Does regional unemployment increase or rather decrease entrepreneurial activity? Although this question has been hotly debated among researchers for decades the answers yielded so far are ambiguous and inconclusive. The paper proposes an innovative approach that takes not only interregional differences in unemployment rates, but also in unemployment duration and the human capital of the unemplo...

T HERE have been a number of attempts to estimate the relationship between schooling and earnings of individuals, but the most common feature of these studies has been severe data limitation which, in turn, has dictated how the analysis could proceed. Perhaps the most serious restriction imposed by the data has been the assumption that earnings relationships are the same across the nation or, a...

Many models of local species interactions predict the occurrence of priority effects due to alternative stable equilibria (ASE). However, few empirical examples of ASE have been shown. One possible explanation for the disparity is that local ASE are difficult to maintain regionally in patch dynamic models. Here we examine two possible mechanisms for regional coexistence of species engaged in lo...