house price dynamics with dispersed information abstract we use a user cost model to study how dispersed information affects the equilibrium house price in the model agents are disparately informed about local economic conditions consume housing services and speculate on price changes optimists who expect high house price growth buy in anticipation of capital gains pessimists who expect capital losses prefer to rent because of short selling constraints on housing pessimistic expectations are not incorporated in the price of owned houses and the equilibrium price is higher and more volatile relative to the benchmark case of common information we present evidence supporting the model s predictions in a panel of us cities

price distortions in agriculture and their effects an international comparison the central thesis of this paper is that agricultural pricing policies pursued by developing countries produce effects which are diametrically opposite to those produced by the pricing policies of many developed countries and that the policies of both are costly in terms of global welfare in general the agricultural sector in developing countries is heavily taxed while that in the developed countries receives substantial price protection the effects of agricultural price distortions on output consumption trade and rural employment are estimated for nine countries in addition the effects of price distortions on the distribution of income between producers and consumers on government revenue and foreign exchange and the net social losses of the policies are calculated the results indicate that there are large income transfers and impacts on migration from the rural to the urban sector in developing countries and from the urban to the rural sector in developed economies

u s metropolitan house price dynamics abstract using data for 70 u s metropolitan areas this study explores spatial heterogeneity in house price dynamics we use recent advances in panel econometrics that allow for spatial heterogeneity cross sectional dependence and non stationary but cointegrated data we test for spatial differences and analyze the relationship between the price elasticity of housing supply and the income elasticity of prices as well as bubble size and duration the long term elasticity of house prices with respect to aggregate personal income averages 0 81 but varies considerably across metropolitan areas the long term income elasticity generally is greater in the more supply inelastic metropolitan areas and we show that bubble size and duration are inversely related to supply elasticity also short term momentum and reversion dynamics show substantial spatial heterogeneity

smallholder dairying under transactions costs in east africa abstract it is argued that dairying is vital to future viability of many small farms in east africa and that high transactions costs for dairy production and marketing limit participation by asset and information poor smallholders case studies from kenya and ethiopia illustrate the role of dairy cooperatives in reducing transactions costs analysis of the determinants of producer prices received by a sample of dairy producers near addis ababa suggests that different levels of access to infrastructure assets and information explain why they contemporaneously accept widely different producer prices for fluid milk

skills in the city this paper documents the allocation of skills across cities and estimates the impact of agglomeration on the hedonic prices of worker skills we find that large cities are more skilled than are small cities but only to a modest degree we also show that the increase in productivity associated with agglomeration as measured by the urban wage premium is larger for workers with stronger cognitive and people skills in contrast motor skills and physical strength are not rewarded to a greater degree in large cities urbanization thus enhances thinking and social interaction rather than physical abilities these results are robust to a variety of estimation strategies including using nlsy variables that control for worker quality and a worker msa fixed effect specification

explaining the spatial variation in housing prices an economic geography approach housing prices vary geographically even between neighbouring municipalities local differences can be attributed to differences in socio economic variables and real estate characteristics this article argues that one should additionally take into account the geographical location of municipalities in particular housing prices are affected by distance and travel time to important economic centres offering jobs and extensive services following the economic geography literature we develop a model showing the explicit impact of geographical barriers on housing prices as such we distinguish ourselves from the existing literature on the dynamics of housing prices since geographical elements are fairly constant over time we estimate our model on municipality level housing prices for all 589 belgian municipalities in 2001 we also differentiate between the two main regions of belgium flanders and wallonia our empirical results confirm expectations geographical barriers have significantly negative eff

economic growth in a cross section of cities abstract we examine the relationship between urban characteristics in 1960 and urban growth between 1960 and 1990 income and population growth move together and both types of growth are 1 positively related to initial schooling 2 negatively related to initial unemployment and 3 negatively related to the initial share of employment in manufacturing racial composition and segregation are uncorrelated with urban growth across all cities but in cities with large nonwhite communities segregation is positively correlated with population growth government expenditures except for sanitation are uncorrelated with growth government debt is positively correlated with later growth

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

ability and power over production in the distribution of earnings t he aggregate distribution of earnings in all western countries is approximately lognormal over most of its range but the earnings of the top 10 or 20 of individuals follow the pareto form which generates a great excess of very high earnings compared with the tail of a lognormal distribution individuals at the top appear to be paid according to the job they perform rather than their ability this paper explains these features in terms of profit maximising behaviour from time to time a single new manager or management team improves a company s profit by millions of dollars per year this shows that a senior manager can influence the company s total output far more than a junior employee his greater influence over output derives from having much more control over the company s resources profit maximising companies offer high salaries for senior management jobs because even a small improvement in their performance leads to a worthwhile increase in output and competitive bidding for the best managers then drives their salaries up to high levels this in outline is the explanation for high earnings developed formally in the rest of this paper

how the market solves an assignment problem the matching of lawyers with legal claims in the market for lawyers observable data on promotion and turnover can be explained by reference to the idea that there is positive assortative mating of lawyers and legal claims there is a scale of resources effect under which it is optimal to assign larger claims to lawyers of higher quality in a law firm the institution of tenure performs a sorting function lawyers found to be of high quality are given tenured positions and the rest leave the value of legal claims handled by a firm determines its sorting problem which in turn determines its promotion ladder and turnover

