes include full partial and zero pass through of marginal costs and price caps average cost pricing and caps on total revenue for demand risk

financial constraints and firm post entry performance abstract firms finance production by internally generated funds and external loans the benefits of leverage however come with a cost this cost is related to the uncertainty banks face about the firm s quality and output price as time evolves banks learn about the firm and adjust the terms of the loan contract because of this firms do not have equal access to credit small young firms face greater binding debt constraints than more mature firms with well known prospects the firm survival rate as well as the firm rate of growth are therefore important issues in analyzing firm post entry performance

comparative statics of changes in risk on monotonically and partially responsive kinked payoffs abstract this paper derives two sets of necessary and sufficient conditions on the comparative statics of changes in risk under kinked payoff functions that are monotonically responsive and partially responsive to the realization of risk respectively the former case includes the newsboy problem with backorder the latter case includes the newsboy problem without backorder and under some restrictions also includes the optimal deductible insurance problem some relatively non restrictive conditions derived from the necessary and sufficient conditions reveal that the three problems can be quite different even though they are often viewed in the literature as being congruous these conditions lead to simple predictions of the direction of change in any risk averse agent s optimal choice upon a change in risk without assuming specific functional forms for the utility function

on the endogeneous formation of secondary employment centers in a city a new approach is proposed to explain the formation of secondary employment centers in a monocentric city specifically a large firm considers locating a new plant in a city where none of the existing businesses has a significative share of the labor force so that its location can be viewed as a secondary employment center the choice of this location results from the interplay between the process of competition on both the labor and land markets and the technological externalities generated by the proximity of the city center where other firms are located

job search and unemployment duration implications for the spatial mismatch hypothesis abstract this paper analyzes the relationship between unemployment duration and the spatial distribution of employment it builds on the spatial mismatch literature by analyzing the role of access in a job search framework a unique measure of access is created using municipal level employment growth and a matrix of commuting times for the pittsburgh metropolitan area individuals with more access to employment are found to have shorter unemployment spells the effect of access on unemployment duration is found to be sensitive to the specification of access

wage premia in employment clusters how important is worker heterogeneity this article tests whether the correlation between wages and concentration of employment can be explained by unobserved worker productivity residential location is used as a proxy for unobserved productivity and average commute time to workplace is used to test whether location based productivity differences are compensated away by longer commutes analyses using confidential data from the 2000 decennial census find that estimates of agglomeration wage premia within metropolitan areas are robust to comparisons within residential location and that estimates do not persist after controlling for commuting costs suggesting that the productivity differences across locations are due to location not individual unobservables

commuting patterns and firm decentralization since most employed individuals must travel between home and work on a daily basis work place commuting has provided the point of departure for the monocentric model of residential location alonso 1964 mills 1972 muth 1969 one of the major behavioral assumptions of the monocentric model is that consumers prefer less commuting to more all else equal hence the model predicts that workers will take advantage of any opportunity to reduce their commutes in the monocentric situation in which all employment is located at the central business district cbd no such opportunity arises however decentralized firm location enables workers to shorten their commutes as firms have left the cbd to move into the residential area the monocentric model thus predicts that if firms have decentralized workers should have very short commutes in longrun equilibrium however significant commuting persists in the face of large scale firm decentralization such commuting leads to the belief that frictions with respect to residential and job mobility exist which prevent workers from achieving the long run equilibrium solution predicted by the monocentric model in this paper i hypothesize that individuals with greater job and residential mobility will have shorter commutes given decentralized firm location residential and job mobility are further hypothesized to be functions of socio economic and employment characteristics the results show sex income race household responsibilities and job mobility to be important in determining commuting behavior the monocentric model is based on a separation of the house and work place theoretically this separation can be measured either in terms of commuting time or distance however most tests of the monocentric model have used commuting distance hamilton 1982 blackley and follain 1987 the time vs distance issue is explicitly addressed in this paper by using both measures in the estimations the results

comparative statics predictions for the cross effects of central dominance changes in risk with quasilinear payoffs abstract we examine cross effects for central dominance changes in the random payoff to one activity on the willingness of a risk averter to undertake or expand a second this willingness is enhanced for quasilinear payoffs when activities are cost substitutes

