Whereas middle-aged individuals tended to group the entire stimulus array into piles of similar items, the elderly individuals grouped very much as young children do--arranging only a portion of the stimulus array into elaborate designs. (Authors)

The development of multiplicative classificatory skills in children between 4 and 9 years of age was investigated by means of two forms of the matrix-completion task. (Authors)

Investigated developmental trends in organization and free recall as they interact with spatial representation and blocking. Subjects were 695 children in grades 4, 6 and 8. Task factors appeared to interact with developmental trends in both organization and free recall. (GO)

The fact that the suggestion to cluster was capable of offsetting social class differences in recall is discussed in terms of Jensen's recommendations for differential education of middle- and lower-class children. (Authors)

A total of 36 5- and 8-year-old children were tested on cued and noncued recall of a list of 16 words containing either two, four or eight categories. Reported are numbers of words and categories recalled in cued and noncued situations, cluster grouping, age differences and interaction effects. (SDH)

Investigated the development and fragmentation of categories over chronological and mental age without the requisite of free recall. Kindergarten, fourth grade, ninth grade and retarded students labeled and categorized chromatic slides of picturable objects. (GO)

Reports an analyses of ratings on Bayley's Infant Behavior Record and test scores from the Bayley Mental Scale for 60 female and 50 male infants at 6, 12, 18 and 24 months of age. Results are discussed in terms of rank-order correlations, behavioral composite scores and study implications. (Author/SDH)