Serial habituation of visual fixations was investigated through a design permitting cross-sectional, within-subject longitudinal, cohort longitudinal, and time-lag analyses. Results suggested that for all ages habituation was under way to the parts of the stimulus in order of the realitive saliencies. No one methodology appeared to significantly…

To test the inversion of intensity interpretation based on negative relations between newborn and pre-school intensity behaviors, 106 normal children were examined at the neonatal and pre-school periods. Interpretations of intensity behaviors at both periods and their longitudinal relations are discussed. (Author/SB)

From original data at age 13 years on 386 North American females, statistics are presented for 10 somatic variables. Findings are compared with those of other studies. (Author/SB)

Black and white male schoolchildren evaluated their own performance at a verbal task administered by black and white male experimenters. It was hypothesized that academically successful children would be predisposed to appraise themselves favorably and vice versa. The prediction was upheld in the white experimenter condition but not in the black…

Three experiments were conducted to examine the relationship between developmental differences in reinforcer preference value and in learning-set performance. A second purpose was to investigate ontogenetic differences in the effects of experience with continuous but qualitatively inconsistent reward. (Author/SB)

In a 2x4x2 factorial design, the effects of sex of child, grade and reward-deservedness on sharing candies with another child were studied in 160 children between kindergarten and third grade. Although there were no significant main effects, there was a significant interaction for grade X reward deservedness on sharing. (Author/SB)

This study examines the effects of cooperative versus competitive goal structures on the subsequent intra- and interpersonal behavior of fourth-grade children. Results indicate that the effects of competitively structured environments differ for winners and nonwinners and for boys and girls. (Author/SB)

This study examined the ways in which exposure to moral reasoning statements affected the subsequent behavioral choices of 144 seventh-, eighth- and ninth-grade boys at different stages of moral judgement. The presentation of reasoning had different effects on the behavioral choices of subjects at two different stages. (Author/SB)

First-, fourth-, seventh-, and eleventh-grade boys and girls were interviewed on the topic of deviant behavior among their peers. They were also asked to make deviance judgements on two story characters. The pattern of reaction to the stories was consistent with age-related shifts in the basis for deviant status. (Author/SB)

A total of 24 middle class and 16 lower class preschoolers were observed during free play period on 30 consecutive school days. The behaviors of the children were coded by combining the social play categories of Parten and the cognitive play schemes of Smilansky. Results indicate a significant difference in types of play by class. (Author/SB)

The present studies were designed to test the role of descrepancy between existing cognitive structures and current input and the amount of pleasure derived from successful processing of that input with respect to children's appreciation of humor. (Author/SB)

Perceptual counterparts of a series of conservation of length tests were presented to subjects who were categorized as conservers or nonconservers conservation of length pre-tests, and to conservers and nonconservers given conservation length training. Perceptual performance of the untrained nonconservers was significantly worse than that of the…

This is a developmental study of the effects, and role, of imagery in retrieving information from long-term memory. In two blocks of trails, first graders, fourth graders and adults determined whether or not various animals are characterized by various properties, first upon consultation of a visual image and then without imagery. (Author/SB)

Effects of action content and verbal codability of stimulus pictures, parental occupational status and verbal intelligence upon nonverbal serial recall were investigated in white first graders. (Author/SB)

The present study was designed to investigate the effects of stimulus presentation rate on recall and primacy-recency effects in children. Results indicated that the traditional interpretation of the primacy effect as reflecting long-term memory store may not be valid. (Author/SB)