the effect of labor supply and tax rates on intraurban location exist only one paper wales 1978 in killingsworth s 1983 review of labor supply studies explicitly controlled for commuting the key variable in standard models of urban location more recently kohlhase 1986 developed a model of housing demand with endogenous labor supply and alperovich 1985 included income in estimates of distance functions no published empirical paper treats household intraurban location and labor supply as jointly endog

driving to opportunity local rents wages commuting costs and sub metropolitan quality of life we examine variation in local rents wage levels commuting costs household characteristics and amenities within metropolitan areas for 2071 areas covering the united states by density and central city status we demonstrate the sensibility of estimating wage levels by workplace not residence and recover decentralized rent gradients that fall with commuting costs we construct and map a willingness to pay index which indicates the quality of life typical households receive from local amenities when households are similar mobile and informed this index varies considerably within metros and is typically high in areas that are dense suburban sunny mild safe entertaining and have elevated school funding

ambiguity and underwriter decision processes this paper provides empirical evidence that risk and ambiguity affect underwriters decisions on pricing insurance a field study of primary insurance underwriters in a random sample of commercial property and casualty insurance companies reveals that premiums are significantly higher for risks when there is either ambiguity regarding the probability of a particular event occurring and or uncertainty about the magnitude of the resulting loss the paper suggests economic and organizational rationales for this behaviour and offers several explanations as to why insurers in a competitive market can charge higher prices for ambiguous risks which promise to yield excess profits in the long run

third down with a yard to go recursive expected utility and the dixit skeath conundrum abstract in two outcome strictly competitive games equilibrium mixed strategies do not depend on ultimate prizes dixit and skeath games of strategy 1999 norton new york find this counter intuitive we show this invariance comes from reduction not independence and provide conditions for intuitive comparative statics under recursive expected utility

a money demand system for euro area m3 in order to assess the importance of monetary and financial developments for key macroeconomic variables in the euro area a money demand system for m3 is estimated adopting a structural cointegrating var approach while maintaining a good statistical representation of the data long run relationships are based on economic theory by using generalized response profiles the dynamics of the money demand system is investigated without any further identifying assumptions error bounds of the profiles are derived using bootstrap simulations

exchange rate sensitivity of the demand for money in spain 1998 exchange rate sensitivity of the demand for money in spain applied economics vol 30 no 5 pp 607 612

when does extra risk strictly increase an option s value it is well known that risk increases the value of options this article makes that precise in a new way the conventional theorem says that the value of an option does not fall if the underlying asset becomes riskier in the conventional sense of the mean preserving spread this article uses two new definitions of riskier to show that the value of an option strictly increases i if the underlying asset becomes pointwise riskier and ii only if the underlying asset becomes extremum riskier

modeling monetary trends in italy using historical data the demand for broad money 1861 1990 in this paper we estimate a stable demand for money relationship for italy using a long series of historical data we extend previously available data sets to obtain a sample for the years 1861 to 1990 and use cointegration analysis and two stage estimation procedures to obtain a dynamic model for m2 demand by employing a small number of explanatory variables and a nonlinear error correction model we find a stable demand for money relationship our model incorporates significant inflation and interest rate effects in contrast to previous studies of this type

commuting congestion and employment dispersal in cities with mixed land use abstract for centuries cities have been modeled as having centered employment scarce access to which generates land rent this paper first presents some new empirical evidence that in us cities actual employment turns out to be almost as dispersed as residences this range of urban forms is generated with analytic ease in a model that assumes land can have mixed rather than exclusive use at any location the model has firms trading off a central agglomeration force against the lower wages that accompany shorter commuting distances in peripheral locations at one extreme with very high agglomerative forces employment is approximately centered with long commute distances and high congestion levels at the other extreme lower agglomerative forces lead to employment that is completely dispersed commute distances of zero and the absence of congestion maximizing output minus congestion never leads to a pattern of land mixing where employment is fully dispersed a market model however often does if the mix at each location is based on the relative magnitude of the land rent offered from residential as opposed to commercial uses

