This study describes a longitudinal design (following subjects described in Rutherford & Rogers [2003, "Journal of Autism and Developmental Disorder", 33, 289-302]) to test for predictors of pretend play competence in a group of children with autism. We tested the hypothesis that developmental change in pretend play performance can be predicted by…

Tests Ausubel's (1960) subsumption theory of learning in the context of children's use of causal and logical connectives. Predicts that the acquisition of prior cognitive structure organizers would facilitate the learning and retention of subsequently presented concepts and logical operations and lead to a decrease of syncretic reasoning and…

Investigates the effects of an advance organizer lesson, presenting high-order science concepts and an elementary problem solving strategy for determining causal relations on children's use of operations of exclusion (as defined by Inhelder and Piaget, 1958). Results suggest that acceptable solutions to problems requiring the operations of…