It has been shown in the experimental literature on the prisoners' dilemma game that the strategy of ‘ tit for tat’ is a very effective and frequently chosen way of sustaining co - operation even though it is far simpler than Abreu's strategies (and neither subgame perfect nor renegotiation - proof).
It has been shown in the experimental literature on the prisoners' dilemma game that the strategy of ‘ this for that is a very effective and frequently chosen way of sustaining co - operation even though it is far simpler than Abreu's strategies (and neither subgame perfect nor renegotiation - proof).