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| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
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| 1 | Vivi Li | -- | 1398 | 2022-10-08 05:38:18 |
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Subjective expected relative similarity (SERS) is a normative and descriptive theory that predicts and explains cooperation levels in a family of games termed Similarity Sensitive Games (SSG), among them the well-known Prisoner's Dilemma game (PD). SERS was originally developed in order to (i) provide a new rational solution to the PD game and (ii) to predict human behavior in single-step PD games. It was further developed to account for: (i) repeated PD games, (ii) evolutionary perspectives and, as mentioned above, (iii) the SSG subgroup of 2x2 games. SERS predicts that individuals cooperate whenever their subjectively perceived similarity with their opponent exceeds a situational index derived from the game’s payoffs, termed the similarity threshold of the game. SERS proposes a solution to the rational paradox associated with the single step PD and provides accurate behavioral predictions. The theory was developed by Prof. Ilan Fischer at the University of Haifa.
References
- Fischer, I. (2009). Friend or foe: subjective expected relative similarity as a determinant of cooperation. Journal of Experimental Psychology: General, 138(3), 341.
- Axelrod, R., & Hamilton, W. D. (1981). The evolution of cooperation. Science, 211(4489), 1390-1396.
- Axelrod, Robert (1984), The Evolution of Cooperation, Basic Books, ISBN:0-465-02122-0
- Nowak, M., & Sigmund, K. (1993). A strategy of win-stay, lose-shift that outperforms tit-for-tat in the Prisoner's Dilemma game. Nature, 364(6432), 56-58.
- Fischer, I. (2012). Similarity or reciprocity? On the determinants of cooperation in similarity-sensitive games. Psychological Inquiry, 23(1), 48-54.
- Fischer, I., Frid, A., Goerg, S. J., Levin, S. A., Rubenstein, D. I., & Selten, R. (2013). Fusing enacted and expected mimicry generates a winning strategy that promotes the evolution of cooperation. Proceedings of the National Academy of Sciences, 110(25), 10229-10233.
