Publications (late drafts of published papers)
   Cultural versus Reproductive Success: Why does economic development bring new tradeoffs? To be published in American Journal of Human Biology
   Why do people become modern? A Darwinian mechanism. Population and Development Review, 35(1), 117-158. 2009. (with Peter Richerson)
   Is religion adaptive? Yes, no, neutral, but mostly we don't know. In: The Evolution of Religion: Studies, Theories, & Critiques. Edited by Joseph Bulbulia, Richard Sosis, Erica Harris, Russell Genet, and Karen Wyman. Collins Foundation Press. 2008. (with Peter Richerson)
   Influences on communication about reproduction: The cultural evolution of low fertility. Evolution and Human Behavior, 28, 199-210. (2007) (with Tom Postmes, Stephen Lea, Paul Webley, Peter Richerson and Richard McElreath)
   Cultural evolution and the shaping of cultural diversity. In S. Kitayama & D. Cohen (Eds.), Handbook of cultural diversity. New York: Guilford Press. (2007) (with Peter Richerson and Rob Boyd)
   Prospects for an evolutionary economic psychology: Buying and consumption as a test case. Max Planck Institute of Economics, Evolutionary Economics Group in its series Papers on Economics and Evolution. (2007) (with Stephen Lea)
   Why are modern families small? Toward an evolutionary and cultural explanation for the demographic transition. Personality And Social Psychology Review, 9(4), 360-375. (2005) (with Tom Postmes, Stephen Lea and Paul Webley.)