Previous research shows that collective action to avoid a catastrophic threshold, such as a climate "tipping point", is unaffected by uncertainty about the impact of crossing the threshold but that collective action collapses if the location of the threshold is uncertain. Theory suggests that...

Choice between different versions of a game may provide a means of sorting, allowing players with different preferences to self-select into groups of similar types. We experimentally investigate whether auctioning off the right to play a prisoner’s dilemma game in which the cost of unilateral...