We hypothesize that broad contact, involving brief interactions with multiple outgroup members, and deep contact, meaning longer interactions with a single outgroup member, play distinct roles in shaping intergroup relations. We set up a factory in India and recruited Hindu and Muslim men to...

In prosocial decisions, decision-makers are inherently uncertain about how their decisions impact others’ utility – we call this interpersonal uncertainty. We show that people’s response to interpersonal uncertainty shapes well-known patterns of prosocial behavior. First, using standard...