The most impressive class difference in one-year-old infants revealed by this study was that lower-class infants vocalized considerably less in the playroom than did middle-class infants. (Authors)

The relationship between preschoolers' motivation and performance and observed paternal behavior is explored. (JMB)

This study analyzes the Object Categorization Test (OCT) and the Picture Categorization Test (PCT) to provide (1) psychometric analysis of the tests, (2) substantive analysis detailing variation in performance level as a function of age, race, class, and sex, and (3) normative data yielding frequencies of various score patterns. Data was taken…

Reports on the findings of a comparative study of mental abilities of Mexican and American children. Discusses age, sex, social class, and urban-rural differences, as well as cultural differences. (SS)

Reexamines Yoruba children from educated and traditional families after five years, finding that those growing up in a privileged environment showed increasingly superior mental scores. (Author/JM)

This report examines the results of a study designed to compare various aspects of sex role development among upper middle, middle, and lower class white and Spanish language heritage children in three different preschool daycare centers. The 168 children studied ranged in age from 30 months to six-and-a-half years. Measuring instruments were…

This study examines the relationship between mother-infant behavior and the infant's performance on perceptual-cognitive tasks as a function of the infant's sex. A total of 189 12-week-old infants and their mothers were observed in their homes during 2 hours of infant awake time. In addition, the Mental Development Index (MDI) of the Bayley Scales…

This interview study gathered information about the prior knowledge and thinking of kindergarten to third- graders regarding the supply of water, heat, and light to modern homes. Findings indicated that students possessed only limited and spotty knowledge about utilities in modern homes. Within general trends, there was evidence of growth in…

Focusing on the acquisition of science processes, a study was made of the relationship of acculturation and social class to cognitive development among 1,677 lower and lower middle class students enrolled in the public high schools of three rural, 11 semi-urban, and three urban communities. Acculturation was defined at the community level in terms…

This study delineates the relationships between social background, classroom experience, and academic abilities. Classroom experience is mainly judged in terms of students' affective dispositions. The objective is to clarify how these dispositions are shaped by the personal and situational factors in a child's social background, and then how they,…

This study demonstrated the effectiveness of a reliable, inexpensive method for observing fathers interacting with their preschool children in the home. Fathers in 180 white families were interviewed about their child rearing attitudes and practices, and observed while playing games with their four-year old children. When a factor analysis of the…

Discusses: (1) potential advantages of learning computer programing, (2) performances of males and females in middle school programing courses, (3) problems teachers face in achieving this potential, and (4) participation of males and females in programing courses. Results show females, on the average, perform as well as or better than males.…

Examined how child care experiences related to cognitive and language development from birth through age 3. Found that care quality was modestly related to cognitive and language outcomes, after adjusting for several factors. Cumulative experience in center-based care related to better outcomes than did experience in other care. Children in…

Investigated effects of program auspice (nonprofit versus profit child care), adult-to-child ratios, and class age span on teaching and on preschoolers' social and cognitive development. Found that age, gender, social background, and age span were significant predictors of children's social and cognitive development; adult-to-child ratio and…

This study investigates the development of multiplicative classification skills in lower class black and middle class white children on tasks which contain either three-dimensional objects or two-dimensional pictorial representations of the same objects. Multiplicative classification refers to the simultaneous classification of objects into two or…