natural groups and economic characteristics as driving forces of wage discrimination we investigate whether the origin of an employee provides different motives for wage discrimination in gift exchange experiments with students and migrant workers in china in a lab and an internet experiment subjects in the role of employers can condition their wages on the employees home provinces the resulting systematic differences in wages can be linked to natural groups and economic characteristics of the provinces in group favoritism increases wages for employees who share the same origin as the employer while an increased probability of being matched with an employee with a different ethnicity reduces wages furthermore wages in the laboratory increase with the actual wage level in the employees home province nevertheless employees effort is not influenced by these variables only the wage paid in the experiment influences effort

the impact of group membership on cooperation and norm enforcement evidence using random assignment to real social groups due to incomplete contracts efficiency of an organization depends on willingness of individuals to take non selfish actions such as cooperating when there is no incentive to do so or punishing inefficient actions by others organizations also constitute a social boundary or group we investigate whether this social aspect of organizations has an important benefit fostering unselfish cooperation and norm enforcement within the group but also whether there is a dark side in the form of hostility between groups our experiment provides the first evidence free from the confounding effect of self selection into groups individuals are randomly assigned to different platoons during a four week period of officer training in the swiss army we conduct choice experiments simultaneous prisoner s dilemma games with and without third party punishment in week three random assignment significantly increases willingness to cooperate with fellow platoon members assignment does not lead to hostility in the sense of vindictive punishment of outsiders but does affect norm enforcement enhancing willingness to enforce a norm of cooperation towards fellow platoon members this suggests that the social aspect of organizations motivates efficient behavior even when ordinary incentives fail and helps to explain practices designed to foster social ties or group identification within an organization this abstract was borrowed from another version of this item

fair wages and effort provision combining evidence from a choice experiment and a field experiment the presence of workers who reciprocate higher wages with greater effort can have important consequences for firms and labor markets knowledge about the extent and determinants of reciprocal effort choices is however incomplete we investigate the role of fairness perceptions and social preferences in a field experiment in which workers were hired for a one time job we show that workers who perceive being underpaid at the base wage increase their performance if the hourly wage increases whereas those who feel adequately paid or overpaid at the base wage do not change their performance moreover we find that only the workers who display reciprocity in a choice experiment show reciprocal effort responses in the field the workers who lack reciprocity in the choice experiment do not respond to the wage increase even if they feel underpaid at the base wage our findings suggest that fairness perceptions and social preferences are key in workers performance response to wage increases in our study the wage increase affects effort mainly through the removal of perceived unfairness i e the elimination of negative reciprocity toward the firm rather than positive reciprocity these results are the first direct evidence of the fair wage effort hypothesis in the field and also help interpret previous contradictory findings in the literature data as supplemental material are available at http dx doi org 10 1287 mnsc 2014 1970 this paper was accepted by uri gneezy behavioral economics

anonymous job applications of fresh ph d economists abstract this paper analyzes anonymous job applications of ph d economists in the academic job market we use data on interview invitations from a randomized experiment at a european based research institution results show that the underrepresented gender was hurt by anonymous applications

the role of natural gas consumption and trade in tunisia s output this paper examines the impact of natural gas consumption real gross fixed capital formation and trade on the real gdp in case of tunisia over the period of 1980 2010 we used auto regressive distributed lag ardl bounds testing approach to test the existence of long run relationship between the variables the vector error correction method vecm granger approach is applied to test the direction of causal relation between the series our findings indicate the existence of long run relationship among the variables natural gas consumption real gross fixed capital formation and trade add in economic growth natural gas consumption real gross fixed capital formation and real trade granger cause real gdp these findings open up new insights for policy makers to formulate a comprehensive energy policy to sustain economic growth for long run

fair wages and effort evidence from a field experiment the presence of workers who reciprocate higher wages with greater effort can have important consequences for firms and labor markets knowledge about the extent and determinants of reciprocal effort choices is however incomplete we investigate the role of fairness perceptions and social preferences in a field experiment in which workers were hired for a one time job we show that workers who perceive being underpaid at the base wage increase their performance if the hourly wage increases whereas those who feel adequately paid or overpaid at the base wage do not change their performance moreover we find that only the workers who display reciprocity in a choice experiment show reciprocal effort responses in the field the workers who lack reciprocity in the choice experiment do not respond to the wage increase even if they feel underpaid at the base wage our findings suggest that fairness perceptions and social preferences are key in workers performance response to wage increases in our study the wage increase affects effort mainly through the removal of perceived unfairness i e the elimination of negative reciprocity toward the firm rather than positive reciprocity these results are the first direct evidence of the fair wage effort hypothesis in the field and also help interpret previous contradictory findings in the literature

