design an experiment to study whether such commodity transfers can be viewed as investments based on trust and reciprocity …, or whether they rather resemble presents with distributional intentions. Our experiment essentially modifies Berg et al ….’s investment game by introducing an upper bound to what a contributor can be repaid afterwards. By varying this upper bound …

contracting is infeasible. One example is the study by Berg et al. (1995) of the investment game. In this game the person who … receives the investment is the one who may reward the investor. This is a direct reward game. Similar to Dufwenberg et al … investor may only be rewarded by a third person who did not receive his investment. Furthermore we investigate the influence of …