the flow approach to labor markets the flow approach to labor markets builds up from the flows of workers and of jobs it is based on three essential components a specification of labor demand in terms of flows of job creation destruction a process of matching between workers and firms and a process of wage determination where wages depend on the labor market prospects of employed workers and firms we think that this approach gives the right basic picture of unemployment and unemployment dynamics and of the relation between wage movements and the state of the labor market the additional richness it naturally delivers also captures important implications of labor market mechanisms for macroeconomics finally its structure is realistic enough to allow for a productive interaction with and use of micro work and micro evidence in both labor and product markets this paper shows the structure of the approach and some of its implications the first section develops a barebone model the second adds the flesh this abstract was borrowed from another version of this item

estimating the impact of the hajj religion and tolerance in islam s global gathering we estimate the impact on pilgrims of performing the hajj pilgrimage to mecca our method compares successful and unsuccessful applicants in a lottery used by pakistan to allocate hajj visas pilgrim accounts stress that the hajj leads to a feeling of unity with fellow muslims but outsiders have sometimes feared that this could be accompanied by antipathy toward non muslims we find that participation in the hajj increases observance of global islamic practices such as prayer and fasting while decreasing participation in localized practices and beliefs such as the use of amulets and dowry it increases belief in equality and harmony among ethnic groups and islamic sects and leads to more favorable attitudes toward women including greater acceptance of female education and employment increased unity within the islamic world is not accompanied by antipathy toward non muslims instead hajjis show increased belief in peace and in equality and harmony among adherents of different religions the evidence suggests that these changes are likely due to exposure to and interaction with hajjis from around the world rather than to a changed social role of pilgrims upon return

competitive search equilibrium in this paper i construct an equilibrium for markets with frictions which is competitive in the sense that all agents are price takers and maximize utility subject to a set of market parameters i show that the equilibrium allocation is socially optimal i also show how the competitive search equilibrium can be achieved if employers with vacancies can advertise publicly the wages they pay

a model of positive self image in subjective assessments this paper suggests a mechanism that describes individuals positive self image in subjective assessments of their relative abilities the mechanism assumes individuals have heterogeneous production functions that determine ability as a function of multiple skills make skill enhancing investments with the goal of maximizing their ability and make ability comparisons using their own production function within this framework the paper provides conditions under which there is positive self image positive self image is increasing in the ease of the task the number of different skills needed for the task and the variability of production technologies in the population

characterizing some gorman engel curves this paper characterizes all utility derived demand systmes having engel curves that are linear in both income and an arbitrary function of income this class encompasses virtually all utility derived demand systems that have been estimated in the past using ag gregate data with explicit treatment of the problem of aggregation ac ross individuals it includes extensions of the piglog and pigl class es that have similar properties to these classes but allow for more general engel curve shapes this paper extends w m gorman s study o f these forms primarily by characterizing systems of rank two the ap plication of the characterized systems to problems of nesting separa bility flexibility engel curve analysis estimation and aggregatio n are briefly discussed copyright 1987 by the econometric society

quadratic engel curves and consumer demand this paper presents a model of consumer demand that is consistent with the observed expenditure patterns of individual consumers in a long time series of expenditure surveys and is also able to provide a detailed welfare analysis of shifts in relative prices a nonparametric analysis of consumer expenditure patterns suggests that engel curves require quadratic terms in the logarithm of expenditure while popular models of demand such as the translog or the almost ideal demand systems do allow flexible price responses within a theoretically coherent structure they have expenditure share engel curves that are linear in the logarithm of total expenditure we derive the complete class of integrable quadratic logarithmic expenditure share systems a specification from this class is estimated on a large pooled data set of u k households models that fail to account for engel curvature are found ro generate important distortions in the patterns of welfare losses associated with a tax increase

