The aim of this study was to determine how trajectory clusters of social status (social preference and perceived popularity) and behavior (direct aggression and prosocial behavior) from age 9 to age 14 predicted adolescents' bullying participant roles at age 16 and 17 (n = 266). Clusters were identified with multivariate growth mixture modeling…

Inspection of findings from Denney and Ziobrowski (1972), in light of problems of analysis and method, seriously questioned the validity of their reported crossover interaction of clustering criteria with age. In addition, a replication of their experiment, correcting for methodological problems, revealed no interaction of clustering criteria with…

Research on multiracial individuals is often cross-sectional, obscuring the fluid nature of multiracial self-categorization across time. Pathways of racial self-identification are developed from a nationally representative sample of adolescents aged 14-18, measured again 5 years later. A significant proportion of multiracial adolescents change…

Study 1 asked second through sixth graders, who could answer inclusion questions, to answer such questions without empirical information about relative quantity and to predict whether subordinate classes could be made larger than their superordinate classes. In study 2, children's performance in two part-whole domains, classes and collections, was…

Study concerned with the effects of procedural differences on the classification of geometrical stimuli. (Author)

In an attempt to examine the generalizability of the Kendler S-R mediational model of reversal-shift behavior, 60 third-grade children were classified as either verbal mediators or nonmediators on the basis of their performance on an optional-shift discrimination problem. The children's performances were then evaluated on three tasks. (Author/CS)

An investigation of the category-recall relationship using first, third, and fifth graders as subjects. Recall was found to be a function of the number of categories in the sort, and there were no differences in recall among the three retrieval conditions. (Author/SDH)

The most significant finding is that classification according to complete similarity not only occurs much earlier than reported by Inhelder and Piaget, but also does not follow the developmental course reported by Inhelder and Piaget. (Author)

Preschool, first-grade, and fifth-grade children served as Ss in 2 experiments designed to test the developmental hypothesis that memorizing and perceiving are functionally undifferentiated for the young child, with deliberate memorization only gradually emerging as a separate and distinctive form of cognitive encounter with external data.…

Study concerned with the question of why older children remember more in categorized free recall. (Authors/MB)

Study investigates the effects of spatial and temporal grouping on short-term serial recall by elementary school children of three different grade levels. (Authors)

Cluster analytic methods were used to create 4 theorized ethnic identity statuses (achieved, foreclosed, moratorium, and diffused) among 940 African American adolescents (13-17 years old), college students (18-23 years old), and adults (27-78 years old). Evidence for the existence of 4 identity statuses was found across the 3 age groups. The…

This study was designed to contrast children's recall clustering before and after they acquired stable input organizations. A sample of 120 subjects (24 from preschool grades, 1, 4, 7, and college) performed two successively presented, procedurally identical, series of recall-sort-recall tasks. (Author/JMB)