In more than 95% of mammalian species, males provide little direct investment in the well-
being of their offspring. Humans are one notable exception to this pattern and, to date, the …

We propose that moral condemnation functions to guide bystanders to choose the same
side as other bystanders in disputes. Humans interact in dense social networks, and this …

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 …

Somewhere in Africa, more than a million years ago, a line of apes began to rear their young
differently than their Great Ape ancestors. From this new form of care came new ways of …

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 …

This chapter considers the phenomenon of human paternal investment in terms of the
benefits of providing care to children and the costs of investment from the males' …

Written by four leading researchers in the study of prosocial behavior, this book introduces a
new perspective on prosocial behavior for the 21st century. Building on the bystander …

Cooperation among humans is one of the keys to our great evolutionary success. Natalie
and Joseph Henrich examine this phenomena with a unique fusion of theoretical work on …

Why are men, like other primate males, usually the aggressors and risk takers? Why do
women typically have fewer sexual partners? In Why Sex Matters, Bobbi Low ranges from …

This article provides a review of evolutionary theory and empirical research on mate choices
in nonhuman species and uses it as a frame for understanding the how and why of human …