the free cash flow hypothesis for sales growth and firm performance business is business and business must grow dr seuss the lorax the paper investigates the agency argument that sales growth in firms with free cash flow and without strong governance is less profitable than sales growth for firms without free cash flow it also tests whether strong governance conditions improve the performance of firms with free cash flow and or limit the investments in unprofitable sales growth consistent with agency theory firms with free cash flow gain less from sales growth than firms without free cash flow but different governance conditions affect sales growth and performance in different ways having substantial management stock ownership mitigates the influence of free cash flow on performance despite allowing higher sales growth in contrast outside blocks held by mutual funds reduce sales growth substantially but does not increase performance from sales growth copyright 2000 john wiley sons ltd

intra household allocation of time and money across siblings abstract how work and consumption are allocated within the family has important consequences for the welfare of individual household members using data on time use and assignable goods for individual siblings across india peru ethiopia and vietnam aged 5 17 i show that there is substantial within sibling variation in leisure as well as consumption allocations i then test whether there is evidence for favoritism in the joint allocation of leisure and consumption toward a particular gender i find that boys with a younger sister have substantially more relative leisure compared to girls with a younger sister in all four countries consumption allocations are relatively higher for older siblings of mixed gender sibling pairs irrespective of the sex of the child i reject that favoritism in consumption equals favoritism in leisure in three of the four countries finally i show suggestive evidence on the role of reward and preferences for allocations of time and money in the household

sources of intra industry wage dispersion how much do employers matter observed human capital explains less than half of wage variation in bls industry wage surveys establishment based wage differentials controlling for occupation account for 20 70 percent of intra industry wage variation this corresponds to a standard deviation in wages of 14 percent of the mean almost as large as interindustry wage variation investigation suggests that establishment wage differentials are not random variations or returns to usual measures of human capital

does family income matter for schooling outcomes using adoptees as a natural experiment one would expect that family income is an important positive factor in children s school attainment however evidence is often tainted by the lack of control for parental ability since at least a portion of ability is transferred genetically to children this paper uses a sample of adopted children and offers genetically unbiased estimates we further correct for biases arising from unobserved parenting qualities and from parents differentiation between their own birth and adopted children family income still has a significant effect it implies that high ability children in low income families face binding credit constraints that society may wish to relieve

correlations of brothers earnings and intergenerational transmission correlations between parent and child earnings reflect intergenerational mobility and more broadly correlations between siblings earnings reflect shared community and family background these earnings relationships capture important aspects of relations in socioeconomic status more generally we estimate intergenerational transmission and sibling correlations of life cycle earnings jointly within a unified framework that nests previous models using data on the danish population of father first son second son triads we find that intergenerational effects account for on average 72 percent of sibling correlations this share is higher than all previous studies because we allow for heterogeneous intergenerational transmission between families sibling correlations exhibit a u shape over the working life consistent with differences in human capital investments between families

sources of superior performance market share versus industry effects in the u s brewing industry using financial measures of performance we investigate the sources of value creation in the u s brewing industry between 1969 and 1979 we find that market share gains in this industry at this time are not correlated with changes in value and that the performance of individual leading firms is highly correlated our interpretation is that the success of market share building strategies depends critically on specific industry conditions specifically in the absence of fundamental shifts in the relative resource positions of individual firms share gains may come at too high a price in addition the research shows that intra industry correlations in returns may result from excessive competition rather than collusion

the impact of foreign board membership on firm value abstract this study examines the effect of foreign anglo american board membership on corporate performance measured in terms of firm value tobin s q using a sample of firms with headquarters in norway or sweden the study indicates a significantly higher value for firms that have outsider anglo american board member s after a variety of firm specific and corporate governance related factors have been controlled for we argue that this superior performance reflects the fact that these companies have successfully broken away from a partly segmented domestic capital market by importing an anglo american corporate governance system such an import signals a willingness on the part of the firm to expose itself to improved corporate governance and enhances its reputation in the financial market

on decomposing the wage gap a critical comment on blinder s method many studies have found that the impact of schooling on earnings is greater for females than for males despite the fact that females tend to earn less both absolutely and controlling for personal characteristics this study investigates possible

how financial literacy affects household wealth accumulation this study isolates the causal effects of financial literacy and schooling on wealth accumulation using a new household dataset and an instrumental variables iv approach financial literacy and schooling attainment are both strongly positively associated with wealth outcomes in linear regression models whereas the iv estimates reveal even more potent effects of financial literacy they also indicate that the schooling effect only becomes positive when interacted with financial literacy estimated impacts are substantial enough to imply that investments in financial literacy could have large wealth payoffs

the heterogeneous dynamics between growth and profits the case of young firms while there is an increasing interest in the literature about the relationship between profits and business growth the empirical evidence is mixed and inconclusive this can be explained by the difficulty of fully addressing the complex nature of this relationship building on resource based and evolutionary considerations the present study investigates the dynamics between growth and profits of young firms by explicitly considering the endogeneity and heterogeneity aspects of the relationship data are based on a cohort of spanish manufacturing firms tracked during the period 1996 2010 the results indicate that young firm growth has a positive impact on profits in contrast the effect of profits on growth is not significant neither is there a significant correlation between past and current growth importantly we find that the results are strongly influenced by inter firm heterogeneity implications from these findings are discussed

