Contributions to the public goods stem from selfish motivations (strategic cooperation) as well as other-regarding considerations, either related to opponents’ behaviour (reciprocity), or unconditional. In this paper we provide strong experimental evidence that these components are not...

Building upon some education studies finding that cooperative behaviour in class yields better achievements among students, this paper presents a simple model showing that free riding incentives lead to an insufficient degree of cooperation between schoolmates, which in turn decreases the...