In this thesis I present three essays in which the influence of heuristics on individual decision making is analyzed and two essays dealing with behavioral aspects of moral costs. In chapter two, we investigate the effect a traders’ decision can have on the disposition effect heuristic when...

In an experiment on moral cleansing with an endogenously manipulated moral self-image, we examine the relevance of the addressee of an immoral action. The treatments differ such that cheating on a die roll reduces either the experimenter's or another subject's payoff. We find that cheating is...

The present book adds to the broad field of investigations concerning what affects and determines human cooperation. It provides new insights into internal and external factors that influence such decisions. Rather than presenting a closed and universal examination, this book should be seen as...