primary schooling cognitive skills and wages in south africa using a fairly rich data set from south africa the paper finds that despite the sobriquet gutter education the african schooling systems help to create cognitive skills and these skills are a determinant of wage levels various robust estimators are used but the influential outlier problem does not turn out to be serious computational skills appear to be more important than comprehension skills in influencing wages the african primary schooling system was an extremely poor generator of computational skill the seven year course raising the computational test score by 13 if that a policy implication is that productivity could be raised by certain near costless reallocations of resources in favour of mathematical learning

alcohol availability prenatal conditions and long term economic outcomes this study examines how a policy that sharply increased alcohol availability during 8 5 months affected the labor productivity of those exposed to it in utero compared to the surrounding cohorts the prenatally exposed children have substantially worse labor market and educational outcomes and lower cognitive and noncognitive ability effects on earnings are found throughout the distribution but are largest below the median males are more affected than females consistent with growing evidence that boys are less resilient to early environmental insults the long term effects seem primarily driven by changes in prenatal health rather than changes in the childhood environment

does increasing women s schooling raise the schooling of the next generation the positive cross sectional relationship between the schooling of mothers and their children is substantially biased upward due to correlations between schooling and heritable ability as well as assortative mating an increase in the schooling of women would not have beneficial effects in terms of the schooling of children increased maternal schooling leads to reduced home time for mothers anticipating the consequences of investing in women s schooling requires attention to the role that schooling plays in the marriage market as well as to opportunities in the labor market for women

environment health and human capital in this review we discuss three major contributions economists have made to our understanding of the relationship between the environment and individual well being first in explicitly recognizing how optimizing behavior particularly in the form of residential sorting can lead to nonrandom assignment of pollution economists have employed a wide range of quasi experimental techniques to develop causal estimates of the effect of pollution second economic research has placed a considerable focus on the role of avoidance behavior which is an important component for understanding the difference between biological and behavioral effects of pollution and for proper welfare calculations lastly economic research has expanded the focus of analysis beyond traditional health outcomes to include measures of human capital including labor supply productivity and cognition our review of the quasi experimental evidence on this topic suggests that pollution does indeed have a wide range of effects on individual well being even at levels well below current regulatory standards given the importance of health and human capital as an engine for economic growth these findings underscore the role of environmental conditions as an important factor of production jel i12 i31 j24 q51 q53

do education and income really explain inequalities in health applying a twin design we apply a twin design to examine the relationship between health and education andincome the estimated associations between health and education and income controlling forunobserved endowments

the determinants of earnings a behavioral approach we survey the determinants of earnings and propose a framework for understanding labor market success we suggest that the advantages of the children of successful parents go considerably beyond the benefits of superior education the inheritance of wealth or the genetic inheritance of cognitive ability we suggest that noncognitive personality variables such as attitudes towards risk ability to adapt to new economic conditions hard work and the rate of time preference affect both earning and the transmission of economic status across generations

productivity health and inequality in the intrahousehold distribution of food in low income countries a model is formulated incorporating linkages among nutrition labor market productivity health heterogeneity and the intrahousehold distribution of food and work activities in a subsistence economy empirical results based on a sample of households from bangladesh indicate that despite considerable intrahousehold disparities in calorie consumption households are averse to inequality furthermore consistent with the model the results also indicate that both the higher level and greater variance in the calories consumed by men relative to women reflect in part the greater participation by men in activities in which productivity is sensitive to health status copyright 1990 by american economic association

unobservable effects and business performance while unobservable factors such as corporate culture access to scarce resources management skill and luck can be postulated to be principal determinants of business success their effects are all but ignored in studies of business performance this study making use of the pims data base reports empirical evidence indicating that failure to control for unobservable factors influencing profitability both biases and exaggerates the effect of strategic factors indeed the influence of unobservable factors is so pervasive as to invalidate many of the conclusions drawn from studies failing to control for their effects

schooling search and spouse selection testing economic theories of marriage and household behavior the implications of the economic theories of marriage and of household fertility behavior are tested in a framework in which educational investment marital search and marital matches are responsive to marriage market conditions and the personal traits of individual agents some of which are unobserved by the econometrician implications are also derived and tested for the effects of longevity attractiveness preferences and labor and marriage market conditions on schooling marriage age and spouse choice the empirical results indicate that inattention to heterogeneity and martial selection leads to a false rejection of the economic theory of marriage but to a false acceptance of the value of time fertility hypothesis

evidence on the validity of cross sectional and longitudinal labor market data this article investigates error properties of survey reports of labor market variables we use the panel study of income dynamics psid validation study a two wave panel survey of workers employed by a large firm that shared its detailed payroll records individuals reports of annual earnings are fairly accurate errors are negatively related to true earnings reducing bias due to measurement error when earnings are used as an independent variable biases are moderately larger for changes in earnings earnings per hour are less reliably reported than annual earnings biases in estimating earnings functions are relatively small but those in labor supply functions may be important