discounting and growth in a growing economy investing in safe projects raises intergenerational inequalities this deteriorates social welfare because of inequality aversion as expressed by decreasing marginal utility of consumption the social discount rate can be interpreted as the minimum rate of return that is necessary to compensate for the increased inequality generated by the investment for an intuitive precautionary argument this growth effect is reduced if growth is uncertain to complete the picture if the investment raises the collective risk this discount rate should also contain a risk premium recent developments weitzman 1998 2001 2013 gollier 2008 arrow et al 2013 converge toward recommending using a smaller discount rate for safe assets maturing later in this paper i show that this recommendation applied to the risk free rate relies on the assumption that shocks on the growth rate of consumption exhibit some degree of persistence i also show that this implies in parallel an increasing term structure for the risk premium globally the risk adjusted discount rate will have a decreasing term structure only if the asset s beta is small enough

commutes quits and moves abstract this paper analyzes the effects of commuting distance on quit and move propensities in metropolitan areas with conventional wage and housing price gradients most workers ordinarily move in order to lengthen commutes and quit in order to shorten them however quits and moves by workers whose residential choices are constrained by segregation should be relatively insensitive to commutes descriptive statistics and simultaneous probit estimates of move and quit propensities for white and black employees of a single firm confirm these predictions they demonstrate that long commutes encourage white quits and discourage white moves commute increases of one standard deviation would increase white quit propensities and reduce white move propensities by approximately 10 in contrast commutes by black employees have no significant effects on their quit and move propensities

monotonicity of asset price toward higher changes in risk abstract this note gives the conditions on preferences to guarantee the monotonicity of asset prices when the payoffs of the risky asset change in the sense of the n th stochastic dominance and with an n th degree increase in risk those conditions are expressed in terms of the sign of the successive derivatives of the utility function coupled with the relative risk aversion of higher orders less than their benchmark values

on abel s concept of doubt and pessimism abstract in this paper we characterize subjective probability beliefs leading to a higher equilibrium market price of risk we establish that abel s result on the impact of doubt on the risk premium is not correct in general see abel 2002 an exploration of the effects of pessimism and doubt on asset returns journal of economic dynamics and control 26 1075 1092 we introduce on the set of subjective probability beliefs market price of risk dominance concepts and we relate them to well known dominance concepts used for comparative statics in portfolio choice analysis in particular the necessary first order conditions on subjective probability beliefs in order to increase the market price of risk for all nondecreasing utility functions appear as equivalent to the monotone likelihood ratio property

work location residence location and the intraurban wage gradient abstract the monocentric city model implies that work and residence locations are likely to be positively correlated and that wages decline with distance from the city center the first implication has not been explicitly tested before we provide strong support for it in census data for cleveland columbus dayton detroit indianapolis philadelphia and pittsburgh previous wage gradient estimates were hindered by lack of individual data on employment location and worker characteristics we solve this problem by estimating probit models that predict optimal work location and using the results to explain wages we find evidence of significant wage gradients

ethnic ties in trade relationships and the impact on economic performance the case of small scale producers in the handloom sector in ethiopia abstract this article analyses the importance of ethnic ties in trade relationships of small scale producers in the handloom sector in ethiopia using both a non parametric and a parametric statistical method it is shown how various socio economic characteristics of producers lead to ethnic ties with traders it is also shown that ethnic ties affect the performance of producers negatively apparently the positive effect of ethnic ties through the reduction of transaction costs arising from market imperfections does not outweigh the negative effects of closed social networks

where modern macroeconomics went wrong this paper provides a critique of the dsge models that have come to dominate macroeconomics during the past quarter century it argues that at the heart of the failure were the wrong microfoundations which failed to incorporate key aspects of economic behaviour e g incorporating insights from information economics and behavioural economics inadequate modelling of the financial sector meant they were ill suited for predicting or responding to a financial crisis and a reliance on representative agent models meant they were ill suited for analysing either the role of distribution in fluctuations and crises or the consequences of fluctuations on inequality the paper proposes alternative benchmark models that may be more useful both in understanding deep downturns and responding to them

