language and the earnings of immigrants several studies most of them employing straightforward regression analysis have concluded that immigrants proficiency in the language of their adopted country is correlated with their productivity as measured by earnings two weaknesses of these studies are potential unobserved heterogeneity which could result in over estimated effects if overall ability is linked with language acquisition and potential measurement error in the language proficiency measures which would probably result in under estimation of language effects the present study which uses panel data for a 10 year period in germany yields evidence that the latter bias tends to be much larger than the former implying that language proficiency is far more important than suggested by the existing literature

are ghettos good or bad spatial separation of racial and ethnic groups may theoretically have positive or negative effects on the economic performance of those groups we examine the effects of segregation on outcomes for blacks in schooling employment and single parenthood we find that blacks in more segregated areas have significantly worse outcomes than blacks in less segregated areas we control for the endogeneity of location choice using instruments based on political factors topographical features and residence before adulthood a one standard deviation decrease in segregation would eliminate one third of the black white differences in most of our outcomes

a model of the used car market with lemons and leasing this article extends kim s 1985 model of the used car market with asymmetric information to examine the possible impacts of leasing and certified pre owned cpo programs on the average quality of traded used cars in the market the author assumed that a consumer can buy or lease a new car or he she can buy a used or a cpo car while like kim 1985 the author assumed that the quality of a car depends on the maintenance level the maintenance level in this model is chosen when a car is still a new car i e after the warranty ends the model implied that the average quality of traded used cars can be either higher or lower than the average quality of nontraded used cars the study also found that leasing and cpo have substantially improved the information mechanism between buyers and sellers of used cars which in turn has helped reduce adverse selection and improved the average quality of traded used cars in the market

ethnicity neighborhoods and human capital externalities the socioeconomic performance of today s workers depends not only on parental skills but also on the average skills of the ethnic group in the parents generation or ethnic capital this paper investigates the link between the ethnic externality and ethnic neighborhoods the evidence indicates that residential segregation and the external effect of ethnicity are linked partly because ethnic capital summarizes the socioeconomic background of the neighborhood where the children were raised ethnicity has an external effect even among persons who grow up in the same neighborhood when children are exposed frequently to persons who share the same ethnic background copyright 1995 by american economic association

return migration the european experience labour immigration contributed strongly to europe s post war economic development in contrast to migration to north america or australia these movements of labour were always seen as temporary by sending and receiving countries and at least initially also by most migrants although many migrants stayed more permanently return migration is a highly relevant feature in practice its significant role and the underlying behavioural mechanisms are not well understood however it is therefore not too surprising that most policy measures taken in the 1970s and 1980s to encourage return migration failed the paper takes the view that much can be learned from recent european history temporary immigration schemes may be helpful to moderate illegal migration and to foster east west economic relationships given the tight policies in the european union short term migration seems to be the only channel to open the door slightly the paper reviews the european history of return migration and the policy regimes in important european labour migration receiving countries it also provides new empirical evidence on the determinants of return behaviour and successful return return propensities of migrants increase with the age at entry but decrease with the number of years of residence conditional on having decided to return however the remaining years in the country decrease with years of residence and keeping years of residence constant with entry age return incentives may cause dissatisfaction and reintegration problems in the home country the results support the view that economic benefits are the larger the earlier it is clear whether migration is temporary or permanent

durable goods theory for real world markets the early 1970s witnessed three major advances in durable goods theory swan 1970 1971 and sieper and swan 1973 on optimal durability coase 1972 on time inconsistency and akerlof 1970 on adverse selection this paper surveys durable goods theory starting with these three contributions where much of the focus is on recent literature and on models that explain real world phenomena in addition to the ideas found in the contributions of swan coase and akerlof topics covered include why producers sometimes practice planned obsolescence the role of adverse selection in new car leasing and reasons for aftermarket monopolization

