Two major methods of explaining economic institutions, namely by strategic choices or through (indirect) evolution, are compared for the case of a homogenous quadratic duopoly market. Sellers either can provide incentives for agents to care for sales, or evolve as sellers who care for sales in...

A simple model of marriage and divorce predicts that no marriages occur. Yet, in real life, people marry all the time in seemingly similar situations. This discordance is explained using psychological game theory. An emotional guilt effect is explicitly modeled and multiple belief-dependent...

The classical price competition model (named after Bertrand), prescribes that in equilibrium prices are equal to marginal costs. Moreover, prices do not depend on the number of competitors. Since this outcome is not in line with real-life observations, it is known as the Bertrand Paradox. Many...

The relationships between five stability criteria for evolutionary games are studies.

The probability of income loss depends on talent and effort. Effort has positive externalities and therefore individuals are proportion to their perceived diligence. The social norm requires more effort from individuals perceived as more talented, but talent is private information and...

We study a class of deceptively similar games, which however have different player sets and predictions that vary with their cardinality. The economic, biological, political, and psychological applications are many. The game-theoretic principles involved are compelling as predictions rely on...

We perform a (psychological) game-theoretic analysis of cheating in the setting proposed by Fischbacher & Föllmi-Heusi (2013). The key assumption, which we refer to as perceived cheating aversion, is that the decision maker derives disutility in proportion to the amount in which he is perceived...

Institutions for co-financing agreements often exist to encourage public good investment. Can such frameworks deliver maximal investment when agents are motivated by reciprocity? We demonstrate that indeed they can, but not in the way one might expect. If maximal investment is impossible in the...

We consider an expanded notion of social norms that renders them belief-dependent and partial, formulate a series of related testable predictions, and design an experiment based on a variant of the dictator game that tests for empirical relevance. Main results: Normative beliefs influence...

Harassment bribes - payments people give in order not to be denied what they are legally entitled to – are common in for example India. Kaushik Basu recently made a ''radical'' proposal to reduce its occurrence: Legalize the act of giving the bribe and double the fine for accepting the bribe!...