factor complementarity and labour market dynamics abstract we propose and estimate a dynamic stochastic general equilibrium model featuring search and matching frictions deep habits and a ces production function the model successfully replicates the cyclical properties of labour market variables in the us economy for three main reasons first two of the endogenous mechanisms of the model factor complementarity and unemployment benefits play a key role for explaining the amplification in unemployment and vacancies second deep habits have a smaller but significant role as an endogenous mechanism third capital augmenting productivity investment specific and matching efficiency innovations explain large part of the variation in labour market variables

normalized quadratic systems of consumer demand functions empirically estimated demand systems frequently fail to satisfy the appropriate theoretical curvature conditions we propose and estimate two demand systems for which these conditions can be imposed globally the first is derived from a normalized quadratic reciprocal indirect utility function and the second is derived from a normalized quadratic expenditure function the former is flexible if there are no restrictions on its free parameters but loses flexibility if the curvature conditions need to be imposed the latter is flexible in the class of functions satisfying local money metric scaling even if the curvature conditions need to be imposed

church state separation and redistribution we analyze how religion affects voting and redistribution our model directs attention away from the particular faith belief or risk attitudes of religious individuals and emphasizes instead how organized religion opens the door to standard group based distributive politics we argue that organized religion makes it possible for the rich and the religious poor to form electoral coalitions in favor of low taxes and limited redistribution such electoral coalitions form out of simple material self interest and they occur at the expense of the secular poor however the material reward to the religious poor from supporting such electoral coalitions depends on the institutional context as state support for religion increases poor religious voters have greater incentives to vote with poor secular voters in favor of parties that support high taxes the analysis therefore highlights the possibilities of understanding how religion affects politics without asserting that religious individuals differ systematically from secular ones in their values or preferences

incentives in competitive search equilibrium this paper proposes a labor market model with job search frictions where workers have private information on match quality and eort firms use wage contracts to motivate workers in addition wages are also used to attract employees we de ne and characterize competitive search equilibrium in this context and show that it satis es a simple modi ed hosios rule the model is used to address the shimer puzzle related to the low volatility of the unemployment rate relative to the volatility of output observed in the data we nd that private information may increase the responsiveness of the unemployment rate to changes in productivity and in particular to changes in

tax reform and welfare measurement do we need demand system estimation the exact measurement of the welfare costs of tax and price reform requires a detailed knowledge of individual preferences typically first order approximations of welfare costs are calculated avoiding detailed knowledge of substitution effects the authors derive second order approximations which unlike first order approximations require knowledge of the distribution of substitution elasticities this paper asks to what extent simple approximations can be used to measure the welfare costs of tax reform and evaluates the magnitude of the biases for a plausible size tax reform in the authors empirical examples first order approximations display systematic biases second order approximations always work well

the semiflexible almost ideal demand system abstract the concept of a semiflexible functional form is applied to the almost ideal ai demand system this yields a demand model that is more parsimonious than standard ones while preserving a degree of flexibility that satisfies the curvature property of concavity of the underlying expenditure function at least locally and that preserves the desirable properties of the ai model aggregation across consumers and nonlinearity of the engel curves the model is illustrated with an application to a relatively large demand system emphasizing food consumption

flexible and semiflexible consumer demands with quadratic engel curves in this paper we introduce three flexible consumer demand systems in which expenditures on goods are quadratic functions of income we view these alternatives as to the demand systems used heretofore in the empirical modeling of rank three demands namely those in which expenditure shares are quadratic functions of the logarithm of income curvature conditions required by theory can be imposed locally during the estimation for each and a semiflexible version can be estimated for illustrative purposes we estimate various forms of two of the systems using canadian data on seven categories of goods for the period 1947 to 1995

efficiency and labor market dynamics in a model of labor selection this article characterizes efficient labor market allocations in a labor selection model the model s crucial aspect is cross sectional heterogeneity for new job contacts which leads to an endogenous selection threshold for new hires with cross sectional dispersion calibrated to microeconomic data 40 of empirically relevant fluctuations in the job finding rate arise which contrasts with results in an efficient search and matching economy the efficient selection model s results hold in partial and general equilibrium as well as with sequential search abstract from author

