In-group favoritism in social dilemma situations is one of Social Identity Theory's main findings. We investigate what causes the in-group bias: is it merely due to group affiliation or, alternatively, is guilt-aversion moderating the strength of in-group favoring? We induce group membership in...

Actual behaviour is influenced in important ways by moral emotions, for instance guilt or shame. The framework of dynamic psychological games allows the economic modelling of such emotions. Our experimental study uses psychological scales to measure individuals’ dispositions to experience...

There is overwhelming evidence of reciprocal behavior, driven by intentions. However, the role of consequences is less clear cut. Experimentally manipulating how efficient trust and reciprocity can be in deterministic and uncertain environments allows us to study how payoff consequences of trust...

We experimentally investigate how proposers in the Ultimatum Game behave when their cognitive resources are constrained by time pressure and cognitive load. In a dual-system perspective, when proposers are cognitively constrained and thus their deliberative capacity is reduced, their offers are...