We introduce a novel mechanism to eliminate endgame effects in repeated prisoner’s dilemma experiments. In the main phase of a supergame our mechanism generates more persistent cooperation than finite horizon or random continuation rules. Moreover, we find evidence for cooperation-enhancing “active/reactive” strategies which concentrate in the initial phase of a supergame as subjects gain experience.
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Bruttel, L., Kamecke, U. Infinity in the lab. How do people play repeated games?. Theory Decis 72, 205–219 (2012). https://doi.org/10.1007/s11238-011-9247-6
- Prisoner’s dilemma
- Infinite horizon
- Continuation rule