We experimentally analyze leading by example in a public goods game with two permanent and two temporary group members. Our results show that leadership when permanent and temporary members interact leads to lower contributions than interaction without leadership.

We investigate experimentally whether entry costs have an impact on the evolutionof cooperation in a social dilemma game. In particular, subjects repeatedly playthe so-called takeover game with anonymous partners randomly drawn from a fixedpopulation of participants. The game represents a social...