One of the most salient and relevant dimensions of team heterogeneity is ethnicity. We measure the causal impact of ethnic diversity on the performance of business teams using a randomized field experiment. We follow 550 students who set up 45 real companies as part of their curriculum in an...

This paper studies the impact of diversity in cognitive ability among members of a team on their performance. We conduct a large field experiment in which teams start up and manage real companies under identical circumstances. Exogenous variation in - otherwise random - team composition is...

This study critically reviews quantitative methods that have been employed and evidence that has been gathered to assess the benefits of marriage and consequences of other family structures. The study begins by describing theoretical models of the determinants of different well-being outcomes...

In this paper, we evaluate the effect of the literacy hour in English primary schools on pupil attainment. The National Literacy Project (NLP) was undertaken in about 400 English primary schools in 1997 and 1998. We compare the reading and overall English attainment of children in NLP schools as...

This paper outlines a set of economic criteria to assess an immigrant receiving country?s immigration policy from three perspectives. These three perspectives include the resident population, the immigrant and the sending country viewpoints. An expanded version of Julian Simon?s financial...

An empirical analysis of various waves of the ALLBUS social survey shows that union density fell substantially in West Germany from 1980 to 2000. Such a negative trend can be observed for men and women and for different groups of the workforce. Repeated crosssectional analyses suggest that a...

Immigrants ascend to citizenship at differential rates in Canada. Why is this so? This paper investigates the economic costs and benefits derived from citizenship to rationalize the differential rates of citizenship ascension. Canadian earnings evidence confirms the sizable economic benefits of...

Since interventions by the public sector generally commit substantial societal resources, the evaluation of effects and costs of policy interventions is imperative. This paper outlines why program evaluation should follow well-respected scientific standards and why it should be performed by...

In recent years the National Health Service (NHS) in Britain has experienced an acute shortage of qualified nurses. This has placed issues of recruitment and retention in the profession high on the political agenda. In this paper we investigate the determinants of job satisfaction for nurses,...

This paper develops a theoretical model of a worker?s decision problem under uncertainty about the optimal separation time, when holding a representative outside offer but facing fixed costs of quitting. Implications of the model?s closed form solution are consistent with the quit behavior of...