2010. "Markets, religion, community size and the evolution of fairness and punishment." (with J. Henrich, R. McElreath, J. Ensminger, A. Barr, C. Barrett, A. Bolyanatz, J.C. Cardenas, M. Gurven, E. Gwako, N. Henrich, C. Lesorogol, F. Marlowe, and J. Ziker). Science 327:1480-1484.
2009. "Breastfeeding structure as a test of parental investment theory in Papua New Guinea." American Journal of Human Biology 21:635-642.
2008. "More ‘altruistic’ punishment in larger societies." (with F.W. Marlowe, J.C. Berbesque, A. Barr, C. Barrett, A. Bolyanatz, J.C. Cardenas, J. Ensminger, M. Gurven, L. Gwako, J. Henrich, N. Henrich, C. Lesorogol, and R. McElreath). Proceedings of the Royal Society (London B) 275:587-590.
2007. "Diagnosis of rickets and reassessment of prevalence among rural children in northern China." (with M.A. Strand, J. Perry, M. Jin, P.R. Fischer, P. Zhang, W. Xi, and S. Li). Pediatrics International 49:202-209.
2006. "Costly punishment across human societies." (with J. Henrich, R. McElreath, J. Ensminger, A. Barr, C. Barrett, A. Bolyanatz, J.C. Cardenas, M. Gurven, L. Gwako, N. Henrich, C. Lesorogol, F. Marlowe, and J. Ziker). Science 312:1767-1770.
2005. "'Economic Man' in cross-cultural perspective: behavioral experiments in 15 small scale societies." (with J. Henrich, R. Boyd, S. Bowles, C. Camerer, E. Fehr, H. Gintis, R. McElreath, M. Alvard, A. Barr, J. Ensminger, N.S. Henrich, K. Hill, F. Gil-White, M. Gurven, F. Marlowe, and J.Q. Patton). Behavioral and Brain Sciences 28:795-855.
2004. "Market integration, reciprocity and fairness in rural Papua New Guinea: results from a two-village ultimatum game study." In J. Henrich, R. Boyd, S. Bowles, C. Camerer, E. Fehr and H. Gintis (eds.) Foundations of Human Sociality: Economic Experiments and Ethnographic Evidence from Fifteen Small-Scale Societies. Oxford University Press. pp. 232-259.
2003. "Selfishness and fairness in economic and evolutionary perspective: An experimental economic study in Papua New Guinea." Current Anthropology 44:432-438.
2002. "Somatic versus reproductive energy allocation in Papua New Guinea: life history theory and public policy." American Journal of Human Biology 14:621-626.