Helping somebody may undermine his incentives to work. What Buchanan identified more than 25 years ago as the Samaritan's dilemma is basically a time-inconsistency problem. The paper discusses possible solutions of the dilemma such as punishment within an iterated game, reshaping the game in the...

In Economics, as in any social science, empirical tests of theoretical results face a problem: researchers are unable to reproduce the whole economy (or at least its relevant parts) in their laboratories. Nowadays, Experimental Economics uses stylized experiments, drawing on the experience of...

Drawing on Transaction Costs Economics, this paper develops a new approach to conflict of law rules. It outlines a concept of constitutional uncertainty in international trade and presents a model of international transactions in the presence of a diversity of legal orders. We develop a general...

Mutually beneficial agreements might fail if the parties fear contractual opportunism. Litigation is supposed to prevent this, but still leaves room for litigational opportunism: Even knowing that the opponent has fulfilled his obligations, a party might bring suit. We show that with positive...

Even if the expected punishment on tax evasion is negligible, empirical studies show that actual tax evasion is smaller than rational choice models predict. In addition to this, tax payer do not respond on parameter changes as predicted. Some authors tried to explain this puzzle by assuming "tax...

Mutually beneficial agreements might fail if the parties fear contractual opportunism. Litigation is supposed to be a remedy, but gives scope for another kind of opportunistic behavior which we call litigational opportunism: Even knowing that the opponent has fulfilled his obligations, a party...