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

BACKGROUND Traditionally, research into contemporary economic development has taken
a primarily ahistorical approach. The study of the past was relegated to the separate field of …

Can intergroup contact build social cohesion after war? I randomly assigned Iraqi Christians
displaced by the Islamic State of Iraq and Syria (ISIS) to an all-Christian soccer team or to a …

Are mass violence and catastrophes the only forces that can seriously decrease economic
inequality? To judge by thousands of years of history, the answer is yes. Tracing the global …

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 …

Recent studies argue that major crises can have long‐lasting effects on individual behavior.
While most studies focused on natural disasters, we explore the consequences of the global …

How does terrorism affect citizens' political attitudes? Over the years, many scholars have
tried to answer this question. This article performs a meta‐analysis on this literature …

Early research on wartime violence against civilians highlighted a distinction between macro-
and micro-level approaches. Macro-level approaches, grounded in the international …

Can external threats strengthen group identity? A growing body of research in economics
emphasises the importance of cultural attributes such as identity for trust and cooperation …

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 …