Examined the role of attention in explaining dyadic and triadic joint attention difficulties in autism in three experiments. Found that children with autism were less responsive than developmentally delayed controls in orienting to attention bids and in following a human head-turn cue yet had no difficulty in shifting attention and were faster in…

This study investigated relations among preschoolers' attachment security to mothers, family stress, and peer and teacher relationships. Less family stress was related to more secure mother-child relationships. Less securely attached children expressed more anger-aggression in preschools. Boys' family stress was related to anger- aggression and…

Observed 40 married couples interacting with their 6- to 8-year-old sons after pleasant and conflictual discussions to examine indirect effects of marital conflict on children through their disruptions in family alliances and parenting. Found stronger evidence than previously available of a causal link between conflict and disrupted parenting.…

Examined subtypes of "popular" among 452 fourth- through sixth-grade boys. Found that peers perceived popular-prosocial boys as cool, athletic, leaders, cooperative, studious, not shy, and nonaggressive. They perceived popular-antisocial boys as cool, athletic, and antisocial. Findings suggested that highly aggressive boys can be among the most…

Mental state language was examined in Mandarin- speaking and Cantonese-speaking toddlers. Results suggested that theory-of-mind development was similar to that in English, with early use of desire terms followed by other mental state references. Much earlier emergence of desire terms and infrequent use of thinking terms suggests cultural…

Examined the relation between destructive sibling conflict and conduct problems among 5-year-old boys and their close-age siblings from low-income families. Found that the interaction between destructive sibling conflict and rejecting parenting predicted aggressive behavior problems across time and informants. Sibling conflict was related…

Measured vagal tone and heart period at 2 months and 5 years in children and their mothers to evaluate the development of vagal regulation at rest and during an environmental task. Found that children reached adult levels of baseline vagal tone by 5 years and did not differ from mothers in baseline-to-task change in vagal tone or heart period.…

Examined understanding of print concepts in preschool children bilingual in English and Hebrew. Found that bilingual children were more advanced than monolinguals, regardless of task (understanding that a printed word's meaning did not change if moved to a new location, making judgments about word length and ignoring the object's size) or whether…

Two studies examined preschoolers' appreciation of how mental states arise. Findings suggest that 3- and 5-year-olds better understood perception-generated beliefs and attitude-generated desires than physiology-generated desires. Four- and 5-year-olds better understood the effects of quantity of experience than of time of experience on…

Examined covert attention shifts in infants with event-related potentials (ERPs). Found that reaction time to localize target showed covert attention shifts. There was a larger P1 ERP component on valid trials than on invalid trials or on no-cue control trials. Pre-saccadic ERP potentials in response to target were larger when target was in cued…

Used functional magnetic resonance imaging (fMRI) to examine spatial working memory in 8- to 11-year-olds tested under 3 conditions. Found that subtracting activation of the motor condition from the memory condition revealed activity in dorsal aspects of the prefrontal cortex and in the posterior parietal and anterior cingulate cortex. Analysis of…

Examined whether gender differences in affiliative aspects of dyadic conversations occur because girls are more oriented than boys toward goals focused on others. Found that high-affiliation conversations and mutual-participation goals were more prevalent in female than in male and mixed- gender dyads. Mutual-participation goals mediated gender…

Three experiments investigated whether theory-of-mind deficits and weak central coherence might be functionally related. Found that theory-of-mind performance was inversely related to a measure of central coherence bias in the general population. Poor theory-of-mind performance was linked to weak central coherence among children with typical…

Critically examines three propositions of Harris' group socialization theory (1995, 1998) related to parents' long-term effects on children's psychological characteristics, peer groups' influences, and the nature of dyadic relationships. Maintains that available evidence is more consistent with a model of multiple socialization agents. Proposes a…

Maintains that context effects and genetic effects are among the confounding factors that make it impossible to reject the null hypothesis of zero long-term parenting effects on child outcomes. Asserts that group socialization theory attributes outside-the-home socialization to identification with a peer group and assimilation of group norms, but…