the labor market impact of immigration a quasi experiment exploiting immigrant location rules in germany with the fall of the berlin wall ethnic germans living in eastern europe and the former soviet union were given the opportunity to migrate to germany within 15 years 2 8 million individuals had done so upon arrival these immigrants were exogenously allocated to different regions to ensure an even distribution across the country their inflow can therefore be seen as a quasi experiment of immigration i analyze the effect of these inflows on skill specific employment rates and wages the results indicate a displacement effect of 3 1 unemployed workers for every 10 immigrants that find a job but no effect on relative wages

signal facilitation a policy response to asymmetric information in cases of asymmetric information policymakers sometimes want to make informed agents share their private information one policy response to this situation is signal facilitation altering the environment to encourage signaling this article illustrates signal facilitation in the context of a competitive used car market sellers may determine quality and reveal it through warranties signal facilitation compares favorably to a policy of mandatory disclosure because car dealers can refuse to test and signal if the cost is excessive also this policy permits dealers to select less costly less revealing alternatives that may enhance social welfare copyright 1992 by university of chicago press

optimum tariffs for vertically differentiated products with an application to indian tea exports optimum export tariffs are typically related to the elasticity of demand for exports in homogeneous goods markets in this paper we set up a simple model for large exporters of quality differentiated products and estimate optimum tariffs based on the quality of the good restrictions on demand parameters implied by the theoretical model are used in estimating demands for different qualities of indian tea exports we use the estimated model to find optimum tariffs for two qualities of indian tea exports and find that optimum export tariffs for high quality teas should on average be 14 higher than the tariff on low quality tea exports

price discrimination via second hand markets consumers have heterogeneous tastes for new and used goods and second hand markets involve transactions costs a monopoly seller may gain or lose from the existence of a second hand market locally it may prefer lower transactions costs but globally it may prefer high transactions costs so it can strangle the used market the monopolist uses the second hand market as an indirect device to achieve a form of second degree price discrimination if the monopolist can control the quality of its product when used it may wish to deteriorate this quality to worthless or else to have it as good as new

quality undersupply and oversupply abstract i analyze a market in which a price taking buyer buys a variable quality good from a population of sellers contrasting the case where quality is a seller s private information to that where it is public information average quality traded under private information can be either higher quality oversupply or lower quality undersupply than under public information depending on sellers preferences we are likely to see quality undersupply if i sellers preferences exhibit substitutability between the variable quality good and the numeraire good and or ii sellers view the numeraire good as a luxury good relative to the variable quality good reverse arguments hold for quality oversupply

a direct test of the lemons model the market for used pickup trucks of the implications of models of markets with asymmetric information in the seminal paper on markets with asymmetric information george akerlof 1970 pointed out two possible outcomes that may occur where sellers have better information about the quality of products than do buyers one possibility is that bad products will drive out good products if buyers cannot distinguish quality until after the purchase has been made there will be no incentive for sellers to provide good quality products and the average quality in the market will decline in the case of cars an often cited example of this phenomenon owners who discover that they have a lemon will attempt to sell it in the used car market to an unsuspecting buyer the owner of a creampuff will not sell his car since it is indistinguishable from a lemon to buyers and must therefore sell for the price of a car of average quality the effect of quality uncertainty is to reduce the volume of transactions in the used car market below the socially optimal level a second possibility suggested by akerlof is that institutions may develop to counteract the effects of quality uncertainty warranties and brand names can be used to give the buyer some assurance of quality these institutions may prevent good products from being driven from the market but they will

sixty years after the magic carpet ride the long run effect of the early childhood environment on social and economic outcomes this paper estimates the effect of the early childhood environment on a large array of social and economic outcomes lasting almost 60 years to do this we exploit variation in the living conditions experienced by yemenite children after being airlifted to israel in 1949 we find that children who were placed in a more modern environment i e with better sanitary and infrastructure conditions were more likely to obtain higher education marry at an older age have fewer children and work at age 55 they were also more likely to be assimilated into israeli society to be less religious and have more worldly tastes in music and food however these effects are found mainly for women and not for men we also find an effect on the next generation children who lived in a better environment grew up to have children with more education