estimating the intrahousehold incidence of illness child health and gender inequality in the allocation of time in this paper the authors develop and implement a method for estimating the effects of infant morbidity on the differential allocation of time of family members based on discrete indicators of health and activity participation commonly available in survey data and within the context of a household model in which health is determined endogenously their estimates that take into account the simultaneity of health activity associations indicate that increased levels of infant morbidity significantly exacerbate existing differentials in the accumulation of human capital across teenage boys and girls in indonesia copyright 1990 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

heterogeneous preferences compensating wage differentials and comparable worth this paper sets up a general equilibrium model of a world of heterogeneous jobs and heterogeneous tastes and uses the model to i analyze the effects of employer discrimination and ii predict the likely consequences of requiring equal pay for jobs of comparable worth it shows that employment of both women and men is likely to fall as a result of comparable worth it also shows that when individuals tastes are heterogeneous neither comparable worth nor the simple model of compensating differentials on which it is based provides useful insights into wage determination in particular when tastes are heterogeneous there is no reason to expect equal pay for jobs of comparable worth even in the absence of employer discrimination

the effects of family characteristics on the return to education in this paper the authors examine the role of parental education in the human capital production function by estimating the effects of parental education on the education profile of wages the analysis uses sibling pairs from the panel study of income dynamics and the national longitudinal surveys of labor market experience of young men and young women the authors obtained mixed evidence on whether parental education raises the return to education copyright 1996 by mit press

estimating returns to education using twins in urban china abstract this paper empirically estimates the return to education using twins data that the authors collected from urban china our ordinary least squares estimate shows that one year of schooling increases an individual s earnings by 8 4 if we use a within twin fixed effects model the return is reduced to 2 7 but rises to 3 8 after the correction of measurement error these results suggest that a large portion of the estimated returns to education is due to omitted ability or the family effect we further investigate why the true return is low and the omitted ability bias high and find evidence showing that it may be a consequence of china s education system which is highly selective and exam oriented more specifically we find that high school education may mainly serve as a mechanism to select college students but as a human capital investment per se it has low returns in terms of earnings in contrast both vocational school education and college education have a large return that is comparable to that found in the united states

education gender gaps in pakistan is the labor market to blame abstract differential labor market returns to male and female education are one potential explanation for large gender gaps in education in pakistan we empirically test this explanation by estimating private returns to education separately for male and female wage earners this article contributes to the literature by using a variety of methodologies ordinary least squares heckman correction two stage least squares and household fixed effects in order to estimate economic returns to education the latest nationally representative data the pakistan integrated household survey 2002 are used earnings function estimates consistently reveal a sizable gender asymmetry in economic returns to education with returns to women s education being substantially and statistically significantly higher than men s the return to an additional year of schooling ranges between 7 and 11 for men and between 13 and 18 for women there are also large direct returns to women s education at low levels of schooling

how unequally has equal pay progressed since the 1970s a study of two british cohorts this paper compares the gender gap in the pay of british full time workers from two cohorts born in 1946 and 1958 and observed in their early thirties in 1978 and 1991 respectively these dates are separated by 13 years of equal pay legislation coupled with active labor market deregulation although women s human capital endowments had improved on average more than men s there may have been little improvement in the differential treatment of the average woman in full time employment when the whole distribution of female earnings was considered a general improvement in the treatment of women became apparent

wage and labor supply effects of illness in cote d ivoire and ghana instrumental variable estimates for days disabled abstract sickness should make individuals less productive but there are problems in measuring this effect first how is adult morbidity measured in a household survey second how is the impact or morbidity on productivity inferred if earning is partly used to improve health self reported functional activity limitation due to illness is considered an indicator of morbidity for wage earners and self employed people to deal with both the measurement and joint determination problems an instrumental variable estimation approach is used where local food prices and health services instrument for disability days that reduce wages by at least 10 and hours by 3 or more

the cultural revolution and returns to schooling in china estimates based on twins abstract this paper investigates the returns to schooling in china for the cultural revolution cr cohort and the non cr cohort using a new set of chinese twins data applying the fixed effects model on twins data which helps to control for the genetic and family background effects this paper examines whether the cr cohort has smaller economic returns to schooling than the non cr cohort the empirical results in this paper indicate that the cultural revolution has not played a significantly adverse role in the returns to schooling

why does spousal education matter for earnings assortative mating and cross productivity spousal education is correlated with earnings for two reasons cross productivity between couples and assortative mating this article empirically disentangles the two effects by using chinese twins data we have two innovations using twins data to control for the unobserved mating effect in our estimations and estimating both current and wedding time earnings equations we find that both crossproductivity and mating are important in explaining the current earnings although the mating effect exists for both husbands and wives the cross productivity effect mainly runs from chinese husbands to wives our findings shed light on the theories of human capital marriage and the family

