“...We investigate whether there is a link between conditional cooperation and betrayal aversion. We use a public goods game to classify subjects by type of...”

“...We study the relative effectiveness of contracts that are framed either in terms of bonuses or penalties. In one set of treatments subjects know at the time of...”

“...Previous experiments have found a moderate, positive effect of group size on cooperation in voluntary contribution mechanism (VCM) games. This effect has been...”

“...Social cooperation often requires collectively beneficial but individually costly restraint to maintain a public good, or it needs costly generosity to create...”