endogenous gentrification and housing price dynamics in this paper we begin by documenting substantial variation in house price growth across neighborhoods within a city during citywide housing price booms we then present a model which links house price movements across neighborhoods within a city and the gentrification of those neighborhoods in response to a citywide housing demand shock a key ingredient in our model is a positive neighborhood externality individuals like to live next to richer neighbors this generates an equilibrium where households segregate based upon their income in response to a citywide demand shock higher income residents will choose to expand their housing by migrating into the poorer neighborhoods that directly abut the initial richer neighborhoods the in migration of the richer residents into these border neighborhoods will bid up prices in those neighborhoods causing the original poorer residents to migrate out we refer to this process as endogenous gentrification using a variety of data sets and using bartik variation across cities to identify city level housing demand shocks we find strong empirical support for the model s predictions

income distribution and housing prices an assignment model approach we present a framework for studying the relation between the distributions of income and house prices that is based on an assignment model where households are heterogeneous by incomes and houses by quality each household owns one house and wishes to live in one house thus everyone is potentially both a buyer and a seller in equilibrium the distribution of prices depends on both distributions in a tractable but nontrivial manner we show how the impact of increased income inequality on house prices depends on the shapes of the distributions and can be inferred from data in our empirical application we find that increased income inequality between 1998 and 2007 had a negative impact on average house prices in 6 us metropolitan areas jel d31 r21

modeling and forecasting tourism demand for arrivals with stochastic nonstationary seasonality and intervention abstract this paper presents the use of time series sarima and marima with interventions in forecasting tourism demand using ten arrival series for hong kong augmented dickey fuller tests indicated that all the series were seasonal nonstationary significant interventions such as relaxation of the issuance of out bound visitors visas the asian financial crisis the handover and the bird flu epidemic were all empirically identified with significant test results and expected signs the forecasts obtained using models that capture stochastic nonstationary seasonality and interventions sarima and marima with intervention analysis are compared with other eight time series models and were found to have the highest accuracy

idiosyncratic risk and the equity premium evidence from the consumer expenditure survey abstract this paper investigates whether uninsured idiosyncratic risk accounts for the equity premium following mankiw j financial econ 17 1986 211 the paper develops an equilibrium factor model in which risk premia depend on the covariance between an asset s return and certain moments of the cross sectional distribution for consumption growth cross sectional consumption factors are constructed using data from the consumer expenditure survey but they do not appear to be promising candidates for explaining the equity premium the cross sectional factors are weakly correlated with stock returns and generate equity premia of 2 percent or less for preference specifications with low degrees of risk aversion

urban decline and durable housing urban decline is not the mirror image of growth and durable housing is the primary reason the nature of decline is so different this paper presents a model of urban decline with durable housing and verifies these implications of the model 1 city growth rates are skewed so that cities grow more quickly than they decline 2 urban decline is highly persistent 3 positive shocks increase population more than they increase housing prices 4 negative shocks decrease housing prices more than they decrease population 5 if housing prices are below construction costs then the city declines and 6 the combination of cheap housing and weak labor demand attracts individuals with low levels of human capital to declining cities

understanding the puzzling risk return relationship for housing standard theory predicts a positive relationship between risk and return yet recent data show that housing returns vary positively with risk in some markets but negatively in others this paper rationalizes these cross market differences in the risk return relationship for housing and in so doing explains the puzzling negative relationship the paper shows that when the current house provides a hedge against the risk associated with the future housing consumption households are willing to accept a lower return to compensate for risk thus weakening the positive risk return relationship further in markets with less elastic housing supply and a growing population hedging incentives can be sufficiently strong to make the relationship negative the empirical analysis confirms these predictions suggesting that hedging incentives housing supply and urban growth are indeed central to understanding the risk return relationship for housing the author 2013 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please e mail journals permissions oup com oxford university press

gibrat s law for all cities two empirical regularities concerning the size distribution of cities have repeatedly been established zipf s law holds the upper tail is pareto and city growth is proportionate census 2000 data are used covering the entire size distribution not just the upper tail the nontruncated distribution is shown to be lognormal rather than pareto this provides a simple justification for the coexistence of proportionate growth and the resulting lognormal distribution an equilibrium theory of local externalities that can explain the empirical size distribution of cities is proposed the driving force is a random productivity process of local economies and the perfect mobility of workers

renting vs buying a home a matter of wealth accumulation or of geographic stability abstract i study the housing tenure decision in the context of a spatial life cycle model with uninsurable individual income risk plausibly calibrated to match key features of the us housing market i find that the relatively low ownership rate of young households is mainly explained by their high geographic mobility downpayment constraints have minor quantitative implications on ownership rates except for old households i also find that idiosyncratic earnings uncertainty has a significant impact on homeownership rates based on these results i argue that the long term increase in ownership rates observed over the period 1993 2009 was not necessarily due to mortgage market innovations and the relaxation of downpayment requirements as is often argued instead it was simply an implication of us demographic evolution most notably the decline in interstate migration and less importantly population ageing the model predicts that an increase in the income risk i e higher income inequality has a positive impact on geographical mobility of young households which means that young homeowners are less affected by the labour market inefficiency associated with homeownership