estimating the economic return to educational levels using data on twins this paper relaxes some restrictions of previous twin based estimates of the effects of education on earnings first it estimates the earnings premiums associated with different educational levels second it estimates a piecewise linear relationship between the natural logarithm of annual earnings and years of schooling third the measurement error corrections are based on a less restrictive non classical measurement error model the estimation strategy implies that ability bias can be investigated separately in different parts of the educational distribution the linear relationship between the logarithm of annual earnings and years of schooling is rejected furthermore the results in the sample of identical mz twins indicated both that the ability bias could be of different signs and of different magnitudes in different parts of the educational distribution the twin based estimates in the sample of fraternal dz twins did not display any marked differences as compared to the cross sectional estimates finally the results indicated that the error corrected twin based estimates of the average return to years of schooling that rely on a classical measurement error model are upwards biased by approximately 30 copyright 2004 john wiley sons ltd

endogenous altruism theory and evidence from chinese twins this paper studies the endogenous formation of intersibling altruism the theory suggests that parental incentive to foster children s fraternal love is positively related to efficiency gains from

parental preference heterogeneity and human capital inequality abstract in this article i provide an empirical account of the human capital investment behavior of parents in the face of endowment differences among siblings the data set used contains a three wave panel of 4 030 individuals the article presents a rare case in which endowments are measured explicitly health endowments are estimated from dynamic health production functions while educational endowments are obtained from test scores the simple score of the standard raven s colored progressive matrix cpm test is used to measure educational endowments i use estimation procedures that combine an instrumental variables method with panel data estimators to control for endogeneity and heterogeneity the results suggest that parents compensate for initial differences in health but reinforce initial educational differences among siblings hence an educational subsidy aimed at reducing inequality may end up reinforcing the inequality that might exist in the absence of such subsidy when parents invest mor

astronomics in action the graduate earnings premium and the dragon effect in singapore white u s and latin american currencies portray images of national independence heroes singapore s 2 dollar bill the most widely circulated since there is no smaller denomination shows students in a classroom listening to a professor with a university in the background underneath there is just one word education singapore s obsession with education miami herald 8 september 2009 i introduction since the groundbreaking work of mincer 1974 many academics have looked closely at the question of what the return to education might be 1 however because of the lack of data the literature does not have much to say about singapore even though a lot of research has been done for advanced countries throughout the world 2 3 in this paper we employ a recent survey from the singapore national youth council to study one aspect of this topic the return to university education in singapore having a university education is usually perceived to be good for one s career although the extent to which this is true has been a constant point of contention 4 this debate had relied largely on anecdotes instead of econometric research understandably so because data is not easily available therefore this paper hopes to offer some evidence on the causal link between university education and earnings outcome in singapore however identification is a formidable challenge as in any research that aims to estimate the return to education although the positive association between education and earnings is a virtually ubiquitous fact prima facie evidence of income gaps may misrepresent what the true return to education is because individuals tend to make educational choices according to their abilities such income gaps would contain not only the return that is due to education the quantity of interest but also the return on unobserved abilities which is the confounding effect over the years economists have sought to disentangle the causal effect of education from the confounding effect of unobserved abilities in the data but the existing estimation approaches are not easily adaptable here for example methods that employ within twin comparisons or changes in compulsory schooling laws cannot be implemented owing to data limitations and the lack of important schooling reforms in singapore 5 in fact the dataset used here was compiled for a different purpose than economics which is to provide a better understanding of singapore s youths from a sociological perspective given these issues a new estimation approach has to be considered in this paper we propose to exploit a consequence li liu and zhang 2012 of chinese traditions generating the so called dragon effect to study the causal link between university education and income in singapore chinese is the largest ethnic group and malays indians and eurasians are the main ethnic minorities according to chinese traditions there are 12 creatures in the chinese zodiac where each represents a lunar year in a 12 year cycle among them the dragon is the most auspicious creature and babies born in a dragon year are believed to be superior 6 because of this conviction the dragon year has seen upswings in the rate of birth not just in singapore but also in places where chinese culture is prevalent 7 for example figure 1 plots the birth rate from 1970 in singapore based on resident women aged between 15 and 49 8 while the fertility rate was plunging early on it did increase momentarily during the dragon year of 1976 there was another sharp increase in 1988 9 and then in 2000 which marks the highly auspicious year of the golden dragon figure 1 omitted the positive relationship between the birth rate and the dragon year provides the rationale behind the identification strategy used here as the dragon cohort is larger than usual competition for entry into university would be more intense leading to what is known as the dragon effect

is schooling mostly in the genes nature nurture decomposition using data on relatives we modify r a fisher s model by incorporating measures of the environment that may be correlated across kin groups we estimate a model of schooling attainment using data on eight kin groups and find a large contribution of genetic endowments to the variance in schooling though certain aspects of the environment matter

genetic variation in financial decision making individuals differ in how they construct their investment portfolios yet empirical models of portfolio risk typically account only for a small portion of the cross sectional variance this paper asks whether genetic variation can explain some of these individual differences following a major pension reform swedish adults had to form a portfolio from a large menu of funds we match data on these investment decisions with the swedish twin registry and find that approximately 25 of individual variation in portfolio risk is due to genetic variation we also find that these results extend to several other aspects of financial decision making

