From an evolutionary perspective, morality is a form of cooperation. Cooperation requires
individuals either to suppress their own self-interest or to equate it with that of others. We …

Drawing on an idea proposed by Darwin, it has recently been hypothesized that violent
intergroup conflict might have played a substantial role in the evolution of human …

Two major types of aggression, proactive and reactive, are associated with contrasting
expression, eliciting factors, neural pathways, development, and function. The distinction is …

Willingness to lay down one's life for a group of non-kin, well documented historically and
ethnographically, represents an evolutionary puzzle. Building on research in social …

Chimpanzee and hunter-gatherer intergroup aggression differ in important ways, including
humans having the ability to form peaceful relationships and alliances among groups. This …

Evolutionary anthropologists seek to understand the evolution of warfare across multiple
timescales, from the roots of warfare in the intergroup aggression of our primate ancestors …

A fundamental puzzle of human evolution is how we evolved to cooperate with genetically
unrelated strangers in transient interactions. Group-level selection on culturally differentiated …

Demographic data on wild chimpanzees are crucial for understanding the evolution of
chimpanzee and hominin life histories, but most data come from populations affected by …

Culture is a human universal, yet it is a source of variation in human psychology, behaviour
and development. Developmental researchers are now expanding the geographical scope …

Written by leading theorists and empirical researchers, this book presents new ways of
addressing the old question: Why did religion first emerge and then continue to evolve in all …