Axelrod, R. & Hamilton, W. D. Science 211, 1390–1396 (1981).
Maynard Smith, J. & Price, G. R. Nature 246, 15–18 (1973).
Trivers, R. L. Q. Rev. Biol. 46, 35–57 (1971).
Hamilton, W. D. J. Theor. Biol. 7, 1–16 (1964).
Rapoport, A. & Chammah, A. M. Prisoner’s Dilemma: A Study in Conflict and Cooperation (Univ. Michigan Press, 1965).
Hammerstein, P. in Genetic and Cultural Evolution of Cooperation (ed. Hammerstein, P.) 83–93 (MIT Press, 2003).
Clutton-Brock, T. Nature 462, 51–57 (2009).
Wu, J. & Axelrod, R. J. Conflict Resolut. 39, 183–189 (1995).
Sugden, R. The Economics of Rights, Co-operation and Welfare (Blackwell, 1986).
Lenfesty, H., Mathew, S., Fikes, T., Ross, C. T. & Boyd, R. Proc. R. Soc. B 291, 20240861 (2024).
van Veelen, M., García, J., Rand, D. G. & Nowak, M. A. Proc. Natl Acad. Sci. USA 109, 9929–9934 (2012).
Graser, C. & van Veelen, M. Tinbergen Institute Discussion Paper No. TI 2024-022/I (2024).
Mathew, S. & Boyd, R. Preprint at PsyArXiv https://doi.org/10.31234/osf.io/e5zuc_v1 (2026).
Hruschka, D. J. & Henrich, J. J. Theor. Biol. 239, 1–15 (2006).
Leimar, O. & Bshary, R. Proc. Natl Acad. Sci. USA 121, e2317736121 (2024).
Xue, M. & Silk, J. B. Evol. Hum. Behav. 33, 17–25 (2012).
