Journal articles

Atkinson, Q. D., Claessens, S., Fischer, K., Forsyth, G. L., Kyritsis, T., Wiebels, K., Moreau, D. (in press). Being specific about generalisability. Religion, Brain & Behavior.

Hoogeveen, S. et al. (in press). A many-analysts approach to the relation between religiosity and well-being. Religion, Brain & Behavior.

Krems, J. A., Claessens, S., Fales, M. R., Campenni, M., Haselton, M. G., & Aktipis, A. (2021). An agent-based model of the female rivalry hypothesis for concealed ovulation in humans. Nature Human Behaviour, 5(6), 726-735. paper, data and code

Claessens, S., Ayers, J. D., Cronk, L., & Aktipis, A. (2021). Need-based transfer systems are more vulnerable to cheating when resources are hidden. Evolution and Human Behavior, 42(2), 104-112. paper, data and code

Claessens, S., Kyritsis, T., & Atkinson, Q. D. (2020). Revised analysis shows relational mobility predicts sacrificial behavior in Footbridge but not Switch or Loop trolley problems. Proceedings of the National Academy of Sciences, 117(24), 13203-13204. paper, data and code

Claessens, S., Fischer, K., Chaudhuri, A., Sibley, C. G., & Atkinson, Q. D. (2020). The dual evolutionary foundations of political ideology. Nature Human Behaviour, 4(4), 336–345. paper

Neilands, P., Claessens, S., Ren, I., Hassall, R., Bastos, A. P., & Taylor, A. H. (2020). Contagious yawning is not a signal of empathy: no evidence of familiarity, gender or prosociality biases in dogs. Proceedings of the Royal Society B, 287(1920), 20192236. paper, data and code

Book chapters

Claessens, S., Chaudhuri, A., Sibley, C. G. & Atkinson, Q. D. (2022). The evolutionary basis of political ideology. In C. G. Sibley & D. Osbourne (Eds.), The Cambridge Handbook of Political Psychology. Cambridge, UK: Cambridge University Press. chapter


Claessens, S., & Atkinson, Q. D. (2022). The non-independence of nations and why it matters. pre-print, data and code

Claessens, S., & Kyritsis, T. (2022). Is partner choice related to prosociality? A cross-national investigation. pre-print, data and code

Kelly, D., Claessens, S., Sibley, C. G., Chaudhuri, A., & Atkinson, Q. D. (2021). Cooperative phenotype predicts climate change belief and pro-environmental behaviour. pre-print, data and code

Claessens, S., Sibley, C. G., Chaudhuri, A., & Atkinson, Q. D. (2020). Cooperative and conformist behavioural preferences predict the dual dimensions of political ideology. pre-print, data and code

Ayers, J. D., Guevara Beltran, D., Alcock, J., Baciu, C., Claessens, S., Cronk, L., … Aktipis, A. (2020). How is the COVID-19 pandemic affecting cooperation? pre-print

Articles in preparation / under review

Bastos, A. P., Claessens, S., Nelson, X. J., Welch, D., Atkinson, Q. D., & Taylor, A. H. (in prep). Is tool use really so rare? Crowdsourcing and phylogenetic inference triple the number of potential tool-using parrot species.

Sheehan, O., Watts, J., Gray, R. D., Bulbulia, J., Claessens, S., Ringen, E. J., & Atkinson, Q. D. (under review). Coevolution of religious and political authority in Austronesian societies. Nature Human Behaviour.