the impact of classes of innovators on technology financial fragility and economic growth in this article we study innovation processes and technological change in an agent based model by including a behavioral switching among heterogeneous innovative firms the model is able to replicate via simulations well known industrial dynamic and growth type stylized facts the main original element of the model is that firms are allowed to endogenously change among three different classes namely single innovators collaborative innovators and imitators moreover our analysis focuses on the impact of these three innovation categories on micro meso and macro aggregates we find that collaborative companies are those having the highest positive impact on the economic system furthermore we have paid particular attention to the role of credit market in promoting smart growth for this purpose we analyze the role of banks as sources of external funds for innovative entrepreneurs our results suggest a trade off between short term profit maximization and long term efficiency which prevents banks to foster investment in r d and technological progress the model is then used to study the effect that different innovation policies have on macroeconomic performance

wages rents and the quality of life this study focuses on the role of wages and rents in allocating workers to locations with various quantities of amenities the theory demonstrates that if the amenity is also productive then the sign of the wage gradient is unclear while the rent gradient is positive the theory is extended to include the housing market and nontraded goods these extensions require little modification of the conclusion the empirical work on wages shows that the regional wage differences can be explained largely by these local attributes with the use of site price data implicit prices are estimated and quality of life rankings for the cities are computed

cross border loss offset can fuel tax competition following recent court rulings cross border loss compensation for multinational firms has become a major policy issue in europe this paper analyzes the effects of introducing a coordinated cross border tax relief in a setting where multinational firms choose the size of a risky investment and host countries non cooperatively choose tax rates we show that coordinated cross border loss compensation may intensify tax competition when following current international practice the parent firm s home country bases the tax rebate for a loss making subsidiary on its own tax rate in equilibrium tax revenue losses may thus be even higher than is implied by the direct effect of the reform in contrast tax competition is mitigated when the home country bases its loss relief on the tax rate in the subsidiary s host country

portfolio choice under noisy asset returns abstract the lack of a clear effect of increases in risk upon the demand for risky assets has led to many restrictions on the types of risk increases and or on consumer preferences in order to obtain unambiguous comparative statics this paper examines the particularly simple yet overlooked case of white noise added to the return distribution it is shown that kimball s standard risk aversion is sufficient for noise to lead to reduced demand for risky assets

defining bad news changes in return distributions that decrease risky asset demand we provide a random variable characterization of the necessary and sufficient conditions for a shift of the distribution of rate of return on the risky asset in the two asset portfolio problem to reduce demand for all strictly risk averse expected utility maximizing investors we also provide random variable characterizations of the shifts that reduce both demand and expected utility for all strictly risk averse investors

investment in risky r d programs in the face of climate uncertainty we analyze how the socially optimal technology rd and that uncertainty in damages interacts with uncertainty in the returns to rd and r d that reduces the emissions to output ratio and argue that this is a good representation of r d into fossil fuel technologies for r d programs into non carbon technologies optimal investment is higher in riskier programs our empirical model indicates that the optimal investment in a risky program is about 3 1 2 times larger than in a program with certain returns for r d programs aimed at reducing emissions in fossil fuel based technologies our results show that qualitatively investment is higher in less risky programs under most uncertain damage scenarios our empirical model shows however that the risk profile of fossil fuel based r d programs generally has little quantitative impact on optimal investment the exception is that when the probability of a catastrophe inducing full abatement is very high investment is about twice as high in risky programs compared to programs with certain returns

the property liability insurance cycle a comparison of alternative models the objective of this paper is to compare alternative models of insurance pricing as theories of the property liability underwriting cycle the existing literature has focused on comparing two models the financial pricing and capacity constraint models however these are not the only relevant models we show that six alternative models imply the same general form of the pricing equation we apply the model to data on stock property liability insurers for the period 1935 1997 we find that the actuarial model and the capacity constraint hypothesis are the only theoretical models that are consistent with the data

