We quantify firm heterogeneity in skill returns and present direct evidence of worker–firm complementarities. Within a model of firms' demand for cognitive and noncognitive attributes we show that identification depends on the availability of skill measures. Linking administrative data to test...

We provide the first quantitative survey of the empirical literature on hedge fund performance. We examine the impact of potential biases on the reported results. Using a sample of 1,019 intercept terms from regressions of hedge fund returns on risk factors (the "alpha") collected from 74...

We examine the factors influencing published estimates of hedge fund performance. Using a sample of 1,019 intercept terms from regressions of hedge fund returns on risk factors (the "alphas") collected from 74 studies, we document a strong downward trend in the reported alphas. The trend...

We provide the first quantitative survey of the empirical literature on hedge fund per- formance. We examine the impact of potential biases on the reported results. Empirical analysis in prior studies has been plagued by fragmentation of underlying data and by lim- ited consensus on how hedge...

The paper analyzes permanent aspects of brain drain phenomenon referred to Italian highly skilled workers. The analysis regards a sample of post-doctoral graduates, medical specialists, and academic researchers. Results suggest that brain drain in Italy is not temporary, as demonstrated by...