An experimental design using treatments of a voluntary contribution mechanism is used to test household efficiency. Efficiency is decisively rejected in all treatments contrary to the assumption of most household models. Information on initial endowments of spouses improves efficiency only in...

A number of studies document an in-group bias in social dilemma situations. While group structure and dynamics are important in shaping in-group favouritism, less attention has been paid to individual characteristics affecting favouritism. Using data from dictator games conducted among 523...