on the optimal realignment of a contest the case of college football this article examines the relationship between demand and scheduling in college football we first derive two different metrics for team quality and then use those metrics to see how they impact attendance we find that there is a positive interaction between the quality of the teams then various simulations are run to see how attendance would change under different scheduling scenarios if teams are put into conferences based on the team quality measures the average per game attendance only rises 1 2 this is true if 1 year or 10 year quality measures are used however our simulation suggests that this effect would be more than offset mainly because schools with larger capacity would play fewer home games and so aggregate attendance would fall we discuss whether this effect would be mitigated by capacity adjustments in the longer term jel l83 z20 c78

time to build and the real options channel of residential investment abstract a standard real options model predicts that time to build investment could be delayed by uncertainty over future revenue we quantify the first order importance of this mechanism in the 2002 2011 housing boom bust cycle by developing and estimating a model of sequential irreversible investment with stochastic bottlenecks we find that the main driver of construction delays during the boom is construction bottlenecks however further delay in construction during the bust is caused by an increase in uncertainty which grew by 21 6 between 2002 and 2009 the model can account for more than one third of the decline in residential investment between 2002 and 2009

macroeconomic implications of agglomeration cities exist because of the productivity gains that arise from clustering production and workers a process called agglomeration how important is agglomeration for aggregate growth this paper constructs a dynamic stochastic general equilibrium model of cities and uses it to estimate the effect of local agglomeration on aggregate growth we combine aggregate time series and city level panel data to estimate the model s parameters via generalized method of moments the estimates imply a statistically and economically significant impact of local agglomeration on the growth rate of per capita consumption raising it by about 10

indivisible labor lotteries and equilibrium abstract this paper considers an economy where labor is indivisible and agents are identical although the discontinuity in labor supply at the individual level disappears as a result of aggregation it is shown that indivisible labor has strong consequences for the aggregate bahavior of the economy it is also shown that optimal allocations involve lotteries over employment and consumption

the effect of policy reforms on agricultural incentives in sub saharan africa in 1981 the world bank s report on subsaharan africa cited trade and exchange rate biases against exports poor macroeconomic and public sector management and a price bias against agriculture as contributing to the region s poor performance and slow growth world bank 1981 1986b since then average per capita income in the region has continued to fall overall agricultural production has grown more slowly than population declining food production per capita has led to rising food imports and for many of the primary agricultural exports africa s share of world trade has fallen steadily from 1970 to 1983 many african governments now agree on the central role of agriculture and the need to strengthen incentives in the sector united nations this paper assesses how reforms in macroeconomic and sector policies have affected agricultural incentives government policies can be broadly classified into three groups macroeconomic policies that affect incentives in all sectors generally agricultural sector policies that affect farm profitability directly by changing commodity and input prices and general and sector specific policies that may affect farm profitability indirectly by changing factor prices and influencing productivity e g public expenditures on research extension and infrastructure this paper analyzes the impact on agricultural incentives of the first two groups of policies the analysis of producer prices presented below is based on data for about twothirds of the countries in sub saharan africa which account for more than three fourths of agricultural gross domestic product gdp country coverage varies by indicator depending in part on whether comprehensive data are available simple averages are used to summarize policy performance across countries in contrast to weighted averages commonly used to assess aggregate economic effects the analysis of producer prices covers one to four principal export crops per country 2

stochastic house appreciation and optimal mortgage lending w e characterize the optimal mortgage contract in a continuous time setting with stochastic growth in house price and income costly foreclosure and a risky borrower who requires incentives to repay his debt we show that many features of subprime loans can be consistent with properties of the optimal contract and that when house prices decline mortgage modification can create value for borrowers and lenders our model provides a number of empirical predictions that relate the features of mortgage contracts originated in a housing boom and the extent of their modification in a slump to location and borrowers characteristics jel g20 g21 g33

indivisible labor and the business cycle abstract a growth model with shocks to technology is studied labor is indivisible so all variability in hours worked is due to fluctuations in the number employed we find that unlike previous equilibrium models of the business cycle this economy displays large fluctuations in hours worked and relatively small fluctuations in productivity this finding is independent of individuals willingness to substitute leisure across time this and other findings are the result of studying and comparing summary statistics describing this economy an economy with divisible labor and post war u s time series

the impact of proposition 13 on house prices in northern california a test of the interjurisdictional capitalization hypothesis it wen institute of business and university of california economic research berkeley center for real estate and urban economics wobkingipaper series these papers are preliminary ature their purpose 39 limul discussion comme h re they are not to be 39 or quoted ny publication without express permission of the author working paper no 80 11 the impact of proposition 13 on house prices in northern california a test of the interjurisdictional capitalization hypothesis by kenneth t rosen

worker allocation hierarchies and the wage distribution economists have traditionally viewed the allocation of workers among jobs through the concept of comparative advantage this paper investigates hierarchical production models which display an absence of comparative advantage in order to demonstrate that for hierarchical production there is a second allocating factor which plays an important role two results are found first the allocation of workers among jobs tends to match high ability workers with positions which value ability highly second despite the fact that the models display an absence of comparative advantage i e the standard theoretical explanation for why wage distributions might be skewed the models wage distributions are skewed to the right relative to the underlying ability distributions

house prices borrowing constraints and monetary policy in the business cycle i develop a general equilibrium model with sticky prices credit constraints nominal loans and asset prices changes in asset prices modify agents borrowing capacity through collateral value changes in nominal prices affect real repayments through debt deflation monetary policy shocks move asset and nominal prices in the same direction and are amplified and propagated over time the financial accelerator is not constant across shocks nominal debt stabilises supply shocks making the economy less volatile when the central bank controls the interest rate i discuss the role of equity debt indexation and household and firm leverage in the propagation mechanism finally i find that monetary policy should not target asset prices as a means of reducing output and inflation volatility