decreasing aversion under ambiguity abstract under which condition does the set of desirable uncertain prospects expand when wealth increases we show that the decreasing concavity dc of the utility function u is necessary and sufficient in the maxmin expected utility model in the smooth ambiguity aversion model with the ambiguity valuation function the dc of u and of u is necessary and sufficient an alternative classical definition of decreasing aversion is based on the hypothesis that the investment in a risky asset is increasing in wealth we show that this hypothesis does not hold in general under ambiguity aversion and that one needs to constrain the structure of ambiguity to obtain unambiguous results

an empirical investigation of intraurban wage gradients abstract intraurban wage gradients have received little attention in the urban literature but have been shown theoretically to be important indicators of the spatial characteristics of urban economic activity this study examines the spatial distribution of wages of five groups of municipal public employees in the chicago smsa negative wage gradients significant at the 0 05 level are found for four of the five labor groups results show that monthly wages decrease on average as much as 24 per additional mile from the city center

portfolio choices and asset prices the comparative statics of ambiguity aversion we investigate the comparative statics of more ambiguity aversion as defined by klibanoff marinacci and mukerji 2005 in the context of the static two asset portfolio problem it is not true in general that more ambiguity aversion reduces the demand for the uncertain asset we exhibit some sufficient conditions to guarantee that ceteris paribus an increase in ambiguity aversion reduces the demand for the ambiguous asset and raises the equity premium for example this is the case when the set of plausible distributions of returns can be ranked according to the monotone likelihood ratio order we also show how ambiguity aversion distorts the price kernel in the alternative portfolio problem with complete markets for contingent claims

car ownership and the labor market of ethnic minorities we show how initial wealth differences between low skilled minorities and white workers can generate differences in their labor market outcomes this even occurs in the absence of a taste for discrimination against ethnic minorities or exogenous differences in distance to jobs because of the initial wealth difference minorities cannot afford to buy a car while whites can car ownership allows whites to reach more jobs per unit of time which gives them a better bargaining position in the labor market as a result in equilibrium ethnic minorities end up with both higher unemployment rates and lower wages than whites furthermore we also show that it takes more time for minorities to reach their jobs even though they travel less miles when employed those predictions are consistent with the data better access to capital markets or better public transportation will reduce the differences in labor market outcomes

why women work closer to home this paper analyzes the extent to which differences in labor force status in household composition and in household roles account for sex differences in workplace residence separation modelling work trip length as the outcome of the choice of household residential and individual job locations equilibrium work trip length is estimated empirically as a function of labor market housing and household characteristics for male and female employees in seven different household categories data from the 1976 panel survey of income dynamics are used the study concludes that while sex differences in job tenure work hours and wages are in themselves sufficient to fully account for observed sex differences in workplace residence separation sex differences in household roles i e responses to spouses characteristics are of even greater importance in influencing women to work closer to home

a new look at the determinants of the intrametropolitan distribution of population and employment in this paper we develop an econometric model that relates intra urban employment and population distributions to a variety of explanatory factors the geographical focus is on the united states the results suggest that housing costs and quality are the most important determinants of the population distribution which is the most important determinant of the employment distribution however causation between population and employment runs both ways excerpt

a stable demand for money despite financial crisis the case of venezuela the demand for broad money in venezuela is investigated over a period of financial crisis and substantial exchange rate fluctuations the analysis shows that there exist a long run relationship between real money real income inflation the exchange rate and an interest rate differential that remains stable over major policy changes and large shocks the long run properties emphasize that both inflation and exchange rate depreciations have negative effects on real money demand whereas a higher interest rate differential has positive effects the long run relationship is finally embedded in a dynamic equilibrium correction model with constant parameters these results have implications for a policy maker in particular they emphasize that with a high degree of currency substitution in venezuela monetary aggregates will be very sensitive to changes in the economic environment

optimal choice and beliefs with ex ante savoring and ex post disappointment we propose a new decision criterion under risk in which individuals extract both utility from anticipatory feelings ex ante and disutility from disappointment ex post the decision maker chooses his degree of optimism given that more optimism raises both the utility of ex ante feelings and the risk of disappointment ex post we characterize the optimal beliefs and the preferences under risk generated by this mental process and apply this criterion to a simple portfolio choice insurance problem we show that these preferences are compatible with first degree and second degree stochastic dominance and yield a preference for early resolution of uncertainty furthermore they are consistent with observed violations of the independence axiom such as the preference reversal in the allais paradox and predict that the decision maker takes on less risk compared to an expected utility maximizer our decision criterion can thus help explain the equity premium puzzle and the preference for low deductibles in insurance contracts

