This study compared the effects of two types of incidental learning paradigms and examined the influence of different kinds of stimulus relationships on first and sixth graders' selective learning processes. (GO)

Peer and adult evaluators were used to examine sex differences in responses of 108 fifth graders to failure feedback. Performance in boys improved with feedback from adult agents but did not change with peer feedback. Performance in girls improved with peer feedback but showed little improvement with adult feedback. (GO)

Studied the relationship between mental age and progression toward Piaget's stages of concrete operations and formal operations in a sample of middle class children. Formal operations in preadolescence and adulthood are discussed in relation to IQ. (GO)

Studied the establishment of the reliability of an instrument for assessing developmental stages and the relation between reliability and sequentiality of the stages. (GO)

Looked for evidence of an intermediate stage between the second and third stages in multiple seriation during which subjects seriate the material on one dimension and classify it on the other. Fine grained analysis of stages is considered useful in elucidating the mechanisms of progression through a stage sequence. (GO)

Studied the relation between rehearsal and recall in kindergarten, third- and sixth-grade children. (GO)

Studied the hypothesis that adult acceptance and supportiveness of a child has a facilitative effect on the child's early curiosity and exploratory behavior. (GO)

Rhesus monkeys were reared in total isolation, in partial isolation, or under normal conditions with access to mothers and peers. Each group was compared on the rate of acquisition of a simple operant response. (GO)

Recorded the pattern of crying in neonates who were responding to natural infant cries, synthetic cries, and silence. (GO)

This study examined the relations between attitudes and cognitive functioning in 950 Israeli seventh grade students. In the lowest socioeconomic group, locus of control was the most potent attitude variable while in the higher socioeconomic groups, self-concept and aspirations were most strongly associated with cognitive functioning. (JMB)

To examine the ability of the correction factor epsilon to counteract statistical bias in univariate analysis, an analysis of variance (adjusted by epsilon) and a multivariate analysis of variance were performed on the same data. The results indicated that univariate analysis is a fully protected design when used with epsilon. (JMB)

This experiment evaluated the contributions of frequency and contingency of reinforcement to the deprivation-satiation phenomenon. The findings indicated that the perceived contingency of reinforcement is a more powerful determinant of its subsequent reinforcement effectiveness than is its frequency. (JMB)

Males and females in grades 5-11 were asked to take a Thematic Apperception-like measure and to perform a series of tasks in competitive and non-competitive conditions. The results suggest that the motive to avoid success affects males and young females differently than it does older females. (JMB)

This study investigated the emergence of combinatorial competence in early adolescence and the effectiveness of a programmed discovery training procedure. Significant increases in combinatorial skill with age were shown; it was found that the expression of this skill was significantly facilitated if problems involved concrete material of low…

This study was designed to determine whether the effectiveness of stimulus intensity declines with age. The results indicated that infants 10 weeks and younger responded on the basis of size, while infants between 10 and 24 weeks looked more at a bull's-eye than at a striped pattern regardless of size. (JMB)