the importance of bundling in a gorman lancaster model of earnings the idea that the labor market of individuals can be decomposed into payments to separate productive attributes has an enduring appeal in economics assuming that demographic groups differ only in their endowments of productive characteristics it is possible to rationalize observed demographic earnings differentials without invoking the arguments that characteristics specific to a particular demographic group are direct objects of employer demand by aggregating skills over all demographic groups it is possible to produce a theory of the market determination of the prices of skills held in different amounts by different demographic groups this paper considers conditions under which characteristics are uniformly priced across sectors of a multisector economy the paper presents empirical evidence that rejects uniform pricing of characteristics as a description of the us labor market bundling may account for this evudence but other hypotheses do as well authors

search liquidity and the dynamics of house prices and construction the dynamics of house prices sales construction and population growth in response to city specific income shocks are characterized for 106 us cities a dynamic model of search in the housing market in which construction the entry of buyers house prices and sales are determined in equilibrium is then developed the theory generates dynamics qualitatively consistent with the observations and a version calibrated to match key features of the us housing market offers a substantial quantitative improvement over models without search in particular variation in the time it takes to sell induces transaction prices to exhibit serially correlated growth jel d83 r21 r23 r31 we explore the consequences of time consuming search and matching for the dynamics of house prices sales and construction at the city level first we char acterize the impact of city specific income shocks on the short run dynamics of average house prices home sales construction and population growth for a panel of us cities we then develop a model in which the entry of new buyers and the construction of new houses in response to such shocks are endogenously determined our theory generates serial correlation in the growth rates of house prices and construction even if income is strictly mean reverting following shocks 1 when calibrated to data on us cities our model accounts for over 80 percent of the variance of house price movements driven by city specific income shocks and nearly half of the observed autocorrelation of house price growth in our empirical analysis we estimate a structural panel vector autoregressive var model using city level observations on the variables listed above we focus

insurance and opportunities a welfare analysis of labor market risk abstract using a model with constant relative risk aversion preferences endogenous labor supply and partial insurance against idiosyncratic wage risk this paper provides an analytical characterization of three welfare effects a the welfare effect of a rise in wage dispersion b the welfare gain from completing markets and c the welfare effect from eliminating risk the analysis reveals an important trade off for these welfare calculations on the one hand higher wage uncertainty increases the cost associated with missing insurance markets on the other hand greater wage dispersion presents opportunities to raise aggregate productivity by concentrating market work among more productive workers welfare effects can be expressed in terms of the underlying parameters defining preferences and wage risk or alternatively in terms of changes in observable second moments of the joint distribution over individual wages consumption and hours

leading indicator tourism forecasts leading indicators have been widely used in general business forecasting situations but only rarely in a tourism context in this study leading indicator transfer function tf models are developed to generate forecasts of international tourism demand from the uk to six major destinations the out of sample forecasting accuracy is compared with the accuracy of forecasts generated by univariate arima and error correction models ecms the inclusion of a causal input within an arima time series framework tf model does not result in an improvement in forecasting performance the time series models outperform the ecm for short term forecasting but the ecm generates more accurate longer term forecasts

supply constraints and housing market dynamics abstract although the volatility of house prices is often ascribed to demand side factors constraints on housing supply have important and little studied implications for housing dynamics i illustrate the strong relationship between the volatility of house prices and the regulation of new housing supply i then employ a dynamic structural model of housing investment to investigate the mechanisms underlying this relationship i find that supply constraints increase volatility through two channels first regulation lowers the elasticity of new housing supply by increasing lags in the permit process and adding to the cost of supplying new houses on the margin second geographic limitations on the area available for building houses such as steep slopes and water bodies lead to less investment on average relative to the size of the existing housing stock leaving less scope for the supply response to attenuate the effects of a demand shock my estimates and simulations confirm that regulation and geographic constraints play critical and complementary roles in decreasing the responsiveness of investment to demand shocks which in turn amplifies house price volatility

housing investment in the united states a supply determined model of housing investment is estimated from quarterly data over the 1963 83 period the model is built on dynamic marginal cost pricing considerations and allows short and long run supply elasticities to differ these are estimated as 1 0 and 3 0 respectively but most of the long run response occurs within 1 year rapid adjustment speed and the sizable long run elasticity of supply are important factors in understanding the volatility of housing investment the data also suggest some anomalies in the expected present value theory of asset pricing for housing capital

nonparametric methods and local time based estimation for dynamic power law distributions summary this paper introduces nonparametric econometric methods that characterize general power law distributions under basic stability conditions these methods extend the literature on power laws in the social sciences in several directions first we show that any stationary distribution in a random growth setting is shaped entirely by two factors the idiosyncratic volatilities and reversion rates a measure of cross sectional mean reversion for different ranks in the distribution this result is valid regardless of how growth rates and volatilities vary across different economic agents and hence applies to gibrat s law and its extensions second we present techniques to estimate these two factors using panel data third we describe how our results imply predictability as higher ranked processes must on average grow more slowly than lower ranked processes we employ our empirical methods using data on commodity prices and show that our techniques accurately describe the empirical distribution of relative commodity prices we also show that rank based out of sample forecasts of future commodity prices outperform random walk forecasts at a 1 month horizon

