Two experiments study the effects of age and sex on the ability of 3-1/2- to 6-year-old children to use nonverbal cues in identifying affiliative relationships. (SDH)

Discrimination learning studied in 3-year-olds, indicated that children over 30 months of age did better than younger children, and girls learned faster than boys after the first problem. (ST)

Study supported through a U. S. Public Health Service Fellowship award to Ludwig Immergluck for his work at the Harvard Florence Research Project in Florence, Italy. (AP)

The primary purpose of this study was to examine whether a general perceptual model developed by Vitz and Todd (1971), capable of dealing with multiple determinants of attending, is useful for understanding infant attending. The model, previously used in research with adults, assumes that perception can be represented as a stochastic sampling…

Results of a study indicated that, as age increased from seven to 20 years, reaction time decreased, with males having a more rapid reaction time than females. Beginning at age 10 or 11, subjects developed better motor plans and relied less on rapid reaction time to achieve good anticipation time. (FG)

The categories a person uses in describing others are related to the perceiver's own socialization experiences. Gender and generation of the respondent affect the way individuals describe people they know but not to as great a degree as previously assumed. (Author)

A total of 416 elementary school children described in writing what their grandparents meant to them. Girls were more likely than boys to mention love. Younger children reported obtaining more affective provisions (e.g., attachment and nurturance) from grandparents while older children reported more cognitive provisions (e.g., guidance and pride…

A total of 259 children between 5 and 12 years of age plotted the location and heading of an adult who was standing in their classroom onto a map of the classroom. Older children performed better than younger ones; boys performed better than girls. (MDM)

This study investigated the process of perceptual exploration and organization of children as a function of age and sex in two experiments. In Experiment I, 3- to 5-year-old children named the pictures of nine familiar objects arranged in 3 x 3 matrices (exploration tasks) and indicated preference for objects represented in pairs (pair-completion…

Spatial cognition entails the ability to mentally represent spatial relations and to anticipate the course and outcome of transformations applied to those relations. The developmental histories of four tasks used to assess the maturity of spatial cognition in children are described. Significant effects were found for age, gender, task, and for…

This study was undertaken to determine the relative contribution of age, sex, and three stimulus features (board shape, block arrangement, and block shape) to perceptual accuracy on 39 board/block adaptations of Piaget's three-mountain task. (Author/SB)

Study deals with a comparative developmental analysis of performances on the same task by four age groups. (MB)

Investigated 7-year-olds', 9-year-olds', and adults' ability to classify children's and adults' faces by sex using only biological based internal facial structure. Found that participants categorized adult faces by sex at accuracy levels varying from just above chance (7-year-olds) to nearly perfect (adults). All groups were less accurate for…

A follow-up study was made of cross-sectional research on the development of dichhaptic lateralization. One hundred and eighty students in grades 3, 5, 7, 9, and 11 from two school districts were tested. Participants were 9 boys and 9 girls from each grade level for each district. Subjects were at least 90 percent right-handed, as determined by…