Some of the most fundamental questions concerning our evolutionary origins, our social
relations, and the organization of society are centred around issues of altruism and …

Humans are an ultrasocial species. This sociality, however, cannot be fully explained by the
canonical approaches found in evolutionary biology, psychology, or economics …

Humans are a puzzling species. On the one hand, we struggle to survive on our own in the
wild, often failing to overcome even basic challenges, like obtaining food, building shelters …

Human cooperation is an evolutionary puzzle. Unlike other creatures, people frequently
cooperate with genetically unrelated strangers, often in large groups, with people they will …

Literature Cited to accompany Animal Communication, 2e Page 1 Principles of Animal
Communication, Second Edition Jack W. Bradbury and Sandra L. Vehrencamp Chapter 14 …

Where did we come from? What is our connection with other life forms? What are the
mechanisms of mind that define what it means to be a human being? Evolutionary …

We develop a cultural evolutionary theory of the origins of prosocial religions and apply it to
resolve two puzzles in human psychology and cultural history:(1) the rise of large-scale …

In the past decade, nearly 20 studies have found a strong, persistent pattern in surveys and
behavioral experiments from over 40 countries: individual exposure to war violence tends to …

We examine the characteristics and relative strength of third-party sanctions in a series of
experiments. We hypothesize that egalitarian distribution norms and cooperation norms …

I survey the literature post Ledyard (Handbook of Experimental Economics, ed. by J. Kagel,
A. Roth, Chap. 2, Princeton, Princeton University Press, 1995) on three related issues in …