incentives and discrimination optimal incentive mechanisms may require that agents are rewarded differentially even when they are completely identical and are induced to act the same we demonstrate this point by means of a simple incentive model where agents decisions about effort exertion is mapped into a probability that the project will succeed we give necessary and sufficient conditions for optimal incentive mechanisms to be discriminatory we also show that full discrimination across all agents is required if and only if the technology has increasing return to scale in the non symmetric framework we show that negligible differences in agents attributes may result in major differences in rewards in the unique optimal mechanism this abstract was borrowed from another version of this item

forecasting the conditional volatility of oil spot and futures prices with structural breaks and long memory models this paper extends previous studies by investigating the relevance of structural breaks and long memory in modeling and forecasting the conditional volatility of oil spot and futures prices using a variety of garch type models our results can be summarized as follows first we provide evidence of parameter instability in five out of nine garch based conditional volatility processes for energy prices second long memory is effectively present in all the series considered and a figarch model seems to better fit the data but the degree of volatility persistence diminishes significantly after adjusting for structural breaks finally the out of sample analysis shows that volatility models accommodating instability and long memory characteristics of the data provide the best volatility forecasts for most cases

applied econometrics and implications for energy economics research abstract developments in applied econometrics particularly with regard to unit root tests and cointegration tests have motivated a rich empirical literature on energy economics over the last decade this study reviews recent developments in time series econometrics applications in the energy economics literature we first consider the literature on the integration properties of energy variables we begin with a discussion of the implications of whether energy variables contain a unit root and proceed to examine how results differ according to the specific unit root or stationarity test employed we then proceed to examine recent developments in the literature on cointegration granger causality and long run estimates between disaggregated energy consumption and economic growth we review both single country and panel studies and pay particular attention to studies which have expanded the literature through adding variables such as financial development and trade in addition to energy consumption to the augmented production function as well as studies which have extended the literature through examining disaggregated energy consumption by type in each case we highlight best practice in the literature point to limitations in the literature including econometric modeling challenges and suggest recommendations for future research a key message of our survey is that the profession needs to guard against overload of research in these areas as most applied studies are no longer adding anything more to what is already known

are emily and greg more employable than lakisha and jamal a field experiment on labor market discrimination we study race in the labor market by sending fictitious resumes to help wanted ads in boston and chicago newspapers to manipulate perceived race resumes are randomly assigned african american or white sounding names white names receive 50 percent more callbacks for interviews callbacks are also more responsive to resume quality for white names than for african american ones the racial gap is uniform across occupation industry and employer size we also find little evidence that employers are inferring social class from the names differential treatment by race still appears to still be prominent in the u s labor market jel j71 j64

energy and economic growth in the usa a multivariate approach abstract this paper examines the causal relationship between gdp and energy use for the period 1947 90 in the usa the relationship between energy use and economic growth has been examined by both biophysical and neoclassical economists in particular several studies have tested for the presence of a causal relationship in the granger sense between energy use and economic growth however these tests do not allow a direct test of the relative explanatory powers of the neoclassical and biophysical models a multivariate adaptation of the test vector autoregression var does allow such a test a var of gdp energy use capital stock and employment is estimated and granger tests for causal relationships between the variables are carried out although there is no evidence that gross energy use granger causes gdp a measure of final energy use adjusted for changing fuel composition does granger cause gdp

the economic importance of non timber forest products ntfps for livelihood maintenance of rural west african communities a case study from northern benin non timber forest products ntfps contribute significantly to a rural household s livelihood in the african semi arid tropics this study examines the income from ntfps and the dependency on these of different socio economic groups in northern benin using survey data from 230 households of two villages we firstly compared incomes of five different ethnic groups being differentiated by their traditional source of livelihood and regional provenance secondly we investigated disparities between three income groups on average income from ntfps accounted for 39 of total household income and had a strong equalizing effect on it however the economic relevance of ntfps differs between households poorer households are relatively more dependent on ntfps in order to fulfill basic needs than wealthier households however the latter extract more ntfps in quantitative terms and have significantly higher cash returns than poorer ones this is mainly due to a significant greater land holding moreover our study revealed that net income from ntfps reflects traditional sources of livelihoods of different ethnic groups in conclusion both conservation and development strategies should take into consideration the socio economic context of different beneficiaries of savanna woodland resources in order to apply appropriate measures to poverty reduction

