Examined whether kindergarten and first-grade children give sex-biased responses if reinforced and/or triggered by language, specifically pronouns, that they hear. Results supported the pronomial dominance theory of pronoun functioning for young children. Results also suggest that boys but not girls use a self-imaging response to neutral…

Assessed temperament of newborn twins using comprehensive neonatal exam that focused on irritability, resistance to soothing activity, and reinforcement value. Some infants were later assessed at 9 months. Emotional activity appeared to be core dimension stretching over ages and is discussed in relation to formulations of infant temperament.…

Influence of others' emotions on the emotions and aggression of 2-year-olds was examined. Dyads of familiar peers were exposed during play to a sequence of experimental manipulations of background emotions of warmth and anger. Theoretical and practical implications of sensitivity to others' conflicts and interpersonal problems in toddlers are also…

Two studies illustrating a methodology for describing similarities and distinctions between related constructs are reported. In Study 1, psychologists described behavioral and personality characteristics of preschool children through definitions of social competence and self-esteem using Q-set items. In Study 2, the relation between conceptual…

Relation between age and helping behavior was examined in an experimental study in which children directly observed an emergency and had opportunity to intervene. A second study was then conducted, in which an emergency was staged, in order to elicit comments about factors that may inhibit helping behavior. Findings indicated a relationship…

Examined effects of parents' perceptions of infant temperament on personality change during transition to parenthood. Using self-rating scales, both global/trait and situation-specific/state measures were obtained from new parent and childless couples for efficacy expectations, personal control, anxiety, and depression. Differential results were…

Investigating relationship between infants' visual and tactual exploration, looking and touching responses of 6-month-olds to objects only visually or tactually novel were observed. Results indicated infants were capable of tactual recognition memory, that temperature was salient object property, and that visual and tactual exploration are not…

Eight-week-old infants learned to execute an operant footkick to produce crib mobile movement in one of two conditions: training duration on (1) varied within single session and (2) consistent across multiple sessions. Results, in contrast with data from 3-month-olds, demonstrated that conditions of original learning influence immediate and…

Deferred imitation of object-related actions was studied at two ages, 12 and 18 months, to examine development of competence in observational learning. Three task categories were investigated: simple/single reiterative, and sequentially coordinated actions. Examination of partial successes at both ages was useful for suggesting phases in…

Interests of preschool children were naturalistically identified through patterns of attention in the classroom and were related to assessing (1) direction of attentional shift, (2) level of recognition, and (3) likelihood of recall. Findings are interpreted in terms of cognitive/affective conceptualization of interest as central figure of…

Experiments were conducted to explore the operation of retrieval processes in elementary age children's active rehearsal strategies. Using free-recall tasks, subjects were given instructions in active rehearsal as well as supports that might facilitate retrieval operation. Findings suggested that retrieval per se was not necessary for beneficial…

Overt rehearsal and free recall performance was analyzed longitudinally in two experimental testing sessions at 7 and later at 9 years of age. Measures of short- and long-term memory recall, and two measures of input processing were obtained. Significant increases between age levels were exhibited by all variables except short-term memory.…

A longitudinal study examined (1) development of relationship between physical maturation rate and cognitive performance as children become adolescent and (2) specific components of cognitive processing linked to physical maturation-related differences in performance on cognitive ability tasks. Differences were detected on cognitive process tasks.…

Tested whether or not cognitive development (as measured by mental capacity) and cognitive style (as measured by field-dependence/independence) are different dimensions. Results are discussed with regard to Pascual-Leone's model of cognitive development, relevance to stylistic dimension of reflection/impulsivity, and educational implications.…

Examined development of conditional reasoning from perspective of competence-moderator-performance approach. Effects of task interpretation and cognitive style as moderator variables for conditional reasoning were examined with 8th, 10th and 12th graders. Results indicated that only 12th graders benefit from training and training generalized to…