Compared disyllabic sequences from infants and adults according to their use of frequency, intensity, and duration to mark stress. Concluded that infants in English language environments produce adult-like stress patterns before they produce lexical items, which specify stress. Acoustic and perceptual analyses indicated infants use three acoustic…

Three studies examined lexical categorization in 2-year- olds. Findings indicated that even with minimal opportunities to familiarize themselves with novel artifacts, children generalized their names in accordance with the objects' functions, even when they had to discover the functions on their own or when all the test objects had some…

Three experiments assessed children's abilities to track behavioral, representational, and truth aspects of conventions. Three- and 4-year-olds recognized that conventional stipulations would change behavior, but not how stipulations might affect representations. Three- and 5-year-olds confused pretenses and conventions; 7-year-olds consistently…

Explored influence of changes in kindergartners' knowledge about a protagonist on earlier constructed memories of the story. Found that children's story recall was affected by their prior impressions. Following the second knowledge manipulation, children revised story reports consistent with newly acquired impressions, suggesting that they had…

Examined social, emotional, and cognitive characteristics of American and Chinese 6-year-olds' narratives. Found that, compared to American children, Chinese children showed greater orientation toward social engagement, greater concern with moral correctness, greater concern with authority, a less autonomous orientation, more expressions of…

Examined the emergence of theory-motivated reasoning biases when early and middle adolescents evaluated evidence either congruent or incongruent to their theories of social class or religion. Found that higher order scientific reasoning was used to reject theory-incongruent evidence; judgmental heuristics were used to evaluate theory-congruent…

Examined the moderating role of individual differences in negative emotionality in the relations of behavioral and attentional regulation to externalizing problem behaviors. Found that at two ages behavioral dysregulation predicted externalizing behavior problems for children both high and low in negative emotionality, whereas prediction of…

Examined impact of experimentally altering mothers' style when discussing sexuality and AIDS with adolescent children. Found that intervention group mothers reduced their amount of speaking, asked more open-ended questions, acted less judgmental, and discussed dating and sexuality more than did control group mothers. Intervention group adolescents…

Examined adolescents' peer structures and the quality of their friendships as antecedents of romantic relationships among 180 high schoolers followed from grade 9 through 11. Found that small groups of close friends predicted other-sex peer networks that, in turn, predicted the emergence of future romantic relationships. Found indirect effects for…

Examined how maternal education, economic conditions, and instrumental support influenced maternal psychological functioning, parenting, and child development among single Black mothers. Found that maternal education positively related to earnings, which, with instrumental support, negatively related to financial strain. Financial strain related…

Examined role of parent-child discourse within a supportive relationship in children's early conscience development. Found that children's attachment security predicted maternal and child references to feelings and moral evaluatives in narratives about previous behavior incidents. Attachment security, shared positive affect between mother and…

Examined relationship between social support and appraisal of life events in predicting adaptive, externalizing, and internalizing behavior in 265 seven- to 13-year-olds. Found support for both the main effects and moderator models of the association between life events and global social support. Gender differences were found. Appraisal of life…

Compared adopted and nonadopted adolescents across variety of measures. Found that adopted adolescents were at higher risk in all domains examined, including school achievement and problems, psychological well-being, and physical health. Effect sizes for group differences were larger for males, younger or older adolescents, Hispanics or Asians,…

Investigated the role of physiological self-regulation (cardiac vagal tone) in information processing (habituation) in infants. Found that decreases in vagal tone consistently related to habituation efficiency at 2 and 5 months. Within- and between- age suppression of vagal tone predicted accumulated looking time (ALT), but ALT did not predict…

Examined the nature of repetitive, ritualistic, and compulsive-like behaviors in typically developing and children and individuals with Down Syndrome (DS), matched on mental age (MA). Found that that both groups showed similar MA-related changes in compulsive-like behaviors. Younger children showed more compulsive-like behaviors than older.…