In order to test the hypothesis that the ability to form verbal concepts would increase with age, a test for verbal concept formation was developed and administered to 668 children between the ages of 4 and 9. By varying sentences that describe nonsense figures, 4 variables were systematically explored. (MS)

Eighty first and third graders were presented one of two brief videotaped social interactional episodes. Half viewed an unambiguous tape in which affective response was congruent with situational context; the other half viewed an ambiguous tape in which nonverbal affective response was incongruent with situational context. (MS)

Three experiments evaluated color specificity knowledge and related semantic effects on recognition memory. (Author/SB)

Explored the construction of mathematical proofs through a hidden figure task and a variant of "Mastermind" game with children ages 7-12 years old. Older children were better able to distinguish necessary moves and to recognize sufficient evidence. Modifying the original hidden figure task to reduce its information-processing demands improved…

Psychological and biological reasoning are intertwined yet differentiated in preschoolers' understandings of bodily processes and events. Three studies suggest that preschoolers distinguish biological phenomena from psychological ones in their causal reasoning, although their reasoning about biological phenomena is sometimes influenced by…

Presented a battery of false belief tasks varying in type of belief questioned, target for belief ascription, presentation of reality information, and deception context to Head Start children. Found that performance was better on locations tasks than on contents tasks and with older children compared with younger children and that performance was…

Examined 6-, 9-, and 14-year-olds' imagination of the unknown within a storytelling context. Performed phenomenological analysis of the two youngest groups' drawings and the oldest group's story on the "heffalump" theme. Derived eight categories providing an image-analysis of the concept of the "unknown" structured as "something-otherwise," that…

This study examined 6- to 8-year-old Slovenian children's acquisition of matrix completion proficiency and compared microgenetic and age-related changes on the task. Microgenetic analyses indicated that: variability of children's errors increased before they discovered the correct strategy, the correct strategy became dominant shortly after…

Investigated mechanisms underlying reductions in susceptibility to interference from irrelevant information that are evident in the developing child. Used two experiments requiring attention to one stimulus out of many. Found that age changes in selective attention are mediated to an important extent by changes in the speed and efficiency of…

Examined contribution of temperamental inhibitory control to conscience development. Found longitudinal stability in inhibitory control from toddlerhood to early school age, with inhibitory control increasing with age, and girls outperforming boys. Reaffirmed links between inhibitory control and multiple, diverse measures of children's conscience…

Discusses how friendships are transformed from equality-based exchange relationships during early childhood into need-based communal relationships during adolescence. Builds upon thesis that developmental changes in friendships can best be understood using both deep- and surface- structure levels of analysis. Examines cognitive representations of…

Used hypothetical vignettes to examine 384 preadolescents' understanding of gossip in varying circumstances. Found that children correctly labeled talk about nonpresent others as gossip and considered it inappropriate. Skepticism was higher for gossip than for firsthand information and was greatest with cues suggesting that speakers were…

Three studies examined the age at which children start to use external symbols to aid their memory and how external symbol use affects both memory performance and information allocation strategies. Findings with children in grades 1, 3, 5, and 7 suggest that in mid-childhood, children begin to distribute information actively between internal and…

Five experiments used a categorization habituation-of-looking paradigm to investigate infants' categorization of animals and vehicles based on static versus dynamic attributes of stimuli (color images versus dynamic point-light displays). Findings showed that 6-month-olds categorize animals and vehicles based on static and dynamic information, and…

Examines developmental and individual differences in the effects of gender schematization on young children's memories for gender-typed information, and investigates the interactive effects of children's age, gender schematization, and verbal labeling of information on preschoolers' memories for gender typed information. (JS)