What events trigger causal explanatory reasoning in young children? Children's explanations could be triggered by either consistent events (suggesting that explanations serve a confirmatory function) or inconsistent events (suggesting that they promote discovery of new information). In 2 studies with preschool children (N = 80), events that were…

Three experiments examined how 4- to 10-year-olds' domain knowledge and observation of exemplars interact during concept acquisition and how exposure to novel exemplars causes knowledge revision. In all experiments, prior knowledge and exemplar observation independently influenced children's categorization judgments. Use of prior knowledge was…

Two experiments studied how preschool children acquire a naive theory of kinship (NTK). Overall, results implicate a type of theory building that involves inferences from preexisting knowledge rather than structural change, use of analogy, or acquisition of new knowledge. (DR)