Cheap Talk and Secret Intentions in a Public Goods Experiment

In a public goods experiment, subjects can vary over a period of stochastic length two contribution levels: one is publicly observable (their cheap talk stated intention), while the other is not seen by the others (their secret intention). When the period suddenly stops, participants are restricted to choose as actual contribution either current alternative. Based on the two types of choice data for a partners and a perfect strangers condition, we conamp;#64257;rm that amp;#64257;nal outcomes strongly depend on the matching protocol. As to choice dynamics, we distinguish diamp;#64256;erent types of adaptations