gift exchange in a multi worker firm one of the main findings of a large body of gift exchange experiments is that in an incomplete contracts environment workers on average do not shirk and usually provide more than the minimum enforceable effort level in general 40 to 60 percent of the workers reward higher wages with higher effort these results are observed for simple one employer one worker relationships in this paper we investigate whether they generalize to the more realistic situation in which the employer employs several workers we compare a bilateral gift exchange game with a treatment in which each employer has four workers we find that effort levels in the latter treatment are only marginally lower gift exchange thus appears to be robust to increases in the size of the workforce and intention based reciprocity rather than social preferences seems to be the main driving force behind gift exchange

energy consumption and economic growth nexus in portugal italy greece spain and turkey an ardl bounds test approach 1965 2009 abstract the paper examines the nexus between primary energy consumption and growth in portugal italy greece spain and turkey pigst with annual time series data from 1965 to 2009 pigst are southern european economies which have experienced several episodes that make them of particular interest to the study of periods of economic expansion and stagnation an ardl bounds test approach is a suitable technique to examine energy growth nexus within the context of countries with both sporadic shocks outliers and permanent shocks structural breaks empirical results suggest bidirectional causality between energy and growth in both the long run and short run supporting the feedback hypothesis the results reveal themselves to be robust to panel framework an energy conservation policy will reduce gdp growth while a saving phenomenon is observed since one additional unit of product requires less than one unit of energy

a multivariate cointegration analysis of the role of energy in the us macroeconomy abstract this paper extends my previous analysis of the causal relationship of gdp and energy use in the usa in the post war period a majority of the relevant variables are integrated justifying a cointegration analysis the results show that cointegration does occur and that energy input cannot be excluded from the cointegration space the results are plausible in terms of macroeconomic dynamics the results are similar to my previous granger causality results and contradict claims in the literature based on bivariate models that there is no cointegration between energy and output

time varying granger causality tests for applications in global crude oil markets abstract this paper proposes time varying granger causality tests based on the tests developed by hong 2001 and two dynamic correlation estimators i e rolling correlation and dynamic conditional correlation multivariate garch here called the rolling hong and dcc mgarch hong tests respectively the proposed tests are used to examine time varying information spillover among global crude oil markets the results provide empirical evidence of time varying information spillover in particular the instantaneous causal effects of dubai and tapis crudes on brent and wti become stronger when a major event or events occur in major oil producing countries such events include the iraq war in march 2003 opec s announcement of a record production cut in december 2008 and the libyan civil war in early 2011 and consistent with previous studies wti and brent play dominant roles in global crude markets impulse response analysis shows that market information has a positive influence on the spillover effect in global crude oil markets moreover the dcc mgarch hong test consistently leads the rolling hong test which indicates that the former performs better

social identity and preferences social identities prescribe behaviors for people we identify the marginal behavioral effect of these norms on discount rates and risk aversion by measuring how laboratory subjects choices change when an aspect of social identity is made salient when we make ethnic identity salient to asian american subjects they make more patient choices when we make racial identity salient to black subjects non immigrant blacks but not immigrant blacks make more patient choices making gender identity salient has no effect on intertemporal or risk choices

why beauty matters we decompose the beauty premium in an experimental labor market where employers determine wages of workers who perform a maze solving task this task requires a true skill which we show to be unaffected by physical attractiveness we find a sizable beauty premium and can identify three transmission channels a physically attractive workers are more confident and higher confidence increases wages b for a given level of confidence physically attractive workers are wrongly considered more able by employers c controlling for worker confidence physically attractive workers have oral skills such as communication and social skills that raise their wages when they interact with employers our methodology can be adopted to study the sources of discriminatory pay differentials in other settings

economics and identity this paper considers how identity a person s sense of self affects economic outcomes we incorporate the psychology and sociology of identity into an economic model of behavior in the utility function we propose identity is associated with different social categories and how people in these categories should behave we then construct a simple game theoretic model showing how identity can affect individual interactions the paper adapts these models to gender discrimination in the workplace the economics of poverty and social exclusion and the household division of labor in each case the inclusion of identity substantively changes conclusions of previous economic analysis

