Research Findings: Measuring toddlers' cortisol levels both in childcare and at home and their relation to child- and childcare-related factors may help to identify stress-inducing childcare practices and children who are more vulnerable to stress in childcare. Accordingly, toddlers' (n = 320, 51.2% female, mean age = 26.8 months) cortisol levels…

Research Findings Research suggests children from low-income environments have vocabularies that differ from those of their higher-income peers. They may have basic knowledge of many words of which children from higher income environments have acquired sub- or supra-ordinate knowledge. This study sought to determine if children from low-income…

Research Findings: Drawing from a Dutch sample of 113 Dutch children (M age = 37 months, SD = 3.5) from 37 early care and education classrooms (19 child care centers and 18 preschools), this study examined whether the relation between classroom emotional and behavioral support and children's observed social integration and positive mood in a play…

Research Findings: The transition to school is a major developmental milestone, and behavior tendencies already evident at the point of school entry can impact upon a child's subsequent social and academic adjustment. The current study aimed to investigate stability and change in the social behavior of girls and boys across the transition from day…

Explored externalizing behavior problems in suburban Head Start children. Found parents identified almost one-quarter of children as having externalizing problems in the borderline/clinical range, with twice as many girls as boys having borderline/clinical levels of behavior problems. Found children with parent-identified externalizing problems…

One aspect of ethological methodology, behavioral categorization, is applied to the study of young children's social behavior in preschool classrooms. Studies are reviewed and recommendations for future use of ethological methods, with specific reference to categorizing children's play, are offered. (LB)

Examined behavior problems of African American children attending Head Start in violent neighborhoods. Found Child Behavior Checklist externalization scores significantly higher than standardization sample; higher percentages of boys than girls had severe internalizing problems; higher percentages of girls than boys had severe externalizing…

Examined the incidence of "romantic" dyads, same-sex friendship dyads, and cross-sex friendship dyads in preschools and day-care centers. Behavior patterns that characterize these dyads are described. It is maintained that results suggest that there are romances between preschoolers. (BG)

Notes the omission of a historical perspective in the research papers in this special issue on prosocial and aggressive play. Maintains that the past several hundred years can be characterized as a time of domesticating children's play, and that more research on rough-and-tumble play is needed. (LB)

A commentary on the articles in this special issue addresses the themes of the origins and consequences of children's adversarial social roles and behaviors; children's peer relationships as a context for social learning and development; and linkages between the family and peer systems. (LB)

A total of 136 mothers of preschool-age children participated in interviews about their disciplinary style. Children of power-assertive mothers engaged in more antisocial or disruptive behavior than other children and expected successful instrumental outcomes for hostile methods of resolving peer conflict. (LB)

Assessed young children's perceptions about what misconduct behaviors peers are likely to commit at school and the grocery store. Found more moral than conventional misbehaviors were generated; moral acts were expected more often at school whereas conventional misbehaviors were expected in both contexts; and expectations of peers' misbehaviors…

Reports two studies of adolescent perceptions of playful and aggressive fighting. Results suggest that some bouts of playful fighting are used during adolescence to settle disputes about dominance and that aggression may be introduced into playful fighting to settle dominance disputes. (LB)

Presents data that establish the convergent and discriminant construct validity of a new behavior-rating scale for use with the early childhood-preschool population, the Preschool and Kindergarten Behavior Scales (PKBS). The scale appears to show promise as a research tool, screening device, and assessment instrument for assessing social-emotional…

The patterns of cognitive play of 28 African-American and Euro-American preschool children with intellectual disabilities are reported. Fourteen children representing each group, matched on developmental age and family variables, were observed playing independently at home. The pattern of African-American children's play was more reflective of…