We analyze an experimental public goods game in which group members can endogenously determine whether they want to supplement a standard voluntary contribution mechanism with the possibility of rewarding or punishing other group members. We find a large and positive effect of endogenous...

We conduct a laboratory experiment with a constant-sum sender-receiver game to investigate the impact of individuals' first- and second-order beliefs on truth-telling. While senders are more likely to lie if they expect the receiver to trust their message (which is in line with expected payoff...