pay technology and the cost of worker absence i introduction the complexity of patterns of worker absence is well known but is yielding reluctantly to studies that use highly detailed information about individual workers and their work environments to date these studies have focussed on how specific contractual details affect worker absenteeism rates 1 in this paper we instead take an equilibrium perspective where we assume heterogeneous firms and heterogeneous workers participate in a competitive labor market by understanding why firms with different technologies may have different policies toward absenteeism we can begin to explain observed differences in absenteeism rates across workers and firms the empirical framework is based on coles and treble 1996 which considers an equilibrium assignment model with heterogeneous firms and workers the standard assignment framework 2 assumes that each filled job is characterized by one machine of quality q and one employee with skill level s a competitive equilibrium yields a wage schedule w and an assignment rule q where a worker of skill s is hired at wage w w s by a firm holding machine q q s coles and treble 1996 do not assume that workers are differently skilled instead workers have different propensities to go absent also instead of a one worker one machine production process firms utilize different production technologies some use an assembly line technology where output requires that a sufficient number of workers show up for work and others use a linear production technology in which there are constant marginal returns to labor for reasons that will become clear a competitive equilibrium yields a wage schedule and an assignment rule that depend on worker propensities to go absent specifically workers with a lower propensity to go absent earn a higher wage and are employed in firms using assembly line technologies the key insight is that firms who operate assembly line technologies have a different shadow cost of absenteeism from those which operate a linear technology as in weiss 1985 and coles and treble 1993 in the latter technology an absence by one particular worker does not affect the marginal productivity of other workers at the firm this is not true in an assembly line firm or in production functions where labor inputs are strict complements as in kremer 1993 coles and treble 1996 consider a market equilibrium in which workers are also heterogeneous say workers have different family responsibilities in this case a competitive labor market implies equilibrium sorting by firms and workers assembly line firms require a low level of absenteeism and pay a relatively high wage to compensate workers for attending work reliably we refer to this as the shadow cost of absenteeism workers who have a comparative advantage in attending work reliably say those who do not have to look after children when the children are sick take employment in assembly line firms and enjoy the wage premium attached to employment there we refer to this as the shadow price of absenteeism conversely those who appreciate greater flexibility in work attendance take employment in the linear technology firms and in equilibrium earn a lower average wage rate although absenteeism may be costly to firms observed absenteeism rates are not necessarily inefficient the worker who misses a day at work to look after sick children or enjoy a sports event is expressing a trade off between workplace production and home production where home productivity is perhaps subject to idiosyncratic shocks efficient contracting implies that firms and workers agree to an acceptable absenteeism rate and a compensating wage differential efficient sorting implies that those workers who can commit to attending work reliably accept employment in assembly line occupations and so earn a wage premium reflecting the shadow price of absenteeism our goal is to identify and measure this shadow price using a unique data set from france

the area and population of cities new insights from a different perspective on cities the distribution of city populations has attracted much attention in part because it constrains models of local growth however there is no consensus on the distribution below the very upper tail because available data need to rely on legal rather than economic definitions for medium and small cities to remedy this difficulty we construct cities from the bottom up by clustering populated areas obtained from high resolution data we find that zipf s law for population holds for cities as small as 5 000 inhabitants in great britain and 12 000 inhabitants in the us we also find a zipf s law for areas jel r11 r12 r23

the effects of recent price liberalization on kenyan peri urban dairy a case study using the policy analysis matrix approach abstract when shortages of dairy products became severe in kenya early in 1992 prices of dairy products were de controlled to improve the incentives to producers the impact of that policy change is examined using the policy analysis matrix pam methodology a case study of the marketing chain involving small holder peri urban dairy producers in the nyeri region is considered the price policy reform removed only between 20 per cent and 30 per cent of the negative policy effects on most dairy producers depending on the technology used the market thus remains non competitive and a single large dairy processor was the biggest beneficiary of the policy change

insurance and opportunities the welfare implications of rising wage dispersion this paper develops a series of heterogeneous agents economies in order to characterize analytically the welfare implications of changes in the uncertainty in individual labor productivity we perform two types of welfare calculations first we compute the welfare consequences of a rise in labor market risk given a particular asset market structure complete markets incomplete markets autarky second we compute the expected gain from completing markets starting from autarky or incomplete markets for a given level of wage dispersion we are able to derive intuitive closed form expressions for these welfare eects which depend only on preference parameters and the size of the change in wage dispersion a higher level of productivity dispersion has always two eects it tends to reduce welfare in presence of partial insurance but it also tends to improve production opportunities in presence of flexible labor supply we can separate analytically the insurance and the opportunity components we quantify the welfare consequences of the rise in wage inequality observed in the united states over the past three decades as roughly 3 of lifetime consumption moreover we calculate that completing the asset markets given the current level of inequality would lead to a welfare improvement equivalent to 35 of lifetime consumption

why has regional income convergence in the u s declined the past thirty years have seen a dramatic decrease in the rate of income convergence across states and in population flows to wealthy places these changes coincide with 1 an increase in housing prices in productive areas 2 a divergence in the skill specific real returns to living in productive places 3 a redirection of low skilled migration and 4 diminished human capital convergence due to migration we develop a model where falling housing supply elasticity and endogenous labor mobility generates these patterns using a new panel measure of housing supply regulations we demonstrate the importance of this channel income convergence continues in less regulated places while it has stopped in more regulated places

