We analyse an experimental public goods game in which group members can endogenously determine whether they want to supplement a standard voluntary contribution mechanism with the possibility of rewarding or punishing other group members. We find a significantly positive effect of endogenous...

We examine the publications of authors affiliated with an economics research institution in Canada in (1) the Top-10 journals in economics according to journals' impact factors, and (2) the Canadian Journal of Economics. We consider all publications in the even years from 1980 to 2000. Canadian...

Dynamic competitive settings may create psychological pressure when feedback about the performance of competitors is provided before the end of the competition. Such psychological pressure could produce a first-mover advantage, despite a priori equal winning probabilities. Using data from a...

We show in a public goods experiment on three continents that conditional cooperation is a universal behavioral regularity. Yet, the number of conditional cooperators and the extent of conditional cooperation are much higher in the United States than anywhere else.