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

Stress often affects our social lives. When undergoing high-level or persistent stress,
individuals frequently retract from social interactions and become irritable and hostile …

Marking a decade since the publication of “The weirdest people in the world,” this special
issue is dedicated to exploring how to improve the quality of the science produced by the …

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 …

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 …

A growing body of empirical work measuring different types of cultural traits has shown that
culture matters for a variety of economic outcomes. This paper focuses on one specific …

Recent studies have proposed that social norms play a key role in motivating human
cooperation and in explaining the unique scale and cultural diversity of our prosociality …

Does political violence leave a lasting legacy on identities, attitudes, and behaviors? We
argue that violence shapes the identities of victims and that families transmit these effects …

We use a series of field experiments in rural Burundi to examine the impact of exposure to
conflict on social, risk, and time preferences. We find that conflict affects behavior …

We study the long-run effects of forced migration on investment in education. After World
War II, millions of Poles were forcibly uprooted from the Kresy territories of eastern Poland …