the flat rental puzzle 4cars and replace them after 2 years or when their odometer exceeds 34 000 km this is a very costly 5 strategy caused by rapid depreciation in used car prices we show how economic theory predicts that 6 in a competitive market cars are rented out covering their full economic lifespan and rental prices are 7 a declining function of their odometer value our solution to these puzzles is that actual rental markets 8 are not fully competitive and firms may be behaving suboptimally we provide a case study of a large 9 car rental company that provided us access to its operating data we develop a model of the company s 10 operations that predicts that the company can significantly increase its profits by keeping its rental cars 11 twice as long as it currently does and also by discounting the rental cost of older vehicles to induce 12 its customers to rent them the company undertook an experiment to test our model s predictions 13 we report initial findings from this experiment which involved over 4500 rentals of over 500 cars in 14 4 locations over a 5 month period the results are consistent with the predictions of our model and 15 suggest that a properly chosen declining rental price function can increase overall revenues profits 16 also increase significantly since doubling the holding period of rental cars cuts discounted replacement 17 costs by nearly 40 18

ethnic enclaves and immigrant labor market outcomes quasi experimental evidence i examine the effects of the ethnic enclave size on labor market outcomes of immigrants i account for ability sorting into enclaves by exploiting a danish spatial dispersal policy under which refugees were randomly dispersed across locations first i find strong evidence that refugees with unfavorable unobserved characteristics self select into ethnic enclaves second a relative standard deviation increase in the ethnic enclave size increases annual earnings by 18 on average irrespective of skill level third further findings are consistent with the explanation that ethnic networks disseminate job information which increases the job worker match quality and thereby the hourly wage rate

the endogeneity between language and earnings international analyses this study is concerned with the determinants of dominant language fluency its effects on earnings and its endogeneity with earnings among immigrants dominant language fluency is hypothesized to

leasing lemons and moral hazard abstract a number of recent papers have analyzed leasing in the new car market as a response to the adverse selection problem in the used car market originally explored in the seminal 1970 paper by george akerlof in this paper we consider a model characterized by both adverse selection as in these earlier papers and moral hazard concerning the maintenance choices of new car drivers we show that this approach provides explanations for a number of empirical findings concerning real world new and used car markets including that leasing has become more popular over time very high income new car drivers lease more and used cars that were leased when new sell for more than used cars that were purchased when new we also compare and contrast our approach to new car leasing with alternative approaches

language fluency and earnings estimation with misclassified language indicators we use panel data to analyze the determinants of speaking fluency and wages of immigrants our model takes account of two problems that may bias ols estimates of the impact of speaking fluency on earnings first subjective variables on an ordinal discrete scale such as self reported language ability can suffer from misclassification errors the model decomposes misclassification errors into a time persistent and a time varying component second the model accounts for correlated unobserved heterogeneity in language and earnings equation the main finding is that these two generalizations of the standard model both lead to substantial changes in the estimated effect of speaking fluency on earnings

resource based industry in boom downswing and liberalization mexico abstract mexico s oil windfall was advantageously later and smaller than that of most oil exporters but it was still absorbed too quickly inflation accelerated the exchange rate appreciated and diversification into competitive non oil tradeables like resource based industry rbi was retarded too much rbi investment was channelled through state enterprises whose performance deteriorated it relied heavily on the protected domestic market which fell short of projections excess capacity and inadequate revenues then made rbi vulnerable as mexico rapidly liberalized its economy in the late 1980s

adverse selection in the used car market evidence from purchase and repair patterns in the consumer expenditure survey we analyze adverse selection in the used car market using a new approach that considers a car as an assemblage of parts some with symmetric information and others with asymmetric information using data from the consumer expenditure survey and consumer reports we examine turnover and repair patterns we find evidence of adverse selection due to the conditions of the transmission engine and during colder months air conditioning and sorting due to the conditions of the vehicle body and during warmer months air conditioning our quantification exercises indicate that adverse selection may have a meaningful effect on trade volume and quality in the secondhand market