capital and risk in property liability insurance markets abstract this paper investigates the capital and portfolio risk decisions of property liability insurance firms a theoretical model based on option pricing theory is developed which predicts a positive relationship between insurer capital and risk as firms balance these two factors to achieve their desired overall insolvency risk the implications of the model are then tested empirically using a simultaneous equations methodology the results support the predictions of the model they also provide evidence that managerial incentives play a role in determining capital and risk in insurance markets the findings have significant implications for insurance solvency regulation

mean variance preferences and investor behaviour we study the comparative statics implications of mean variance preferences for optimal portfolios specifically we show that all risk averse mean variance investors raise their investment in a risky asset in response to a change in that asset s return distribution if and only if the change lowers both the mean and standard deviation of the return by the same percentage besides being of interest in its own right our results allow us to compare some comparative statics implications and the expected utility and mean variance models systematically

the spatial mismatch hypothesis what has the evidence shown this paper reviews 20 years worth of empirical evidence on the spatial mismatch hypothesis after briefly surveying the relevant models from urban and labour economics and recent trends in employment and population suburbanisation the empirical evidence on spatial effects is examined this literature includes evidence on the effects of residential segregation residential suburbanisation and employment suburbanisation and direct measures of access such as travel times the most recent evidence suggests that spatial mismatch is relevant for explaining black white employment differences though the magnitudes of these effects remain unclear

testing for the stability of money demand in italy has the euro influenced the monetary transmission mechanism stability of money demand is a crucial issue for the efficacy of monetary policy this is particularly true in the presence of significant exogenous shocks to the monetary system by implementing the most recent econometric testing procedures this article intends to investigate the consistency of the stability of money demand in italy one of the larger european monetary union emu countries before and after the emu among others the objective is indeed to ascertain the effect of a change in the currency regime on the monetary aggregates and to provide a valid empirical model which is a viable tool for policy performance

the substitution between moves and quits if a worker s workplace and residence locations do not maximize utility quits and moves are substitutes a quit or a move alone is more likely than both together records of a single company confirm this simultaneous bivariate probit estimates of move and quit behavior demonstrate that uncontrolled shocks to quits and moves are negatively correlated furthermore when the company relocated from the central business district to a suburb of its metropolitan area the occurrence of either a quit or a move virtually precluded the occurrence of the other among employees whose journeys to work were lengthened by the relocation copyright 1991 by royal economic society

the comparative statics of changes in risk revisited abstract in this paper we consider the problem of determining the conditions under which a change in risk increases the optimal value of a decision variable for all risk averse agents for a large class of payoff functions we obtain the least constraining necessary and sufficient condition on the change in risk for signing its effect without any additional restriction on the utility function than risk aversion it entails all existing sufficient conditions as particular cases our results are applied to the linear model which describes the standard portfolio problem the necessary and sufficient condition for unambiguous comparative statics in this class of problems is termed greater central riskiness cr it is shown that cr dominance is neither stronger nor weaker than second degree stochastic dominance journal of economic literature classification number d81

on interdependent supergames multimarket contact concavity and collusion abstract following bernheim and whinston 1990 this paper addresses the effects of multimarket contact on firms ability to collude real world imperfections tend to make firms objective function strictly concave and market supergames interdependent firms payoffs in each market depend on how they are doing in others then multimarket contact always facilitates collusion it may even make collusion sustainable in all markets when otherwise it would not be sustainable in any the effects of conglomeration are discussed multigame contact is shown to facilitate cooperation in supergames other than oligopolies as long as agents objective function is submodular in material payoffs journal of economic literature classification numbers c72 d43 l13 l21

price and hedging policy the case of an intertemporarily risk averse bank abstract in a two period framework we analyze the behavior of a maturity transforming intertemporarily risk averse bank in the presence of a stochastic inter bank rate and futures markets we show that the separation property holds but that loan and deposit price decisions show non linear dependence