heterogeneity job creation and unemployment volatility in this paper i explore the impact of match specific heterogeneity at the job creation margin on business cycle fluctuations i show that this form of heterogeneity alone does not help to amplify labor market volatility either under full or under asymmetric information first i show analytically that under full information heterogeneity has no first order effect on the response of unemployment and job creation to productivity and actually tends to dampen the response of market tightness then in a series of calibrations i show that with both full and asymmetric information the model delivers labor market volatilities close to the representative agent full information benchmark

screening and labor market flows in a model with heterogeneous workers we construct a monetary model in which workers are heterogeneous and productivity is worker specific resulting in time varying deviations between the average productivity of employed and unemployed workers we assume the worker specific component of productivity which we label as the worker s efficiency level is unobservable ex ante by firms and job search is nondirected by interviewing an unemployed worker firms can observe the worker s efficiency level workers with low overall productivity may be interviewed but not hired as firms screen these workers out during the interview process we show that screening amplifies the volatility of the exit rate from unemployment capturing the idea that firms become more selective in a recession reducing the vacancy yield relative to a model with homogeneous levels of efficiency following a negative productivity shock the

the economics of faith using an apocalyptic prophecy to elicit religious beliefs in the field abstract we model religious faith as a demand for beliefs following the logic of the pascalian wager we show how standard experimental interventions linking financial consequences to falsifiable religious statements can elicit and characterize beliefs we implemented this approach with members of a group that expected the end of the world to occur on may 21 2011 by varying monetary prizes payable before and after may 21st to our knowledge this is the first incentivized elicitation of religious beliefs ever conducted the results suggest that the members held extreme sincere beliefs that were unresponsive to experimental manipulations in price

introduction to the economics of religion after a very long hiatus economists have begun again to study the relationship between economics and religion this article seeks to summarize and evaluate the principal themes and empirical findings that have appeared in some 200 recent papers on the economics of religion although some of the research concerns the economic consequences of religiosity most applies standard economic theory to the study of individual religious activity the characteristics of religious groups and the impact of regulation and competition on religious markets

political identity experimental evidence on anti americanism in pakistan we identify pakistani men s willingness to pay to preserve their anti american identity using two experiments imposing clearly specified financial costs on anti american expression with minimal consequential or social considerations in two distinct studies one quarter to one third of subjects forgo payments from the u s government worth around one fifth of a day s wage to avoid an identity threatening choice anonymously checking a box indicating gratitude toward the u s government we find sensitivity to both payment size and anticipated social context when subjects anticipate that rejection will be observable by others rejection falls suggesting that for some social image can outweigh self image

linear and quadratic spline models for consumer demand functions this paper combines flexible functional form techniques which provide local approximations to indirect preferenc es with respect to prices and incomes with spline techniques that provide global approximations with respect to real income the main technical problem is that real income or utility is an unobserved variable starting with the normalized quadratic expenditure functio n linear and quadratic spline models are introduced theoretically and are empirically estimated using japanese consumer data for four goods fo r the years 1970 87 the semi nonparametric literature initiated by a r gallant is reviewed and a limited semi nonparametric property is claimed to hold for the spline models presented in the paper

efficient unemployment insurance this paper constructs a tractable general equilibrium model of search with risk aversion an increase in risk aversion reduces wages unemployment and investment unemployment insurance has the opposite effect insured workers seek high wage jobs with high unemployment risk an economy with risk neutral workers achieves maximal output without any unemployment insurance but an economy with risk averse workers requires a positive level of unemployment insurance to maximize output therefore moderate unemployment insurance not only improves risk sharing but also increases output