consumption over the life cycle facts from consumer expenditure survey data this paper uses consumer expenditure survey data and a seminonparametric statistical model to estimate life cycle profiles of consumption controlling for demographics cohort and time effects we construct age profiles for total and nondurable consumption as well as expenditure patterns for consumer durables special emphasis is placed on the comparison of different approaches to control for changes in demo graphics over the life cycle we find significant humps over the life cycle for total nondurable and durable expenditures changes in household size account for roughly half of these humps bootstrap simulations suggest that our empirical estimates are tight in that standard errors are small

housing dynamics an urban approach abstract a dynamic linear rational equilibrium model in the tradition of alonso rosen and roback is consistent with many outstanding stylized facts of housing markets these include a that the markets are local in nature b that construction persistence is fully compatible with mean reversion in prices and c that price changes are predictable calibration exercises to match moments of the real data have notable successes and failures the volatility in local income processes as reflected in hmda mortgage applicant data can account for much of the observed price and construction volatility except for the most inelastically supplied local markets the model s biggest failure lies in its inability to match the strong persistence in high frequency price changes from year to year

does unmeasured ability explain inter industry wage differentials this paper provides empirical assessments of the two leading explanations of measured inter industry wage differentials 1 true wage differentials exist across industries and 2 the measured differentials simply reflect unmeasured differences in workers productive abilities first we summarize the existing evidence on the unmeasured ability explanation second we construct a simple model which shows that if matching is important then endogenous job change decisions can create important self selection biases even in first differenced estimates of industry wage differentials third we analyze a sample that approximates the experiment of exogenous job loss we find that i the wage change experienced by a typical industry switcher closely resembles the difference in the relevant industry differentials estimated in a cross section and ii pre displacement industry affiliation plays an important role in post displacement wage determination

the costs of indonesian sugar policy a policy analysis matrix approach indonesian sugar policy is a complex web of contradictory policies including mandatory production price supports and fertilizer and credit subsidies the policy analysis matrix pam was developed by monke and pearson to provide a more complete perspective on social profitability and the divergence between private and social costs than other commonly used social cost benefit measures the pam is used to analyze the effects of indonesian sugar policy on sugar production in irrigated and dryland areas on java the main sugar producing region in indonesia and to identify the distribution of resource transfers

banking integration and house price co movement abstract the correlation in house price growth across us states increased steadily between 1976 and 2000 this paper shows that the contemporaneous geographic integration of the us banking market via the emergence of large banks was a primary driver of this phenomenon to this end we first theoretically derive an appropriate measure of banking integration across state pairs and show that house price growth correlation is strongly related to this measure of financial integration our instrumental variable estimates suggest that banking integration can explain up to one fourth of the rise in house price correlation over this period

back propagation learning in improving the accuracy of neural network based tourism demand forecasting abstract traditional tourism demand forecasting techniques concentrate predominantly on multivariate regression models and univariate time series models these single mathematical function based forecasting techniques although they have achieved a certain degree of success in tourism forecasting are unable to represent the relationship of demand for tourism as accurate as a multiprocessing node based feed forward neural network previous research has demonstrated that using a feed forward neural network can accomplish a higher forecasting accuracy than the regression and time series techniques for a set of linearly separable tourism demand data this research extends the applicability of neural networks in tourism demand forecasting by incorporating the back propagation learning process into a non linearly separable tourism demand data empirical results indicate that utilizing a back propagation neural network outperforms regression models time series models and feed forward neural networks in terms of forecasting accuracy

rural taxation in ethiopia 1981 1989 a policy analysis matrix assessment for net producers and net consumers abstract during the period of socialist rule 1974 1991 ethiopian agriculture was subject to an array of policy interventions this paper uses a policy analysis matrix pam approach to determine the effects of various policies on different types of households and in aggregate the analysis extends the usual use of pams by including consumption requirements and by addressing the variation in the impact of specific policies through time household models are used to quantify the effects of government intervention on both net consumers and net producers of cereals the analysis reveals that although cereal purchases were sometimes subsidized through overvaluation cereal deficit households paid high prices because of market segmentation and experienced reduced incomes due to exchange rate distortions households that tended to be surplus faced substantial indirect taxes through low producer prices results suggest that undistorted markets could enable many farms to accumulate sufficient reserves to cope with production variations but farms with average land availabilities are not sustainable given current technologies even with efficient commodity markets

the cyclical behavior of the beveridge curve in the housing market abstract this paper develops a business cycle model of the housing market with search frictions and entry of both buyers and sellers the housing market exhibits a well established cyclical component which features three stylized facts prices move in the same direction as sales and the number of houses for sale but opposite to the time it takes to sell a house these stylized facts imply that in the data housing vacancies and the number of buyers are positively correlated i e that the beveridge curve is upward sloping a baseline search and matching model of the housing market is unable to match these stylized facts because it inherently generates a downward sloping beveridge curve with free entry of both buyers and sellers our model reproduces the positive correlation between prices sales and vacancies and matches the stylized facts qualitatively and quantitatively

the measurement of agricultural price distortion in developing countries the most common means of measuring agricultural price distortion in less developed countries has been through the estimation of variously defined nominal protection coefficients the objectives of this article are a to demonstrate that the coefficients which have been employed are inadequate for measuring price distortion b to develop a suitable method for measuring distortion at each point on domestic marketing chains and c to demonstrate using the example of maize in kenya the potential magnitude and direction of the differences between the conventional coefficients and the distortion coefficients developed in the article

