Children correlate infrequent behaviors with minority groups: a case of illusory correlation

Adults perceive an illusory correlation between negative social behaviors and membership in the smaller of two groups — the minority group (Hamilton & Gifford, 1976). Two experiments investigated the development of this illusory correlation. We created pictorial stimuli showing children performing good or bad behaviors. In Experiment 1 we told participants (children in grades 1, 3, 5, and 7 and adults) that each picture depicted a child from one of two groups. Group membership and behavior were uncorrelated, but, like adults, children perceived a correlation between the smaller group and negative behaviors. Children’s attributions of good and bad behaviors to the two groups showed a weak but significant bias. Their estimations of the number of children in each group who behaved badly showed a stronger bias. Children also rated the smaller group more negatively on many dimensions. Experiment 2 showed that the illusory correlation is not dependent on social stimuli. Children performed essentially the same tasks, but good and bad behaviors were replaced by the colors red and green, and the group members were represented as squares and triangles. The results were strikingly similar to those obtained with social stimuli. In both experiments, the strength of the illusory correlation did not vary significantly with age. The results are discussed from the perspective of theories that have been proposed to account for adult behavior and the implications of no developmental trend.