Schulz, J, J Beauchamp, D Bahrami-Rad, and J Henrich. “The church, intensive kinship, and global psychological variation.” Science 366, no. 707 (2019): 1-12. Data PDF
Lang, M, B. G. Purzycki, C. L. Apicella, Q. D. Atkinson, A Bolyanatz, E Cohen, C Handley, et al.Moralizing gods, impartiality, and religious parochialism across 15 societies.” Proceedings of the Royal Society B: Biological Sciences 286 (2019). Publisher's Version
Henrich, J., M. Bauer, A Cassar, J Chytilova, and B. G. Purzycki. “War increases religiosity.” Nature Human Behavior: Letter (2019). Publisher's Version PDF
Purzycki, B. G., A. Pisor, C. Apicella, Q. Atkinson, E. Cohen, J. Henrich, R. McElreath, et al.The Cognitive and Cultural Foundations of Moral Behavior.” Evolution and Human Behavior 39, no. 5 (2018): 490-501. Online Version
Purzycki, B. G., C. T. Ross, C. Apicella, Q. Atkinson, E. Cohen, R. A. McNamara, A. K. Willard, D. Xygalatas, A. Norenzayan, and J. Henrich. “Material security, life history, and moralistic religions: A cross-cultural examination.” PLoS ONE 13, no. 3 (2018): e0193856. Online Version PDF
Chudek, Maciej, Rita McNamara, Susan Birch, Paul Bloom, and Joseph Henrich. “Do minds switch bodies? Dualist interpretations across ages and societies.” Religion, Brain & Behavior 8, no. 4 (2018): 354-368. Online Version
Purzycki, Benjamin Grant, Joseph Henrich, and Ara Norenzayan, ed. The Evolution of Religion and Morality. Religion, Brain and Behavior. Vol. 8. Religion, Brain Behavior, 2018. Access Special Issue Online
Purzycki, B. G., J. Henrich, C. Apicella, Q. Atkinson, A. Baimel, E. Cohen, R. A. McNamara, A. K. Willard, D. Xygalatas, and A. Norenzayan. “The evolution of religion and morality: A synthesis of ethnographic and experimental evidence from eight societies.” Religion, Brain and Behavior 8, no. 2 (2018): 101-132. Online Access
McNamara, R. A., and J. Henrich. “Jesus vs. the Ancestors: How specific religious beliefs shape prosociality on Yasawa Island, Fiji.” Religion, Brain and Behavior 8, no. 2 (2018): 185-204. Online Version
Purzycki, Benjamin, Coren L. Apicella, Quentin Atkinson, Emma Cohen, Rita McNamara, Aiyana Willard, Dimitris Xygalatas, Ara Norenzayan, and Joseph Henrich. “Cross-cultural dataset for the Evolution of Religion and Morality Project.” Scientific Data 3, no. 160099 (2016): 10.1038/sdata.2016.99. Online Version with Links to Dataset PDF
Willard, A. K., J. Henrich, and A. Norenzayan. “Memory and Belief in the Transmission of Counterintuitive Content.” Human Nature 27, no. 3 (2016): 221-243. Online Version with Supplemental Materials PDF
Shariff, A. F., A. K. Willard, M. Muthukrishna, S. R. Kramer, and J. Henrich. “What is the association between religious affiliation and children’s altruism?Current Biology 26, no. 15 (2016): R699–R700. Online Version
Purzycki, Benjamin Grant, Coren Apicella, Quentin D. Atkinson, Emma Cohen, Rita Anne McNamara, Aiyana K. Willard, Dimitris Xygalatas, Ara Norenzayan, and Joseph Henrich. “Moralistic gods, supernatural punishment and the expansion of human sociality.” Nature 530, no. 7590 (2016): 327–330. Online Version with Supplementary Materials
Norenzayan, A., A. F. Shariff, W. M. Gervais, A. Willard, R. McNamara, E. Slingerland, and J. Henrich. “The Cultural Evolution of Prosocial Religions.” Behavioral and Brain Sciences 39 (2016): 1-19. Online Version
McNamara, Rita Anne, Ara Norenzayan, and Joseph Henrich. “Supernatural punishment, in-group biases, and material insecurity: Experiments and Ethnography from Yasawa, Fiji.” Religion, Brain & Behavior 6, no. 1 (2016): 34-55. Online Version PDF
Henrich, Joseph, Maciej Chudek, and Robert Boyd. “The Big Man Mechanism: how prestige fosters cooperation and creates prosocial leaders.” Philosophical Transactions of the Royal Society B 370, no. 1683 (2015). Publisher's Version PDF
Henrich, J.Culture and social behavior.” Current Opinion in Behavioral Sciences 3 (2015): 84-89. PDF
The Secret of Our Success: How culture is driving human evolution, domesticating our species, and making us smart
Henrich, Joseph. The Secret of Our Success: How culture is driving human evolution, domesticating our species, and making us smart. Princeton, NJ: Princeton University Press, 2015. Publisher's VersionAbstract

