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If the opponent previously was cooperative, the agent is cooperative. In a tit for tat strategy, once an opponent defects, the tit for tat player immediately responds by defecting on the next move. Aug 25, Language: Source of samples A male adult ground tit from the Qinghai-Tibetan Plateau was used in this study.

For example, when the parties are friends it may be best for the friendship when a player cooperates at every step despite occasional deviations by the other player. An agent using this strategy will first cooperate, then subsequently replicate an opponent's previous action. Try it free for 30 days! In addition, we aimed to identify some of the factors that contribute to the high-altitude adaptation of the ground tit, which may help in understanding the mechanisms used by other species in the QTP highlands.

Likelihood ratio tests based on a branch site model were performed on the CDS alignments of orthologs among chickens, zebra finches, turkeys, and ground tits. To manage your subscription, visit your Bible Gateway account settings. The Evolution of Cooperation. No Delimiter —