The pursuit of economic growth is at the top of every nation's policy agenda at the end of the 20th century. This authoritative and comprehensive book goes beyond the narrowly-based convergence model of economic growth by considering global, national and regional patterns of growth from a...

We provide an overidentification test for a nonparametric treatment model where individuals are allowed to select into treatment based on unobserved gains. Our test can be used to test the validity of instruments in a framework with essential heterogeneity (Imbens and Angrist 1994). The...

This paper argues that typical applications of panel unit root tests should take possible nonstationarity in the volatility process of the innovations of the panel time series into account. Nonstationarity volatility arises for instance when there are structural breaks in the innovation...