Models of evolutionary game theory have shown that punishment may be an adaptive behaviour in environments characterised by a social-dilemma situation. Experimental evidence closely corresponds to this finding but questions the cooperation-enhancing effect of punishment if players are allowed to...

Models of evolutionary game theory have shown that punishment may be an adaptive behaviour in environments characterised by a social-dilemma situation. Experimental evidence closely corresponds to this nding but questions the cooperation-enhancing eect of punishment if players are allowed to...

In recent years, differences between traditional and green parties have been leveled with respect to climate protection. We show that this convergence in party platforms can be explained by successful international climate agreements. We set up a voting model where political parties differ in...

This paper presents experimental evidence that contributions to a public good can be path-dependent for a limited time span. We study a repeated linear public-good game with punishment opportunities. Our data shows that subjects who had experienced a higher marginal return on public-good...

We present experimental evidence on the existence of disadvantageous lies. Literature so far assumes that people do not lie to their monetary disadvantage. However, some people have preferences for appearing honest. If the utility gained from appearing honest outweighs the monetary payoff gained...

Taking the initiative is a crucial element of leadership and an important asset for many jobs. We assess leadership in a game in which it emerges spontaneously since people have a non-obvious possibility to take the initiative. Combining this game with small experimental games and...