stochastic volatility implies fourth degree risk dominance applications to asset pricing abstract what is the contribution of stochastic volatility to the resolution of asset pricing puzzles i demonstrate that increasing the risk surrounding the variance of future consumption does not change its unconditional variance but it generates a fourth degree risk deterioration in future consumption yielding in particular an increase in its excess kurtosis if shocks to the volatility of consumption growth are persistent the term structure of annualized excess kurtosis is increasing in a lucas economy with a eu representative agent this increases the aggregate risk premium if and only if the fourth derivative of the utility function u is negative and it makes its term structure increasing persistent stochastic volatility also reduces the interest rate if and only if the fifth derivative of u is positive and it makes its term structure decreasing these conditions are satisfied under constant relative risk aversion and these results are robust to epstein zin preferences we show that persistent stochastic volatility is supported by the evidence that the excess kurtosis of consumption growth is positive and has an increasing term structure using quarterly growth data in the u s between 1947 and 2016

intra urban wage variation employment location and commuting times abstract theory predicts that within a metropolitan area employers located where there is difficult commuting will have to compensate their workers with appropriately higher wages this should hold whether one is comparing central city work locations with those at the fringe or simply differences between suburban edge cities in the longer run if employers are concerned primarily with labor costs firm mobility should equalize wages or else agglomeration economies must exist to sustain the differences using microdata from the 1990 census for 2 large metropolitan areas in the u s wage equations are estimated for urban workers allowing for different wage levels depending on zone of employment the results show that observationally equivalent workers have wages that vary substantially across employment zones within a metro area and that this variation is strongly and significantly correlated with the average commute time of the workers employed in that zone these results hold across several different econometric specifications wages and average travel times also are found to be highly correlated with the aggregate number of workers in each zone but are not affected by zone employment specialization thus there is inconclusive evidence as to whether wage commuting cost differences result from equilibrium agglomeration effects or from a disequilibrium distribution of employment

cointegration tests of a long run relation between money demand and the effective exchange rate abstract for the period starting with the floating of the us dollar we find evidence that long run stationarity of the demand function for m2 but not m1 requires inclusion of the effective exchange rate these results lend some support to mckinnon s hypothesis that nonstationarity in the demand for money can be resolved by inclusion of the exchange rate jel f41 e41

search in cities the aim of this paper is to expose the recent developments of urban search models which incorporate a land market into a search matching framework using these models we will be able to explain why unemployment rates vary within a city how city structure affects workers labor market outcomes how unemployment benefits and the job destruction rate affect the growth of cities and why workers living far away from job centers search less intensively and experience higher unemployment rates than those residing closer to jobs we are also able to explain why as compared to whites black workers spend more time commuting to work but travel less miles and search for jobs over a smaller area

substitution and income effects for increases in risk abstract comparative statics effects for rothschild stiglitz increases in risk can be decomposed into substitution and income effects associated with diamond stiglitz compensated increases in risk and first degree deterministic transformations providing an avenue for understanding conflicting responses to increases in risk

monotone comparative statics under uncertainty this paper analyzes monotone comparative statics predictions in several classes of stochastic optimization problems the main results characterize necessary and sufficient conditions for comparative statics predictions to hold based on properties of primitive functions that is utility functions and probability distributions the results apply when the primitives satisfy one of the following two properties i a single crossing property which arises in applications such as portfolio investment problems and auctions or ii log supermodularity which arises in the analysis of demand functions affiliated random variables stochastic orders and orders over risk aversion

the no loss offset provision and the attitude towards risk of a risk neutral firm abstract this paper examines how discrete tax brackets induce an otherwise risk neutral firm to behave in a very specific risk averse manner we show how the firm s investment decisions relate to various factors such as other firm revenue tax rates tax exemption levels and project risk in particular such a firm is shown to exhibit first order risk aversion with a possible zero demand for a risky investment even when the expected excess return is positive firm behavior displays risk aversion that is in some sense increasing in firm profits at low profit levels and decreasing at high profit levels

