Thirty institutionalized mildly retarded adolescent Ss and 30 matched MA elementary school nonretarded Ss were presented 18 items for five free-recall trials in a study of basic determinants of clustering behavior (the recall of sequences of related items following their random presentation). (Author/DB)

A 12-item stimulus list composed of three conceptual categories, each with two low- and two high- associated word pairs, was presented for free Ss recall to 20 educable mentally retarded (EMR) preadolescents, 20 EMR adolescents, and 20 nonretarded fourth-grade children who showed associative clustering in accordance with preexperimental interitem…

Effects of object training and photograph training on comprehension of category labels by 10 severely mentally retarded children and adolescents were explored. Results indicated that acquisition and transfer did not differ, yet generalization was significantly more accurate with objects than with photographs. Futhermore, generalization was…