Israeli kibbutz and city children aged 8-11 years were compared on cooperative-competitive behavior. City children from the U.S. were also included in one of the comparisons. Kibbutz children were more cooperative than either Israeli or U.S. city children. (ST)

Fathers were compared to mothers and strangers as elicitors of attachment behavior in infants. Infants usually preferred their mothers as measured by length of time taken to approach mother and use of mother as secure base. (ST)

Tested kindergarten, first-, second-, and third-grade children to determine if other developmental changes in drawings might have obscured an underlying change in the tendency to seriate. (Author/SDH)

Appraised cognitive patterning and development for 142 pairs of twins at 4, 5, and 6 years of age. From the results it was inferred that within a broad range of home environments, the genotype exerts a significant influence on the child's cognitive development. (Author/SDH)

Investigated the effects of perceptual differentiation in groups and assessed its relation to intergroup attitudes in children Subjects were black children and white children from the second, fourth and sixth grades. (SDH)

Investigated were sex-related differences in the deprivation-enhancement pattern of verbal fantasies and fantasy involving dramatic play production. Subjects were 45 children of school-entrance age and 47 preadolescents. The findings are discussed in terms of boys' and girls' sexual identity. (SDH)

Investigated the premise that differences in developmental patterns as recorded on a scored biodata form are related to differences in verbal behavior as evidenced in six protocols derived from responses to the Kent-Rosanoff Word Association Test. Subjects were 110 female college students. (SDH)

Compared retention functions for children with those for young adults and elderly subjects in continuous recognition memory for words over retention intervals ranging from 2 minutes to 2 hours. (SDH)

Examined whether adult age differences in free recall of categorized lists may be attributed to deterioration of the stored information, inaccessibility of the stored information, or both. (SDH)

Investigated the general relationship between children's performance on social and physical measures of cognitive functioning, possible sex differences in performance on the two types of tasks, and the relationship between boys' and girls' performances on these tasks and age and IQ. (SDH)

Studied the enjoyment and comprehension of riddles and nonriddles by first, third, and fifth grade normal children. Also investigated the relationship of sex to the enjoyment of humor. (SDH)