exchange rate sensitivity of demand for money and effectiveness of fiscal and monetary policies one of the arguments between proponents and opponents of floating exchange rates centres around the relative effectiveness of fiscal and monetary policy while proponents of floating rates argue that monetary policy is more effective under floating rates its opponents contend that fiscal policy is more effective under fixed rates however economic theory suggests that there is room for both policies under both types of exchange rate system depending upon degree of sterlization concentrating on the floating rates mundell 1963 has argued that the relative effectiveness of monetary and fiscal policies would also depend upon sensitivity of money demand to exchange rate more precisely he has conjectured that the demand for money is likely to depend upon the exchange rate in addition to the interest rate and the level of income this would slightly reduce the effectiveness of a given change in the quantity of money and slightly increase the effectiveness of fiscal policy on income and employment under

risk propensity and firm performance a study of the petroleum exploration industry this paper explores the differences in observed risk propensity among petroleum firms and their impact on firm performance in this work we 1 develop a decision theoretic model which measures a firm s risk propensity in the form of an implied utility function 2 investigate changes in corporate risk propensity with respect to changes in firm size and 3 examine the relationships between firms risk propensities and alternative dimensions of economic performance including ex post risk and return measures we also develop a new risk propensity measure the risk tolerance ratio rtr which controls for firm size and allows firms to be differentiated in terms of relative risk propensity the motivation for this work is managerial concerns regarding appropriate risk taking behavior and the effect of risky choice on firm performance this methodology has importance business strategy implications in that we are able to make strong inferences about causal relationships between ex ante risk taking and performance our findings are compelling in that corporate risk propensity seems to matter and that decisions about corporate risk policy have a significant impact on the petroleum firm s economic performance

asymmetric information and the new theory of the firm financial constraints and risk behavior this paper summarizes recent developments in the theory of the firm that have arisen in examining the implications of imperfect information it shows that a wide range of these models have similar implications for the likely reaction of firms to external environmental and policy changes two significant implications are 1 that firms behave as if they are risk averse individuals maximizing a utility function of terminal wealth profitability even when the risks involved are unsystematic and 2 in many circumstances because this utility function is likely to be characterized by decreasing absolute risk aversion firms are likely to respond significantly and positively to changes in cash flow and profitability together these two phenomena are able to account for a wide range of firm behaviors that have been empirically observed both formally and informally and that are difficult to explain in terms of the traditional theory of the firm furthermore the responses of such firms to policy interventions are likely to differ significantly from those of neoclassical firms this abstract was borrowed from another version of this item

portfolio choice in personal equilibrium abstract this paper finds that in portfolio choice where reference point arises endogenously in personal equilibria investors behave as if they had a concave probability weighting function this finding establishes a link between the reference dependent utility and the rank dependent utility theories

risk aversion and willingness to pay for energy efficient systems in rental apartments abstract this paper uses a random utility model to estimate consumers valuation of energy efficient insulation and ventilation systems in rental apartments given consumers limited experience in residential buildings and the perceived uncertainty about their comfort benefits and resulting energy savings these relatively new technologies might be undervalued by risk averse consumers using the concept of certainty equivalence this paper proposes a model to assess the consumers risk aversion for adopting energy efficient systems these systems are treated as risky assets while conventional commodities are assumed to be risk free the curvature of the utility function is interpreted as a measure of aversion to perceived risks as opposed to explicit risks measured by observed variances the proposed formulation is applicable in stated preference data with qualitative variables the model is applied to data from a choice experiment conducted among 264 apartment tenants in switzerland the estimated curvatures reject the risk neutrality hypothesis the range of the estimated risk premiums suggests that risk considerations remain a central issue in dealing with energy efficiency in residential buildings the analysis also indicates that assuming same risk attitudes toward new and conventional systems could bias the estimates of the willingness to pay especially when the system is comprised of several components

a note on portfolio dominance dominated if it reduces the demand for the risky asset by all risk averse agents irrespective of the risk fiee rate we show that the condition obtained by landsberger and meilijson 1993 while necessary is not sufficient for portfolio dominance and we present an exact necessary and sufficient condition