swinging a double edged sword the effect of slack on entrepreneurial management and growth resource slack represents a double edged sword simultaneously fueling and hindering growth drawing on penrose s growth theory and stevenson s entrepreneurial management theory we have developed and tested a conceptual model that provides a more nuanced account of the resource slack growth relationship using a large dataset spanning six years we have found that slack has a positive direct effect on growth but a negative effect on entrepreneurial management and that entrepreneurial management has a positive effect on growth our empirical and conceptual findings are important to the development of firm growth theory and explicate causal mechanisms transforming slack into firm level outcomes

estimates of the economic returns to schooling from a new sample of twins this paper uses a new survey to contrast the wages of genetically identical twins with different schooling levels multiple measurements of schooling levels were also collected to assess the effect of reporting error on the estimated economic returns to schooling the data indicate that omitted ability variables do not bias the estimated return to schooling upward but that measurement error does bias it downward adjustment for measurement error indicates that an additional year of schooling increases wages by 12 to 16 percent a higher estimate of the economic returns to schooling than has been previously found copyright 1994 by american economic association

where has all the education gone cross national data show no association between increases in human capital attributable to the rising educational attainment of the labor force and the rate of growth of output per worker this implies that the association of educational capital growth with conventional measures of total factor production is large strongly statistically significant and negative these are on average results derived from imposing a constant coefficient however the development impact of education varied widely across countries and has fallen short of expectations for three possible reasons first the institutional governance environment could have been sufficiently perverse that the accumulation of educational capital lowered economic growth second marginal returns to education could have fallen rapidly as the supply of educated labor expanded while demand remained stagnant third educational quality could have been so low that years of schooling created no human capital the extent and mix of these three phenomena vary from country to country in explaining the actual economic impact of education or the lack thereof

rates of return to four year university education an application of regression discontinuity design estimating the rate of return to university education is invariably difficult due to the problem of omitted variable bias using a regression discontinuity design we estimate the effect of four year university education on earnings and explore the pathways through which the effect operates our estimation exploits the centralized score based college university admission system in china where the minimum scores required for university admission are externally determined by the provincial governments our findings suggest that being eligible for four year university admission implies a sizable increase in earnings with the payoff being attributable to prolonged length of education and improvements in education quality although the quality effects may not be precisely estimated this article is protected by copyright all rights reserved

income schooling and ability evidence from a new sample of identical twins we develop a model of optimal schooling investments and estimate it using new data on approximately 700 identical twins we estimate an average return to schooling of 9 percent for identical twins but estimated returns appear to be slightly higher for less able individuals simple cross section estimates are marginally upward biased these empirical results imply that abler individuals attain more schooling because they face lower marginal costs of schooling not because of higher marginal benefits

how large are the effects from changes in family environment a study of korean american adoptees i analyze a new set of data on korean american adoptees who were quasi randomly assigned to adoptive families i find large effects on adoptees education income and health from assignment to parents with more education and from assignment to smaller families parental education and family size are significantly more correlated with adoptee outcomes than are parental income or neighborhood characteristics outcomes such as drinking smoking and the selectivity of college attended are more determined by nurture than is educational attainment using the standard behavioral genetics variance decomposition i find that shared family environment explains 14 percent of the variation in educational attainment 35 percent ofthe variation in college selectivity and 33 percent of the variation in drinking behavior

the taste for leisure career choice and the returns to education abstract we develop a simple methodology to estimate the returns to education despite heterogeneous labor leisure preferences the labor supply behavior of doctors and physician assistants is consistent with people choosing between the two careers based on differing tastes for leisure

the growth effects of education in australia in this article we estimate the growth effect of human capital with country specific time series data for australia in doing so we extended the solow 1956 growth model by using educational attainment as a measure of human capital developed by barro and lee 2010 the extended solow 1956 model performs well after allowing for the presence of structural changes our results based on alternative time series methods show that educational attainment has a small and significant permanent effect on the growth rate of per worker output in australia

returns to education evidence from u k twins we use a new sample of uk female identical twins to estimate private economic returns to education we report findings in three areas first we use identical twins to control for family effects and genetic ability bias and the education reported by the other twin to control for schooling measurement error our estimates suggest a return to schooling for uk females of about 7 7 second we investigate within twin pair ability differences by examining within twin pair and between family correlations of education with observable correlates of ability including birthweight ability tests and reading scores our findings suggest lower ability bias in within twin pair regressions than pooled regressions third using data on twins smoking we show smoking reflects family background and using it as an instrument exacerbates ability bias this abstract was borrowed from another version of this item

a comparison of the labor force behavior of married women in the united states and canada with special attention to the impact of income taxes estimation results are presented for the probability of working the hourly wage rate and the annual hours of work for wives in seven different age groups in both the u s and canada federal and state or provincial taxes are incorporated into the analysis an iterative estimation method is employed to circumvent the statistical problems resulting from the dependence of the hours of work on the tax rate and the dependence of the tax rate on the hours of work authors

using unemployment rates as instruments to estimate returns to schooling i use state unemployment rates during a person s teenage years to estimate the returns to schooling a higher unemployment rate reduces the opportunity costs of attending school using the same 1980 census data set that angrist and krueger 1991 use i also estimate returns to schooling with a modified version of their quarter of birth instrument the estimates from the two stage least squares 2sls model using the unemployment rate and the model using the quarter of birth instruments are almost identical in addition these 2sls estimates are larger than the ordinary least squares ols estimates supporting this counterintuitive yet prevalent result in the literature

