Two studies with 3-, 4-, and 5-year-olds examined whether young children can differentiate expertise in the minds of others. Findings indicated that all children could correctly attribute observable knowledge to familiar experts, such as a car mechanic. Preschoolers had difficulty making attribution of knowledge of scientific principles to…

Examined qualitative developmental change in the use of category organization between ages 8 and 10 and the supportive functions of task environment and category knowledge in this development. Results support the hypothesis that most 10 year olds are capable of strategically activating category knowledge in appropriate task environments when items…

Second and fourth graders were classified according to their knowledge of soccer and their IQ and given two sort-recall tasks. Results demonstrated that the knowledge base played an important role in children's memory. Domain knowledge could not fully eliminate the effects of IQ on sort-recall tasks using domain-related materials. (GLR)