confidence enhanced performance there is ample evidence that emotions affect performance positive emotions can improve performance while negative ones may diminish it for example the fears induced by the possibility of failure or of negative evaluations have physiological consequences shaking loss of concentration that may impair performance in sports on stage or at school there is also ample evidence that individuals have distorted recollection of past events and distorted attributions of the causes of successes of failures recollection of good events or successes is typically easier than recollection of bad ones or failures successes tend to be attributed to intrinsic aptitudes or own effort while failures are attributed to bad luck in addition these attributions are often reversed when judging the performance of others the objective of this paper is to incorporate the first phenomenon above into an otherwise standard decision theoretic model and show that in a world where performance depends on emotions biases in information processing enhance welfare

strategic ignorance as a self disciplining device we analyse the decision of an agent with time inconsistent preferences to consume a good that exerts an externality on future welfare the extent of the externality is initially unknown but may be learned via a costless sampling procedure we show that when the agent cannot commit to future consumption and learning decisions incomplete learning may occur on a markov perfect equilibrium path of the resulting intra personal game in such a case each agent s incarnation stops learning for some values of the posterior distribution of beliefs and acts under self restricted information this conduct is interpreted as strategic ignorance all equilibria featuring this property strictly pareto dominate the complete learning equilibrium for any posterior distribution of beliefs

what do we learn about consumer demand patterns from micro data the aim of this paper is to assess the importance of using micro level data in the econometric analysis of consumer demand to do this we utilize a time series of repeated cross sections covering some 4 000 households in each of 15 years employing a number of different aggregation procedures we conclude that aggregate data alone are unlikely to produce reliable estimates of structural price and income coefficients however once certain aggregation factors as well as trend and seasonal components are included an aggregate model is not necessarily outperformed across all demand equations in terms of forecasting ability jel d12 c52 c31 the purpose of this paper is to develop a complete consumer demand system based on a time series of individual household data and to use it to measure the biases introduced into the study of consumer de mand behavior when aggregate data are used in place of the appropriate microeco nomic data we assess the suitability of ag gregate data through the impact on income and price elasticities and by evaluating the ability of both micro and aggregate based models to forecast aggregate consumer de mand the biases introduced by the use of aggregate data depend upon the way that household characteristics interact with in come and price effects and on departures of demand systems from linearity we explore the structure of microeconomic demand sys tems and the role of household characteris tics in the behavior of consumer demand both for the light this may shed on the pattern of future demands and for the im plications this behavior has for issues of aggregation consumer demand patterns typically found in micro data sets vary considerably across households with different household characteristics and with different levels of income we model this variability by making intercept and slope parameters in the budget share equations of our demand sys tem depend on household characteristics and by allowing for nonlinear total log expenditure terms in fact in theory consistent demand systems it is total ex penditure rather than disposable income that is allocated across goods we find that this general framework leads to a well specified data coherent demand system which is a quadratic extension of the popu lar almost ideal model of angus s deaton and john muellbauer 1980 the micro level estimates are shown to be sensitive to the treatment of endogeneity of total expen diture and to the specification of interaction terms with household characteristics in ad dition this specification is also shown to possess many attractive features for the evaluation of aggregate models

employment efficiency and sticky wages evidence from flows in the labor market i consider three views of the labor market in the first wages are flexible and employment follows the principle of bilateral efficiency workers never lose their jobs because of sticky wages in the second wages are sticky and inefficient layoffs do occur in the third wages are also sticky but employment governance is efficient i show that the behavior of flows in the labor market strongly favors the third view in the modern u s economy recessions do not begin with a burst of layoffs unemployment rises because jobs are hard to find not because an unusual number of people are thrown into unemployment

matching models under scrutiny an appraisal of the shimer puzzle abstract two papers have recently questioned the quantitative consistency of the search and matching model shimer has argued that a textbook matching model is unable to explain the cyclical variation of unemployment and vacancies in the us economy costain and reiter have found the existence of a trade off in the model s performance any attempt to change the calibrated values to improve the model s ability to predict the business cycle jeopardizes its predictions of the impact of unemployment benefits on unemployment in surveying the literature originating in these findings i distinguish three different avenues that have been followed to correct the model change in wage formation change in the calibration and changes in the model specification the last approach seems to achieve the best results both from a business cycle and from a microeconomic viewpoint