sex discrimination in restaurant hiring an audit study in an audit study of sex discrimination in hiring comparably matched pairs of men and women applied for jobs as waiters and waitresses at restaurants in philadelphia in high price restaurants where earnings are higher job applications from women had an estimated probability of receiving a job offer that was lower by about 0 4 and an estimated probability of receiving an interview that was lower by about 0 35 both estimated differentials are statistically significant additional evidence suggests that customer discrimination partly underlies the hiring discrimination

the energy gdp nexus addressing an old question with new methods abstract this paper reassesses the causal relationship between per capita energy use and gross domestic product while controlling for capital and labour productivity inputs in a panel of 30 oecd countries over the past 40 years the paper uses panel unit root and cointegration testing and specifies an appropriate vector error correction model to analyse the nexus between income and energy use in doing so we contribute to an old debate using modern tools that shed a new light there is some evidence that over the very short run bidirectional causality exists our results also show a strong unidirectional causality running from capital formation and gdp to energy usage in the long run the reverse causality found in recent work is lost we then show that we can reproduce these earlier results in our data if we reproduce a slightly misspecified model for the engle granger two step procedure used in these earlier papers our findings thus imply that results are very sensitive to model misspecification and careful testing of specifications is required our results have some strong policy implications they suggest that policies aimed at reducing energy usage or promoting energy efficiency are not likely to have a detrimental effect on economic growth except over the very short run

nuclear energy consumption oil consumption and economic growth in g 6 countries bootstrap panel causality test abstract this study applies bootstrap panel granger causality to test whether energy consumption promotes economic growth using data from g 6 countries over the period of 1971 2010 both nuclear and oil consumption data are used in this study regarding the nuclear consumption economic growth nexus nuclear consumption causes economic growth in japan the uk and the us economic growth causes nuclear consumption in the us nuclear consumption and economic growth show no causal relation in canada france and germany regarding oil consumption economic growth nexus we find that there is one way causality from economic growth to oil consumption only in the us and that oil consumption does not granger cause economic growth in g 6 countries except germany and japan our results have important policy implications for the g 6 countries within the context of economic development

identity supervision and work groups i want to tell my foreman to f off but i can t so says mike a steel handler we meet in stud terkel s book working 1974 xxxv many workers stories we read in working and in ethnographies suggest workers greatly resent supervision as a result they exert lower effort and may sabotage production mike puts dents in the steel ethnographies also reveal workers who are not strictly monitored develop work group output norms this paper uses the con cept of identity to study trade offs in supervi sory policy 1 we follow the social psychology literature and examine intrinsic incentives that depend on how workers see themselves in rela tion to the firm when a supervisor monitors workers workers adopt an identity in opposition to the firm the firm gains information and can fine tune its incentive pay but resentful workers require high compensation to work in the firm s interest with no monitoring workers are less hostile to the firm but they may forge a work group identity with norms that restrict output we show that a firm may find it profitable to have lax supervision when workers take on a work group identity the cost per unit of effort can be lower than when workers view them selves in opposition to the firm we shall present the model and then discuss some classic studies of workplaces that portray these trade offs our identity framework synthesizes an emerg ing body of economic theory and empirics on incentives and monitoring e g bruno frey 1993 gary charness 2000 daniel s nagin et al 2002 michael t rauh and giulio seccia 1 this paper provides a simple formal model of tradeoffs described loosely in akerlof and kranton 2005 we also discuss further implications of supervision versus work group cohesion

electricity consumption growth nexus the case of malaysia abstract the goal of this paper is to model the relationship between electricity consumption and real gross domestic product gdp for malaysia in a bivariate and multivariate framework we use time series data for the period 1971 2003 and apply the bounds testing approach to search for a long run relationship our results reveal that electricity consumption real gdp and price share a long run relationship the results of the autoregressive distributed lag ardl estimates of long run elasticity of electricity consumption on gdp are found to be around 0 7 and statistically significant finally in the short run the results of the causality test show that there is a unidirectional causal flow from electricity consumption to economic growth in malaysia from these findings we conclude that malaysia is an energy dependent country leading us to draw some policy implications this paper adds support and validity thus reducing the policy makers concern on the ambiguity of the electricity and growth nexus in malaysia

