The idea that social motivation deficits play a central role in Autism Spectrum Disorders
(ASD) has recently gained increased interest. This constitutes a shift in autism research …

This article evaluates a thesis containing three interconnected propositions. First, romantic
love is a “commitment device” for motivating pair-bonding in humans. Second, pair-bonding …

INTRODUCTION A growing body of research suggests that populations around the globe
vary substantially along several important psychological dimensions and that populations …

Since the late nineteenth century, cultural historians have noted that the importance of love
increased during the Medieval and Early Modern European period (a phenomenon that was …

In this book, Robert L. Kelly challenges the preconceptions that hunter-gatherers were
Paleolithic relics living in a raw state of nature, instead crafting a position that emphasizes …

" Over the last three million years or so, our lineage has diverged sharply from those of our
great ape relatives. Change has been rapid (in evolutionary terms) and pervasive …

The behavior of women and men varies greatly depending on situations, cultures, and
historical periods. This flexibility emerges as men and women tailor their division of labor to …

Humans, unlike any other multicellular species in Earth's history, have emerged as a global
force that is transforming the ecology of an entire planet. It is no longer possible to …

Many researchers assume that until 10–12,000 years ago, humans lived in small, mobile,
relatively egalitarian bands. This “nomadic-egalitarian model” suffuses the social sciences. It …

Social status motivates much of human behavior. However, status may have been a
relatively weak target of selection for much of human evolution if ancestral foragers tended …