People do not only feel guilt from not living up to others expectations (Battigalli and Dufwenberg (2007)), but may also like to exceed them. We propose a model that generalizes the guilt aversion model to capture the possibility of positive surprises when making gifts. A model extension allows...

Why do some people behave pro-socially while others do not? Using an experimental design based on Konow and Earley (JPubE, 2008), I investigate a reason already proposed by Aristotle in his Nicomachean Ethics: He claims that there is a nexus between virtues and well-being and that enduring...

We investigate the presence and stability of dynamically inconsistent time preferences across contexts with and without interpersonal trade-offs. In a longitudinal experiment subjects make a series of intertemporal allocation decisions of real-effort tasks between themselves and another person....

We investigate if people exploit moral wiggle room in markets when revelation is stochastic and the revealed information is potentially erroneous. In our laboratory experiment, subjects purchase products associated with co-benefits represented as a contribution to carbon offsets purchased by the...

Different social contexts have been used when measuring distributional preferences. This could be problematic as contextual variance may inadvertently muddle the measurement process. We use a within-subjects design and measure distributional preferences in resource allocation tasks with role...

We study individuals who can nudge themselves out of, or opt into a set of rules which either allows them to spy on an opponent, or to sabotage an opponent, or to fabricate payoff-relevant information on the opponent s moves. In an experiment, we observe significant altruism under rules which...

We experimentally investigate the relevance of (asymmetric) outside options in ultimatum bargaining. Building on the generalized equity principle formulated by Selten (1978) we derive three di erent equity rules. These equity rules can explain 43% of all o ers. Our within-subject design allows...

We present evidence from a laboratory experiment that individuals who feel having been treated unfairly in the interaction with others are more likely to cheat in a subsequent, unrelated game. We interpret this result as showing that the violation of a social norm (fairness) by others can be...