Experimenters make theoretically irrelevant decisions concerning user interfaces and ordering or labeling of options. Reanalyzing dictator games, I first show that such decisions may drastically affect comparative statics and cause results to appear contradictory across experiments. This...

In the proto-coalition model of government formation, formateur F appoints a proto-coalition and asks its members whether to start negotiating a coalition contract. If all accept, then the proto-coalition forms and starts negotiating; otherwise, a caretaker government assumes office. I extend...

This paper considers a two-stage oligopoly model with downstream retailers and two types of transaction costs (in contracting retailers and in direct retailing). Our analysis shows how transaction costs affect vertical integration in a strategic model of oligopoly, and it relates transaction...