A vast literature shows that individuals frequently violate normative principles in reasoning. In evaluating the relevance of these findings for psychology, economics, and related disciplines, it is natural to ask whether reasoning errors reflect random aberrations or systematic biases. One...

A vast literature shows that individuals frequently fail to identify the normative solutions in logical reasoning tasks. Much attention has been devoted to the study of these deviations at the individual level; less eVort was exerted to investigate whether institutional settings might facilitate...