Humans are a puzzling species. On the one hand, we struggle to survive on our own in the wild, often unable to solve basic problems, like obtaining food, building shelters or avoiding predators. On the other hand, human groups have produced innovative technologies, sophisticated languages, and complex institutions that have permitted us to successfully expand into environments across the globe. What has enabled us to dominate such a vast range of environments, more than any other species? The Secret of Our Success lies not in our innate intelligence, but in our collective brains—in the ability of human groups to socially interconnect and to learn from one another.

Drawing insights from lost European explorers, clever chimpanzees, hunter-gatherers, neuroscientists, ancient bones, and the human genome, Joseph Henrich demonstrates how our collective brains have propelled our species’ genetic evolution, and shaped our biology. Our early capacities for learning from others produced many innovations, such as fire, cooking, water containers, plant knowledge and projectile weapons, which in turn drove the expansion of our brains and altered our physiology, anatomy and psychology in crucial ways. Further on, some collective brains generated and recombined powerful concepts, such as the lever, wheel, screw and writing. Henrich shows how our genetics and biology are inextricably interwoven with cultural evolution, and that this unique culture-gene interaction has propelled our species on a unique evolutionary trajectory.

Tracking clues from our ancient past to the present, The Secret of Our Success explores how our cultural and social natures produce a collective intelligence that explains both our species striking uniqueness and odd peculiarities.

Visit the book website here.

Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective
Ensminger, J., and J. Henrich, ed. Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective. New York: Russell Sage Press, 2014. Publisher's VersionAbstract

Questions about the origins of human cooperation have long puzzled and divided scientists. Social norms that foster fair-minded behavior, altruism and collective action undergird the foundations of large-scale human societies, but we know little about how these norms develop or spread, or why the intensity and breadth of human cooperation varies among different populations. What is the connection between social norms that encourage fair dealing and economic growth? How are these social norms related to the emergence of centralized institutions? Informed by a pioneering set of cross-cultural data, Experimenting with Social Norms advances our understanding of the evolution of human cooperation and the expansion of complex societies.

Editors Jean Ensminger and Joseph Henrich present evidence from an exciting collaboration between anthropologists and economists. Using experimental economics games, researchers examined levels of fairness, cooperation, and norms for punishing those who violate expectations of equality across a diverse swath of societies, from hunter-gatherers in Tanzania to a small town in rural Missouri. These experiments tested individuals’ willingness to conduct mutually beneficial transactions with strangers that reap rewards only at the expense of taking a risk on the cooperation of others. The results show a robust relationship between exposure to market economies and social norms that benefit the group over narrow economic self-interest. Levels of fairness and generosity are generally higher among individuals in communities with more integrated markets. Religion also plays a powerful role. Individuals practicing either Islam or Christianity exhibited a stronger sense of fairness, possibly because religions with high moralizing deities, equipped with ample powers to reward and punish, encourage greater prosociality. The size of the settlement also had an impact. People in larger communities were more willing to punish unfairness compared to those in smaller societies. Taken together, the volume supports the hypothesis that social norms evolved over thousands of years to allow strangers in more complex and large settlements to coexist, trade and prosper.

Innovative and ambitious, Experimenting with Social Norms synthesizes an unprecedented analysis of social behavior from an immense range of human societies. The fifteen case studies analyzed in this volume, which include field experiments in Africa, South America, New Guinea, Siberia and the United States, are available for free download on the Foundation’s website.

Hruschka, Daniel Jacob, and Joseph Henrich. “Economic and evolutionary hypotheses for cross-population variation in parochialism.” Frontiers in Human Neuroscience 7, no. 559 (2013): doi: 10.3389/fnhum.2013.00559.Abstract

Human populations differ reliably in the degree to which people favor family, friends, and community members over strangers and outsiders. In the last decade, researchers have begun to propose several economic and evolutionary hypotheses for these cross-population differences in parochialism. In this paper, we outline major current theories and review recent attempts to test them. We also discuss the key methodological challenges in assessing these diverse economic and evolutionary theories for cross-population differences in parochialism.