In-group favoritism in social dilemma situations is one of the main findings of studies in Social Identity Theory. We investigate what causes the in-group bias: is it due to mere group affiliation or, alternatively, is guilt-aversion a possible explanation? We induce group membership in a...

In our experiment, a dictator game variant, the reported outcome of a die roll determines the endowment (low/high) in a subsequent dictator game. In one treatment the experimenter is present and no cheating is possible, while in another subjects can enter the result of the roll themselves. Moral...

This paper considers a procedurally fair provision mechanism that allows members of a small group to determine, through their bids, which project to implement. Previous experiments with (only) costly projects have demonstrated that the mechanism is efficiency enhancing. Our experiment tests...

Experimental studies of the WTP-WTA gap avoid social trading by implementing an incentive compatible mechanism for each individual trader. We compare a traditional random price mechanism and a novel elicitation mechanism preserving social trading, without sacrificing mutual incentive...

Bidding rules that guarantee procedural fairness may induce more equilibrium bidding and moderate other-regarding concerns. Here, we investigate procedural fairness as in Güth (2011). In our experiment, we assume commonly known true values and only two bidders to implement a best-case scenario...

This paper derives and justifies a procedurally fair bidding mechanism and reviews experiments that apply the mechanism to public projects pro- vision. In the experiments, not all parties benefit from provision, and the projects' costs can be negative. The experimental results indicate that the...

Envy is often the cause of mutually harmful outcomes. We experimentally study the impact of envy in a bargaining setting in which there is no conflict in material interests: a proposer, holding the role of residual claimant, chooses the size of the pie to be shared with a responder, whose share...

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...