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four anonymous referees, and numerous seminar participants for helpful comments and discussions. We also thank Abstract This paper uses Social Security Administration longitudinal earnings micro data since 1937 to analyze the evolution of inequality and mobility in the United States. Annual earnings inequality follows a U-shape pattern, decreasing sharply(More)
This paper analyzes peer effects among university scientists. Specifically, it investigates whether the number of peers and their average quality affects the productivity of researchers in physics, chemistry, and mathematics. The usual endogeneity problems related to estimating peer effects are addressed by using the dismissal of scientists by the Nazi(More)
Any opinions expressed here are those of the author(s) and not those of IZA. Research published in this series may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between science,(More)
Any opinions expressed here are those of the author(s) and not those of the institute. Research disseminated by IZA may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between(More)
to the NBER) and the Fonds pour la Formation de Chercheurs et l'Aide à la Recherche (97-NC-1676 to Margolis). We would like to thankSorbonne for comments on previous versions of this paper. The authors would also like to thank Lars Vilhuber for valuable research assistance. The American data used in this study were taken from the NBER extracts of the(More)
and many seminar participants for helpful comments and discussions. We also thank Ed DeMarco and Linda Maxfield for their support, for help with the data, and Thomas Solomon and Barbara Tyler for computing support. Financial support from the Sloan Foundation and NSF Grant SES-0617737 is gratefully acknowledged. The views expressed herein are those of the(More)
We use the fall of the Berlin Wall in 1989 to identify a causal effect of social ties between West and East Germans on economic growth, household income, and firm investment: West German regions which (for idiosyncratic reasons) had closer social ties to East Germany prior to 1989 experienced faster growth in income per capita after reunification. A one(More)