africa s education enigma the nigerian story abstract in the last two decades the social and economic benefits of formal education in sub saharan africa have been debated anecdotal evidence points to low returns to education in africa unfortunately there is limited econometric evidence to support these claims at the micro level in this study i focus on nigeria a country that holds 1 5 of africa s population i use instruments based on the exogenous timing of the implementation and withdrawal of free primary education across regions in this country to consistently estimate the returns to education in the late 1990s the results show the average returns to education are particularly low in the 90s in contrast to conventional wisdom for developing countries 2 8 for every extra year of schooling between 1997 and 1999 surprisingly i find no significant differences between ols and iv estimates of returns to education when necessary controls are included in the wage equation the low returns to education results shed new light on both the changes in demand for education in nigeria and the increased emigration rates from african countries that characterized the 90s

high quality nutrition in childhood body size and wages in early adulthood evidence from guatemalan workers espanolcausalidad entre salud y productividad no resulta directa de establecer por un lado mayores ingresos pueden trasladarse en una dieta de mejor calidad por el otro es probable que un trabajador saludable sea mas productivo este trabajo analiza el efecto del tamano corporal altura e indice de masa corporal como indicadores de nutricion en salarios los datos provienen del estudio longitudinal realizado en guatemala entre 1969 77 y 2002 04 estimaciones sugieren que la elasticidad tamano del cuerpo en relacion al salario aumenta cuando la heterogeneidad no observable es considerada sin embargo los resultados son mas robustos para los hombres adicionalmente la elasticidad estimada presenta algun grado de disparidad entre quantiles de la distribucion condicional del salario englishestablishing a causal relationship between health and productivity is not straightforward on one hand as income grows people invest in better diets on the other a healthier worker is likely to be more productive this paper focuses on the effect of body size height and body mass index as indicators of nutrition upon wages data comes from a longitudinal study conducted in guatemala during 1969 77 and followed up in 2002 04 body size elasticity increases when unobserved heterogeneity is considered although evidence is stronger for males additionally estimated elasticity shows some degree of heterogeneity at different quantiles of the conditional wage distribution

educational choice families and young people s earnings this paper presents two optimizing models of educational choice discusses issues of identification estimates earnings equations in the context of these models and presents conditions under which we can test one against the other the estimates indicate that education is endogenous for young people s earnings creating a downward bias in estimated returns from education that assume exogeneity identification and estimation relies on family background information from a special sample from the british household panel study 1991 95 which matches mothers and their young adult children our estimates favor a family model over an individual model and they suggest that parents allocate resources to education to compensate for differences in their children s earnings endowments

accounting for the gender gap in college attainment i introduction one striking phenomenon in the u s labor market is the reversal of the gender gap in college attainment in 1980 57 of young men aged 25 34 compared with 46 of young women had some college education by age 34 by 1996 however female college attainment had reached 64 5 percentage points higher than that of the males in the same cohort in tact females overtook males in college attainment in 1987 and have led ever since a large body of empirical research emphasizes the role of the earnings premium as a key explanatory variable for the determination of education outcomes see e g becket 1967 mincer 1974 willis and rosen 1979 in addition an extensive literature shows that family background is an important determinant of the schooling decision see among others cameron and heckman 1998 2001 eckstein and wolpin 1999 ge 2008 kane 1994 recently several papers have argued empirically and theoretically that expected marriage is important in determining the schooling decision e g chiappori iyigun and weiss 2006 ge 2008 iyigun and walsh 2007 on the basis of this literature we construct a life cycle model that includes potential costs and benefits from the labor market and marriage market which determine individual college decisions in our model individuals with differing learning abilities first decide whether or not to enter college then they might get married and have children parents are altruistic and value their children s learning ability which increases with the parents education forward looking individuals take into account the impact of their own schooling on their children s learning ability other factors that affect an individual s decision on whether to pursue higher education include the expected direct labor market returns to college over one s lifetime the expected marriage market returns to college and the financial and effort costs of attending college these costs and benefits can differ by gender we calculate from panel study of income dynamics psid and current population survey cps parents education distributions the life cycle profiles of single marriage and divorce probabilities by education and the lifecycle profiles of earnings by education and marital status as exogenous inputs of the model we observe that the number of college educated parents increases over time in the marriage market a substantial increase of single probabilities and an increase of divorce probabilities has occurred for both genders regardless of college attainment status lifetime earnings by cohort are decreasing slowly for males of all marital statuses especially for married males lifetime earnings for married and divorced females are increasing gradually whereas those for single females are decreasing slightly to formally endogenize those changes is beyond the scope of our paper we instead focus on the mechanism in which under perfect foresight these changes affect education decisions we estimate the parameters of the model by matching data on college attainment by gender from the psid we present evidence on how well the model fits the data we then use the parameter estimates to simulate counterfactual experiments which break down the sources of changes in college attainment into the effects of changes in relative earnings changes in parental education and changes in the marriage market what accounts for the increase in college attainment over the past few decades we find that the increasing gap in earnings between college and high school graduates has important effects on the increase in college attainment for both genders when earnings are fixed at 1946 cohort levels attainment rates in 1996 drop by 15 5 and 14 2 percentage points for males and females respectively we also emphasize the importance of intergenerational persistence in schooling on the increase in college attainment for both genders

