----------------- HES POSTING ----------------- Bruce My paper "Now You See It, Now You Don't: Emerging Contrary Results in Economics" Journal of Economic Methodology Dec 1997, contains a compilation of over 20 empirical literatures where there have been "reversals": an empirical result is apparently established, but then a dissenting study or studies comes along with the opposite result. The paper also discusses alternative explanations for why this happens. The literatures cited are sometimes, but not always, ones that involve policy issues explicitly or implicitly. Robert S. Goldfarb ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]