Young people's reasoning about exclusion in novel groups.

This study examined children's and adolescents' reasoning about the exclusion of others in peer and school contexts. Participants (80 8-year-olds, 85 11-year-olds, 74 14-year-olds, and 73 20-year-olds) were asked to judge and reason about the acceptability of exclusion from novel groups by children and school principals. Three contexts for exclusion between two groups were systematically varied: unequal economic status, geographical location, and a control (no reason provided for group differences).