agricultural spillover effects of cash transfers what does lewie have to say lewie simulations suggest that there are positive production spillovers fromsctprograms in nominal terms total production multipliers are always significantly greater than zero and income multipliers are always greater than one however real impacts depend on supply elasticities and market closure assumptions to date studies do not point to inflationary impacts of scts opm 2012a opm 2012b although the evidence on price effects is very limited this suggests that simulation 2 best characterizes the production impacts of scts which target poor economies with under utilized factors this simulation reveals a minimal inflationary impact and real production value added multipliers of 1 58 ksh per shilling transferred a key finding of lewie is that the production impacts are concentrated in nonbeneficiary households this is not surprising given the program s eligibility criteria which target the most asset and labor constrained households rcts focusing on treated households are likely to miss many or most of the productive impacts of social cash transfer programs this finding reaffirms the importance of a local economy wide approach if we wish to capture the transfers full impact finally our findings underline the importance of local supply constraints in shaping the impacts of transfer programs in the high unemployment environment characterizing rural kenya we believe it unlikely that there are significant labor constraints on production nevertheless production constraints limit program benefits particularly in nonbeneficiary households which are far and away the main source of new supply when production bottlenecks generate inflation transfers may even negatively affect some households interventions focusing on local production constraints in nonbeneficiary as well as beneficiary households may be needed to unlock the productive potential of scts

college choice and wages estimates using data on female twins the authors assess the impact of college quality on women s earnings and the influence of family and individual endowments on college choice using new data from a survey of identical and nonidentical twins born in minnesota the estimates reject models that ignore school choice the statistically preferred estimates suggest that ph d granting private universities with well paid senior faculty and smaller enrollments produce students who have significantly higher earnings later in life both the quantity of schooling and the quality of schooling resources are allocated to higher endowed individuals which exacerbates preexisting inequality in human capital and biases conventional estimates of school quality effects copyright 1996 by mit press

corporate performance and managerial remuneration an empirical analysis abstract economic theories of efficient compensation predict a positive relationship between executive pay and corporate performance and yet efforts to document this relationship have been largely unsuccessful in this paper we argue that previous cross sectional studies have omitted important variables which seriously bias their results using data that focus on individual executives over time we find that executive compensation is strongly positively related to corporate performance as measured by shareholder return and growth in firm sales the results are robust to the stock market performance measure utilized

what do twins studies reveal about the economic returns to education a comparison of australian and us findings conventional estimates of rates of return to education are constrained because they are unable to isolate the returns to schooling from the contribution of individual ability and the influence of family background potentially studies using a sample of twins may overcome these problems monozygotic twins are genetically identical and if they have been reared together share the same family background differences in income between identical twins can therefore be associated with differences in the amount of education they have undertaken in order to estimate the independent influence of education comparisons of such estimates with estimates made from a sample of dizygotic twins who are genetically similar but not identical and who are also reared together may permit evaluation of the biases associated with ability and family background in conventional estimates of the return to education in an important paper jere behrman et al 1977 analyzed data from a sample of male world war ii veteran twins and found that of the overall rate of return to schooling of 8 percent 2 7 percentage points could be attributed to schooling per se 3 2 percentage points could be attributed to genetic factors and 2 1 percentage points could be attributed to shared family environment in a recent paper however orley ashenfelter and alan krueger 1994 have estimated the economic returns to education using data on a new sample of twins which permitted them to adjust their estimate for omitted ability variables and measurement error on this basis they find that family and genetic effects make virtually no contribution to the returns to schooling measurement error however biases the estimated return to schooling downward the findings of ashenfelter and krueger 1994 are very different from previous work in this field and there is now some confusion as to what analysis of twins data really reveals about the economic returns to schooling ashenfelter and krueger s results are based on analysis of data for a sample of 298 individuals 149 pairs of identical twins who attended a twins festival in 1991 they remark at the end of their paper only additional data collection is likely to lead to better estimates of the returns to schooling p 1171

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

inequality within and between families between family differences in expenditures and output reflect the effect of simultaneous increases in children s ability on the willingness of parents to transfer resources to them within family differences also reflect the attitudes of parents toward disparity among children in this paper we characterize the conditions on parents preferences that determine whether between family differences exceed within family differences for additive utility within family differences in expenditures always exceed between family differences this may also be true for the max min utility function if an increase in ability reduces the marginal utility of income within family differences in output utility or income can also exceed between family differences in this case the implication for income distribution is that equality is enhanced by a higher correlation of ability between brothers

endowments and the allocation of schooling in the family and in the marriage market the twins experiment 03 we show how comparisons between the within twin correlations of human capital outcomes across identical and nonidentical twins can be used to identify the variability in the individual specific component of endowments and the responsiveness of schooling to individual specific endowments in the family and in the marriage market even when schooling is measured with error estimates from two twins samples indicate that 27 42 percent of the variance in log earnings obesity is due to variability in individual specific endowments allocations of schooling reinforce specific endowments and individual specific earnings endowments of men and their wives schooling are negatively associated