strategies for sustainable agricultural development in the ethiopian highlands this paper investigates the impacts of population growth market access agricultural credit and technical assistance programs land policies livelihood strategies and other factors on changes in land management natural resource conditions and human welfare indicators since 1991 in the northern ethiopian highlands based on a survey of 198 villages we find that population growth has contributed significantly to land degradation poverty and food insecurity in this region in contrast better market access and some credit and technical assistance programs were associated with improvement or less decline in land quality wealth and food security suggesting the possibility of win win win development outcomes with appropriate interventions land redistribution was associated with adoption of inorganic fertilizer but also with declining use of fallow and declining soil fertility we find also that different land management practices are adopted where different livelihood strategies are pursued suggesting the importance of considering livelihood strategies in technical assistance programs development strategies should be tailored to the different comparative advantages of different locations no one size fits all strategy will work everywhere this abstract was borrowed from another version of this item

self selection and the distribution of hourly wages this article formulates and estimates alternative equilibrium models of industrial wage determination and self selection in explaining industrial wage differentials we find that it is important to account for heterogeneous sector specific skills and self selection decisions by agents concerning their sector of employment the classical roy model is rejected so is an efficiency units model of the labor market a revised roy model that accounts for comparative advantage in the choice of industrial sectors and choice between market and nonmarket work is much more successful in explaining cross section wage distributions and their evolution over time

segmented housing search we study housing markets with multiple segments searched by heterogeneous clienteles in the san francisco bay area search activity and inventory covary negatively across cities but positively across market segments within cities a quantitative search model shows how the endogenous flow of broad searchers to high inventory segments within their search ranges induces a positive relationship between inventory and search activity across segments with a large common clientele the prevalence of broad searchers shapes the response of housing markets to localized supply and demand shocks broad searchers help spread shocks across many segments and reduce their effect on local market activity

marriage markets and assortative mating with household public goods theoretical results and empirical implications this paper analyzes marriage market equilibria when the gains from marriage result from joint consumption of household public goods assuming transferable utility within marriage the paper proves that marriage markets will be characterized by positive assortative mating on wealth when spouses differ only in endowments and the gains to marriage result only from public goods when spouses differ in wages and household public goods are produced at home the results imply offsetting effects with public good economies creating an incentive for positive assortative mating on wages and gains from specialization creating an incentive for negative assortative mating on wages the results help explain the persistent lack of empirical support for becker s prediction of negative assortative mating on wages and have implications for empirical analysis of all joint living arrangement decisions

education matching and the allocative value of romance societies are characterized by customs governing the allocation of non market goods such as marital partnerships we explore how such customs affect the educational investment decisions of young singles and the subsequent joint labour supply decisions of partnered couples we consider two separate matching paradigms for agents with heterogeneous abilities one where partners marry for money and the other where partners marry for romantic reasons orthogonal to productivity or debt these generate different investment incentives and therefore have a real impact on the market economy while marrying for money generates greater investment efficiency romantic matching generates greater allocative efficiency since more high ability individuals participate in the labour market the analysis offers the possibility of explaining cross country differences in educational investments and labour force participation based on matching regimes

why has house price dispersion gone up we calibrate a dynamic general equilibrium island model to investigate the 30 year increase in the level of house prices and their dispersion across u s metropolitan areas the model is based on two main assumptions households o w in and out metropolitan areas in response to local productivity shocks and the housing supply cannot adjust instantly because of technological and regulatory constraints the calibration reveals that the observed tightening of housing supply regulation cannot quantitatively account for the rise in the level and dispersion of house prices in equilibrium workers o w out of tightly regulated towards less regulated metropolitan areas undoing most of the price impact of local supply restrictions in contrast the observed increase in wage dispersion across metropolitan areas does create the observed increase in the level and dispersion of house prices workers o w towards exceptionally productive metropolitan areas and drive house prices up the calibration also suggests that the welfare eects of housing supply regulation are large when wages become more dispersed

classical competitive analysis of economies with islands arrow debreu competitive equilibrium analysis is extended to environments with information sets differing in space as well as in time and with people moving between locations equilibrium is shown to exist and to be optimal and the equilibrium price system is characterized such environments include many of those studies in the sectoral reallocation literature

understanding gross worker flows across u s states abstract the main cross sectional and time series properties of state level gross and net worker flows wages and rents are characterized using micro data from the u s census a dynamic general equilibrium model of worker migration is introduced to explain the stylized facts in the model a location may experience simultaneous inflows and outflows of workers recent migrants choose to migrate more often than incumbent workers thus locations that attract high numbers of migrants also tend to experience high outflow rates this pattern is a robust feature of the data and cannot be explained by models of net flows only

bayesian models for tourism demand forecasting abstract this study extends the existing forecasting accuracy debate in the tourism literature by examining the forecasting performance of various vector autoregressive var models in particular this study seeks to ascertain whether the introduction of the bayesian restrictions priors to the unrestricted var process would lead to an improvement in forecasting performance in terms of achieving a higher degree of accuracy the empirical results based on a data set on the demand for hong kong tourism show that the bayesian var bvar models invariably outperform their unrestricted var counterparts it is noteworthy that the univariate bvar was found to be the best performing model among all the competing models examined

