Bergstrom, T. C. 2002. “Evolution of Social Behavior: Individual and Group Selection.” Journal of Economic Perspectives 16: 67–88. https://doi.org/10.1257/0895330027265

Bijma, P., W. M. Muir and J. A. M. Van Arendonk. 2007. “Multilevel Selection 1: Quantitative Genetics of Inheritance and Response to Selection.” Genetics 175: 277–288. https://doi.org/10.1534/genetics.106.062711

Boyer, P. and P. Liénard. 2006. “Why Ritualized Behavior? Precaution Systems and Action Parsing in Developmental, Pathological and Cultural Rituals.” Behavioral and Brain Sciences 29(6): 595–650. https://doi.org/10.1017/S0140525X06009332

Byrne, R. W. and L. A. Bates. 2010. “Primate Social Cognition: Uniquely Primate, Uniquely Social or Just Unique?” Neuron 65: 817–830. https://doi.org/10.1016/j.neuron.2010.03.010

Causer, J., P. S. Holmes, N. C. Smith and A. M. Williams. 2011. “Anxiety, Movement Kinematics, and Visual Attention in Elite-Level Performers.” Emotion 11(3): 595–602. https://doi.org/10.1037/a0023225

Fitch, W. T., L. Huber and T. Bugnyar. 2010. “Social Cognition and the Evolution of Language: Constructing Cognitive Phylogenies.” Neuron 65: 795–814. https://doi.org/10.1016/j.neuron.2010.03.011

Higuchia, T., K. Imanakab and T. Hatayamac. 2002. “Freezing Degrees of Freedom under Stress: Kinematic Evidence of Constrained Movement Strategies.” Human Movement Science 21: 831–846. https://doi.org/10.1016/S0167-9457(02)00174-4

Lang, M., J. Krátký, J. H. Shaver, D. Jerotijević and D. Xygalatas. 2015. “Effects of Anxiety on Spontaneous Ritualized Behavior.” Current Biology 25: 1892–1897. https://doi.org/10.1016/j.cub.2015.05.049

Lindquist, K. A. and L. F. Barrett. 2012. “A Functional Architecture of the Human Brain: Emerging Insights from the Science of Emotion.” Trends in Cognitive Sciences 16: 533–540. https://doi.org/10.1016/j.tics.2012.09.005

Lindquist, K. A., A. B. Satpute, T. D. Wager, J. Weber and L. F. Barrett. 2016. “The Brain Basis of Positive and Negative Affect: Evidence from a Meta-analysis of the Human Neuroimaging Literature.” Cerebral Cortex 5: 1910–1922. https://doi.org/10.1093/cercor/bhv001

Moser, M. B., D. C. Rowland and E. I. Moser. 2015. “Place Cells, Grid Cells and Memory.” Cold Spring Harbor Perspectives in Biology 7. https://doi.org/10.1101/cshperspect.a021808

Peoples, H. C., P. Duda and F. W. Marlowe. 2016. “Hunter-Gatherers and the Origins of Religion.” Human Nature 27: 261–282. https://doi.org/10.1007/s12110-016-9260-0

Purzycki, B. G., C. Apicella, Q. Atkinson, E. Cohen, R. A. McNamara, A. K. Willard, D. Xygalatas, A. Norenzayan and J. Henrich. 2016. “Moralistic Gods, Supernatural Punishment and the Expansion of Human Sociality.” Nature 530(7590): 327–330. https://doi.org/10.1038/nature16980

Sosis, R. 2003. “Why Aren’t We All Hutterites? Costly Signaling Theory and Religious Behavior.” Human Nature 14: 91–127. https://doi.org/10.1007/s12110-003-1000-6

Sosis, R. and E. Bressler. 2003. “Cooperation and Commune Longevity: A Test of the Costly Signaling Theory of Religion.” Cross-Cultural Research 37: 211–239. https://doi.org/10.1177/1069397103037002003

Tomasello, M. 2014. “The Ultra-Social Animal.” European Journal of Social Psychology 44: 187–194. https://doi.org/10.1002/ejsp.2015

Turchin, P. 2015. Ultrasociety: How 10,000 Years of War Made Humans the Greatest Cooperators on Earth. Beresta Books. https://doi.org/10.1073/pnas.1308825110

Turchin P., T. E. Currie, E. A. L. Turner and S. Gavrilets. 2013. “War, Space, and the Evolution of Old World Complex Societies.” Proceedings of the National Academy of Sciences 110: 16384–16389.

Watts, J., S. J. Greenhill, Q. D. Atkinson, T. E. Currie, J. Bulbulia and R. D. Gray. 2015. “Broad Supernatural Punishment but Not Moralizing High Gods Precede the Evolution of Political Complexity in Austronesia.” Proceedings of the Royal Society B. Biological Sciences 282: (1804). https://doi.org/10.1098/rspb.2014.2556

Whiten, A. 2013. “Humans Are Not Alone in Computing How Others See the World.” Animal Behaviour 86: 213–221. https://doi.org/10.1016/j.anbehav.2013.04.021