Five groups of children, ranging in age from 4 to 11 years, were observed for instances of immediate imitation of peers in a free-play setting. Results showed that imitation decreased with age, that more verbal than motor acts were imitated, and that dominant children were imitated more often. (Author/JMB)

Studied the sex-role concepts, personality adjustment, and academic achievement of 223 10-year-old girls and boys with either full-time employed or nonemployed mothers from working-class or middle-class families. (Author/JMB)

Videotapes of elementary school children watching a standard 15-minute television presentation were analyzed for attention to television, viewing patterns, and alternate activities. Recognition memory of auditory and visual content of the commercials and of the products was tested. Children's behavior during the program and during the commercials…

Results indicated that after partialing out CA and MA, number of years in the institution was negatively correlated with success in visually directed object manipulation, social imitation, and purposeful, constructive activities for 103 profoundly retarded residents. (Author/JMB)

Discriminant function analyses suggested that the most efficient predictors and accurate discriminators of continuing infant risk were: the Parmelee obstetric and postnatal complications scores and the Brazelton interactive and motoric process scores at birth; the Denver rating, mother-infant interaction, and Carey temperament ratings at 4 months;…

Results were interpreted as suggesting that sociocultural factors may change the rate of development but not its course. (Author/JMB)

A sample of 176 students in grades 2-12 were tested for visual acuity as a function of minimally resolvable red, yellow, green, and blue lines. (Author/JMB)

Three vignettes describing characters who exhibited disordered (antisocial, withdrawn, or self-punitive) behavior were read to second-, fourth-, and sixth-grade children. The children were asked what caused the behaviors, whether characters wanted to behave as they did, and whether and how characters could change their behavior. (Author/JMB)

Three experiments (simple versus choice reaction time, Posner letter identification, and Sternberg memory scanning) attempted to determine whether reliable individual differences in cognitive processing exist in children and, if so, whether these differences are systematically related to age and ability. (Author/JMB)

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…

A sample of 48 preschoolers were asked to ride a tricycle appropriately following commands presented at 3-second intervals. Half of the children were also asked to repeat the commands aloud. Results are presented for frequency of inappropriate motor activity and reaction times. (Author/JMB)