consumption and risk sharing over the life cycle a striking feature of u s data on income and consumption is that inequality increases with age this paper asks if individual specific earnings risk can provide a coherent explanation we find that it can we construct an overlapping generations general equilibrium model in which households face uninsurable earnings shocks over the course of their lifetimes earnings inequality is exogenous and is calibrated to match data from the u s panel study on income dynamics consumption inequality is endogenous and matches well data from the u s consumer expenditure survey the total risk households face is decomposed into that realized before entering the labor market and that realized throughout the working years in welfare terms the latter is found to be more important than the former

spatial asset pricing a first step people choose where to live and how much to invest in housing traditionally the first decision has been the domain of spatial economics while the second has been analyzed in finance spatial asset pricing is an attempt to combine equilibrium concepts from both disciplines in the finance context we show how spatial decisions can be framed as an expanded portfolio problem within spatial economics we identify the consequences of hedging motives for location decisions we characterize a number of observable deviations from standard predictions in finance e g the definition of the relevant market portfolio for the pricing of risk includes homeownership rates and in spatial economics e g hedging considerations and the pricing of risk affect the geographic allocation of human capital

livestock pricing policy in sub saharan africa objectives instruments and impact in five countries abstract livestock pricing policies in many developing countries are often instituted without a good appreciation of the consequences of such policies for allocative efficiency output and trade this paper evaluates in a comparative cross country context the objectives and instruments of livestock pricing policy in five sub saharan african countries ivory coast mali nigeria sudan and zimbabwe during the period 1970 1986 it assesses the extent to which pricing policy objectives have been attained and also estimates the effects of price interventions on output consumption trade and government revenues in order to draw out lessons for the future the empirical results indicate that in comparison with real border prices a certain degree of success was achieved in stabilising real domestic producer prices in the study countries the results also show that since the early 1980s there has been a gradual shift away from taxation of producers however consumers still appear to gain as much as producers in three of the study countries with negative consequences for foreign exchange earnings and government revenues the analysis reveals the importance of domestic inflation and exchange rates as key variables for livestock pricing policies and highlights the need to address the macroeconomic imbalances that cause exchange rate distortions and high domestic inflation at the same time that direct price distortions are being tackled

tourism demand for italy and the business cycle this study provides a strategy for modelling the effect of the business cycle on tourism demand under the rationale that tourism cycles are heavily influenced by lagged effects of the overall business cycle using quarterly data on overnight stays in italian hotels both domestic and inbound between 1985 and 2004 we adopt a structural time series approach to evaluate two alternative models the first with a latent cycle component lcc and the second based on specific economic explanatory variables xcv the two models are compared in terms of explanatory power best fit residual diagnostics and forecasting ability the results show similar performances the policy implication is that the xcv model can be used for calibrating countercyclical interventions in tourism policy

a note on aggregation of skills and labor quality we use a unique new data set that combines data on individual workers and their employers to estimate marginal productivity differentials among different types of workers we then compare these to estimated relative wages leading to new evidence on

empirical analysis of occupational hierarchies using data on u s engineers and the position of engineering jobs within firms this paper estimates a model of hierarchies within firms the model extends rosen s 1982 model of recursive production to two skills and multiple hierarchy levels the model generates an empirical model that is nested within a general roy 1951 model of self selection maximum likelihood estimates of the parameters of the production technology and the skill experience profiles are estimated the results suggest that approximately two thirds of changes in employment shares across hierarchy levels across time are explained by demographic shifts in the stock of engineering skills most of the returns to experience and to assignment to higher hierarchy levels within firms are caused by skill accumulation and self selection rather than technological dierences across hierarchy levels

heterogeneous firms and the organization of production firms in the same industry exhibit systematic differences in the organization of production and the structure of employment entrepreneurial ability is the specific scarce input that limits the size of a firm this input must be allocated to two activities coordinating production and monitoring workers able entrepreneurs can convert calendar time into larger supplies of coordinating effort that enable them to assemble large firms greater ability implies a higher shadow price of time which increases the implicit costs of monitoring a dispersion of entrepreneurial abilities generates an equilibrium size distribution of firms differences in monitoring costs affect the choice of worker productivities the design of products and the organization of production the monitoring cost hypothesis advanced in this paper goes a long way in explaining the equilibrium of an industry containing heterogeneous firms that differ in size and behavior

the relevance of business cycles in forecasting international tourist arrivals abstract casual empiricism suggests that there may be a cyclical trend associated with international tourist arrivals in which variation around the linear trend can be formed by the interaction with other cyclical phenomena this paper employs a simple model that incorporates a linear trend and sine function to capture these two characteristics in forecasting international tourist arrivals in hong kong the model is extended to include a set of sine functions through the application of fourier analysis to account for situations in which more than one phenomenon may be present in the time series the forecasting accuracy of the model is compared with other forecasting approaches evaluation of the results using the mean absolute percentage error measure show that the forecasting performance of the extended model with a linear trend and two sine functions is superior in terms of accuracy when compared with other forecasting models

hedonic prices and implicit markets estimating demand and supply functions for differentiated products in choosing the level of quality to purchase the buyer of a differentiated product also chooses a point on the marginal price schedule for that product hence in general the demand functions for product characteristics cannot be consistently estimated by ordinary least squares market equilibrium results in a matching of characteristics of demanders and suppliers this matching restricts the use of buyer and seller characteristics as instruments when estimating demand and supply functions for product characteristics the paper develops these issues a stochastic structure for hedonic equilibrium models is then proposed identification results are presented and estimation procedures are outlined