Tatsuya Kameda: Hokkaido University Department of Behavioral ScienceFeeling and expressing emotions appropriately in the right context is an essential component of social behavior. It has been suggested that emotional functioning has been weakened among contemporary Japanese youth, who exhibit acute social withdrawal, a "cultural pathology" known as Hikikomori (Hattori, 2005; Zielenziger, 2006). Assuming that Hikikomori […]

Peter DeScioli: Chapman University, Economic Science InstituteExploration of the cognitive systems underlying human friendship will be advanced by identifying the biological functions these systems perform. Here I propose that human friendship results from cognitive mechanisms designed to assemble support groups for potential conflicts. I draw on game theory to identify computations about friends that can […]

Caleb Finch: USC Davis School of GerontologyHuman lifespans have increased remarkably from the 20 year life expectancy (LE) of the great apes. The normative 40 y LE of pre-industrial peoples has recently risen to about 80 y in privileged populations during the last 200 years. I propose that diet and infections are key to understanding […]

Karthik Panchanathan: UCLA Department of AnthropologyBehavioral economics studies have shown people to have other-regarding social preferences. In the Dictator Game, for example, dictators transfer some portion of their endowment to recipients, who start out without an endowment. If people were self-interested, those assigned the role of dictator would keep all of their endowment; those assigned […]

James Fowler: UCSD Political Science DepartmentSocial networks exhibit strikingly systematic patterns across a wide range of human contexts. While genetic variation accounts for a significant portion of the variation in many complex social behaviors, the heritability of egocentric social network attributes is unknown. Here we show that three of these attributes (in-degree, transitivity, and centrality) […]

Nathan Bailey: UC Riverside Department of BiologySame-sex mating behavior has been extensively documented in non-human animals, but we still know relatively little about its evolutionary impact. What evidence exists that same-sex sexual behavior can be adaptive? Do the genetic and physiological mechanisms underlying same-sex mating help explain its ultimate cause and maintenance in populations? How […]

Robert Boyd: UCLA Department of AnthropologyIn this talk I explain how culturally heritable differences in wealth between social groups can arise and be maintained even when the only adaptive learning process driving cultural evolution increases individuals' economic gains. The key assumptions are that human populations are structured into groups and that cultural learning is more […]

David Sloan Wilson: SUNY Binghamton Department of Biological Sciences & Department of AnthropologyEvolutionary theory is rapidly expanding beyond the biological sciences to include all human-related subjects in academia. Since evolution is fundamentally about organisms in relation to their environment, basic scientific research needs to focus on people from all walks of life, as they go […]

Daniel Nettle: Newcastle University Centre for Behaviour and EvolutionEven in the most developed countries, many people do not accept the theory of evolution as true. Whilst there are cultural and ideological reasons for this, part of the issue is that evolutionary ideas appear to violate certain intuitive beliefs. Even more interestingly, recent research has shown […]

Patricia Gowaty: UCLA Department of Ecology and Evolutionary BehaviorDo genes for choosy females and indiscriminate mates determine typical sex roles; or, do ecological and social constraints determine sex roles? Or is sex role determination due to more complex interactions of sex-associated genes and ecological conditions? Answering this question has been difficult, largely because until now […]