ethnic enclaves and the economic success of immigrants evidence from a natural experiment recent immigrants tend to locate in ethnic enclaves within metropolitan areas the economic consequence of living in such enclaves is still an unresolved issue we use an immigrant policy initiative in sweden when government authorities distributed refugee immigrants across locales in a way that may be considered exogenous this policy initiative provides a unique natural experiment which allows us to estimate the causal effect on labor market outcomes of living in enclaves we find substantive evidence of sorting across locations when sorting is taken into account living in enclaves improves labor market outcomes for instance the earnings gain associated with a standard deviation increase in ethnic concentration is in the order of four to five percent

immigrating to opportunity estimating the effect of school quality using a natural experiment on ethiopians in israel in may 1991 fifteen thousand ethiopian jews were brought to israel in an overnight airlift and sorted in a haphazard and essentially random fashion to absorption centers across the country this quasi random assignment produced a natural experiment whereby the initial schooling environment of ethiopian children can be considered exogenous to their family background and parental decisions we examine the extent to which the initial elementary school environment affected the high school outcomes of ethiopian children using administrative panel data on the educational career of each child in israel through much of the 1990s the results show that the early schooling environment has an important effect on high school dropout rates repetition rates and the passing rate on matriculation exams necessary to enter college the results are robust to using alternative measures of the schooling environment and to the inclusion of community fixed effects which suggests that aspects of the elementary school itself are important for high school success

ethnic concentration and language fluency of immigrants evidence from the guest worker placement in germany this paper analyses the impact of regional ethnic concentration on the language proficiency and language use of immigrants it solves the endogeneity of immigrants location choices by exploiting a peculiar episode of the german immigration history the exogenous placement of guest workers after wwii one of the largest guest worker programs on record the econometric approach accounts for several sources of measurement error and provides a falsification exercise that hypothetically relocates the most language proficient immigrants into ethnic enclaves to test the extent of cross regional sorting necessary to render the results purely spurious the results show a robust negative effect of ethnic concentration on immigrants language ability which is driven by differences in contact rates with natives and not by differences in the willingness to integrate the paper discusses these findings against the background of a language production function and in the light of feasible policy options to foster the language acquisition of immigrants

adverse selection in durable goods markets we present a dynamic model of adverse selection to examine the interactions between new and used goods markets we find that the used market never shuts down the volume of trade can be large and distortions are lower than previously thought new cars prices can be higher under adverse selection than in its absence an extension to several brands that differ in reliability leads to testable predictions of the effects of adverse selection unreliable brands have steeper price declines and lower volumes of trade we contrast these predictions with those of a model where brands physically depreciate at different rates

ethnic enclaves and immigrant earnings growth the impact of living in an ethnic enclave on earnings growth of immigrants in canada is examined using the 1981 2001 censuses consistent with u s findings enclaves are found to have a negative impact on the earnings growth of male immigrants a negative impact is also found for female immigrants living in an enclave was found to be particularly harmful for individuals immigrating as adults especially for females but did not affect immigrants who arrived at a young age enclaves had a more negative impact on high skilled male immigrants especially if they had received the bulk of their education outside canada enclaves were also found to hinder language skills l impact du fait de vivre dans une enclave ethnique sur la croissance des gains des immigrants au canada est analysea l aide des donnees de recensements de 1981 a 2001 en concordance avec les resultats des etudes americaines on decouvre que les enclaves ont un effet negatif sur la croissance des gains des hommes immigrants il y a aussi un impact negatif sur la croissance des gains des femmes immigrantes vivre dans une enclave est particulierement dommageable pour les personnes qui immigrent au stade adulte et ce particulierement pour les femmes les effets negatifs ne se font pas sentir sur les immigrants qui arrivent en bas ge les enclaves ont un effet davantage negatif pour les hommes immigrants hautement qualifies en particulier s ils ont recu le gros de leur education hors du canada on montre que de vivre en enclaves retarde le developpement d habiletes langagieres