identity and schooling some lessons for the economics of education abstract this review culls noneconomic literature on education by sociologists anthropologists and practitioners to present a new economic theory of students and schools this theory elaborates two themes that have eluded economic analysis first is the student as decision maker whose primary motivation is her identity second is a conception of the school as a social institution this framework suggests a new perspective on questions such as resource allocation and school reform it explains why some educational policies succeed and others fail we show how sociological variables may affect outcomes and suggest ways economists can incorporate them into theoretical and empirical research

gender discrimination in job ads evidence from china we study explicit gender discrimination in a population of ads on a chinese internet job board gender targeted job ads are common favor women as often as men and are much less common in jobs requiring higher levels of skill employers relative preferences for female versus male workers on the other hand are more strongly related to the preferred age height and beauty of the worker than to job skill levels almost two thirds of the variation in advertised gender preferences occurs within firms and one third occurs within firmoccupation cells overall these patterns are not well explained by a firm level animus model by a glass ceiling model or by models in which broad occupational categories are consistently gendered across firms instead the patterns suggest a model in which firms have idiosyncratic preferences for particular job gender matches which are overridden in skilled positions by factors such as thinner labor markets or a greater incentive to search broadly for the most qualified candidate jel codes j16 j63 j71 copyright 2013 oxford university press

an empirical study of age discrimination in norway and germany using a questionnaire and a sample of students and personnel managers we establish the existence of age discrimination in the hiring process in germany and norway as expected age discrimination is more prominent in germany where the hiring probability of equally qualified applicants is reduced by about 22 percentage points due to an age differential of 14 years as opposed to only 12 percentage points in norway within both countries the tendency to discriminate does not differ between students and personnel managers and does not depend on the age of the decision maker the phenomenon of unemployment among older workers is characterized less by the risk of becoming unemployed than by the problem of remaining unemployed and failing to find new work frerichs and naegele 1998 p 59

retesting the causality between energy consumption and gdp in china evidence from sectoral and regional analyses using dynamic panel data abstract the increasing attention on energy policy needs has provided a renewed stimulus to research the linkages between energy consumption and economic performance in china this paper examined the causal relationship between energy consumption and economic growth in the regional and sectoral aspects by adopting provincial panel data in china from 1995 to 2008 the results indicate that economic growth causes more energy consumption in china not only at the national level but also at the regional and sectoral levels then the eastern region and the industrial sector show results quite similar to that of the whole country in which a bidirectional causality relationship exists between energy consumption and economic growth the implication for energy policies in china is that the eastern region and the industrial sector should play a leading role in the adjustment of energy consumption patterns and the transformation of the economy structure energy prices have limited effects on energy consumption but do have effects on economic growth because the energy price mechanism is more government oriented than market oriented in china

energy consumption and economic growth in central america evidence from a panel cointegration and error correction model abstract this study examines the relationship between energy consumption and economic growth for six central american countries over the period 1980 2004 within a multivariate framework given the relatively short span of the time series data a panel cointegration and error correction model is employed to infer the causal relationship based on the heterogeneous panel cointegration test by pedroni pedroni p 1999 critical values for cointegration tests in heterogeneous panels with multiple regressors oxford bulletin of economics and statistics 61 653 670 pedroni p 2004 panel cointegration asymptotic and finite sample properties of pooled time series tests with an application to the ppp hypothesis new results econometric theory 20 597 627 cointegration is present between real gdp energy consumption the labor force and real gross fixed capital formation with the respective coefficients positive and statistically significant the granger causality results indicate the presence of both short run and long run causality from energy consumption to economic growth which supports the growth hypothesis

disaggregate energy consumption and industrial production in south africa abstract this paper tries to assess the relationship between disaggregate energy consumption and industrial output in south africa by undertaking a cointegration analysis using annual data from 1980 to 2005 we also investigate the causal relationships between the various disaggregate forms of energy consumption and industrial production our results imply that industrial production and employment are long run forcing variables for electricity consumption applying the toda h y yamamoto t 1995 statistical inference in vector autoregressions with possibly integrated processes journal of econometrics 66 225 250 technique to granger causality we find bi directional causality between oil consumption and industrial production for the other forms of energy consumption there is evidence in support of the energy neutrality hypothesis there is also evidence of causality between employment and electricity consumption as well as coal consumption causing employment