will a shrink make you richer gender differences in the effects of psychotherapy on labour efficiency this paper provides a first theoretical and empirical analysis of the effects of psychotherapy on individual productivity we build a simple model in which a deterioration of mental health endogenously causes a decrease in productivity which is counterbalanced by psychotherapy we test our hypotheses on the british household panel survey data we find that individuals suffering from mental health problems benefit economically from consulting a psychotherapist moreover we find that the returns are higher for men than for women even though women are more likely to seek help

estimating the economic return to schooling on the basis of panel data this paper is concerned with estimating the economic return to schooling of men in the netherlands an iv approach is adopted to estimate a panel data model with random individual effects the fact that older individuals have relatively less schooling than younger individuals is exploited to construct instruments and gnp per worker at the time an individual turned 16 is included to control for birth cohort effects the estimated return to schooling is about 15 ignoring the endogeneity of schooling results in a lower return to schooling ignoring birth cohort effects results in a lower return to work experience

do markets differ much this essay reports the results of a crosssection study of differences in accounting profitability that sheds light on some basic controversies in industrial economics most previous cross section studies in this field have been concerned with testing hypotheses about structural coefficients in models meant to apply to essentially all markets as we have learned more about the difficulties of constructing such general models and of performing tests on their structural parameters properly structural cross section analysis has fallen out of fashion in contrast to most of the cross section literature the analysis reported here is fundamentally descriptive it does not attempt directly to estimate or to test hypotheses about structural parameters i hope to show by example that one can perform illuminating analysis of cross section data without a host of controversial maintained hypotheses cross section data can yield interesting stylized facts to guide both general theorizing and empirical analysis of specific industries even if they cannot easily support full blown structural estimation one can view the sort of search for stylized facts conducted here as either a replacement for or an input to interindustry structural estimation depending on one s feeling about the long run potential of that research approach this study also departs from much of the cross section literature by being fundamentally concerned with the importance of various effects not just with coefficient signs and t statistics in particular this essay provides estimates of the relative importance of firm market and market share differences in the determination of business unit divisional profitability in u s manufacturing using 1975 data from the line of business program of the u s federal trade commission ftc i find support neither for the existence of firm effects nor for the importance of market share effects moreover while industry effects apparently exist and are important they appear to be negatively correlated with seller concentration in these data section i relates firm market and share effects to current issues and controversies in industrial economics and thus supplies the motivation for our empirical analysis the remainder of the essay treats the data and

birth weight and schooling and earnings estimates from a sample of twins based on analysis of a sample of twins this study suggests that birth weight is not related to levels of schooling that it plays only a minor role in the determination of earnings and that ability differences that are not removed in the within twins model of earnings are not biasing the results in twins studies such as ashenfelter and krueger ashenfelter o krueger a 1994 estimates of the economic return to schooling from a new sample of twins american economic review 84 5 pp 1157 1173 d 2004 elsevier b v all rights reserved

the equal pay act as an experiment to test theories of the labour market the uk equal pay act of 1970 resulted in a large rise in the relative earnings of women in the early 1970s as this change unlike most wage changes was largely exogenous to employers one can think of this episode as an experiment for testing different theories of the labour market hence study of the effects of the equal pay act should be given considerable weight and is likely to have wider implications about the operation of labour markets most models of the labour market used by economists assume that employment is demand determined at least after a large positive shock to the wage these models would predict that female relative employment should have fallen after the introduction of the equal pay act yet it is hard to find evidence of this this paper argues that female relative employment did not fall because the female labour market is in part monopsonistic

estimating the return to endogenous schooling decisions via conditional second moments this paper employs conditional second moments to identify the impact of education in wage regressions where education is treated as endogenous this approach avoids the use of instrumental variables in a setting where instruments are frequently not available we employ this methodology to estimate the returns to schooling for a sample of australian workers we find that accounting for the endogeneity of education in this manner increases the estimated return to education from 6 percent to 10 percent

natural natural experiments in economics the recent literature exploiting natural events as natural experiment instruments is reviewed to assess to what extent it has advanced empirical knowledge a weakness of the studies that adopt this approach is that the necessary set of behavioral market and technological assumptions made by the authors in justifying their interpretations of the estimates is often absent the methodology and findings from twenty studies are summarized and simple economic models are used to elucidate the implicit assumptions made by the authors and to demonstrate the sensitivity of the interpretations of the findings to the relaxation of some of these assumptions

what you don t know can hurt you or at least mislead you family behaviors unobserved heterogeneities and the determinants and impacts of human resources over the life cycle what one does not know in the form of unobserved heterogeneity can mislead one in empirical estimates a simple model of intrahousehold allocations illustrates the possible importance of unobserved factors such as abilities in determining human resources and their impacts the author reviews over forty years of studies primarily from latin america and the caribbean but also from elsewhere to illustrate the substantial empirical importance of unobserved heterogeneity with regard to preferences and intrahousehold allocations schooling returns school quality early life nutrition and program evaluation