We examined the validity of a measurement system for the study of aggression that distinguishes among four principle dimensions of aggressive behaviour: overt and relational aggression (i.e., the “whats”) and instrumental and reactive aggression (i.e., the “whys”). The sample comprised 1723 adolescents (Grades 5 through 10) from Berlin, Germany. The internal validity of the measurement system was strongly supported, revealing four discrete dimensions of aggression: two overriding forms (overt and relational) and two underlying functions (instrumental and reactive). The differential and unique patterns of criterion-related validity strongly supported the distinctions among the constructs. The importance of disentangling these dimensions in understanding the development of aggressive behaviour is discussed.

Based on theoretically driven models, the Chicago School Readiness Project (CSRP) targeted low-income children’s school readiness through the mediating mechanism of self-regulation. The CSRP is a multicomponent, cluster-randomized efficacy trial implemented in 35 Head Start–funded classrooms (N = 602 children). The analyses confirm that the CSRP improved low-income children’s self-regulation skills (as indexed by attention/impulse control and executive function) from fall to spring of the Head Start year. Analyses also suggest significant benefits of CSRP for children’s preacademic skills, as measured by vocabulary, letter-naming, and math skills. Partial support was found for improvement in children’s self-regulation as a hypothesized mediator for children’s gains in academic readiness. Implications for programs and policies that support young children’s behavioral health and academic success are discussed.

S chools are an important context for children's social and emotional development. In classrooms and other school settings, children and adolescents need to have skills such as managing negative emotions, being calm and focused, following directions, and navigating relationships with peers and adults. To build and support these skills, schools have widely adopted social and emotional learning (SEL) programs. When well-designed and well-implemented, SEL programs are associated with positive outcomes; however, effect sizes are generally modest even for the most promising interventions. This issue of Social Policy Report proposes that schools should take a new approach: integrating the teaching and reinforcement of SEL skills into their daily interactions and practices with students. It explains that research warrants a new perspective and highlights a range of new approaches and support strategies that are designed to be time-efficient, low-cost, and integrated with (rather than distracting from) academic curricula. These strategies are grounded in an organizing framework for SEL and a review of current programmatic approaches to SEL. They are introduced with a set of principles for creating better integration of SEL into educational practice and accompanied by recommendations about the role of policy.

In recent years, researchers and policy makers have focused attention on the emotional climate of the preschool classroom as an important predictor of young children's socioemotional adjustment and early learning (Goldstein,

In this paper the refinement and psychometric properties of the Infant-Toddler Social and Emotional Assessment (ITSEA) are described. Results from a sociodemographically diverse birth cohort sample of 1,235 parents of children between the ages of 12 and 36 months are presented. Confirmatory factor analyses supported the hypothesized Internalizing, Externalizing, Regulatory, and Competence domains as well as the 17 individual scales that comprise the ITSEA. Findings for 3 additional indices useful in identifying significant psychopathology are presented. Subgroup analyses revealed structural invariance and expected mean level differences across both child sex and 6-month age bands. Child sex differences emerged for some problem and most competence scales, with boys rated as higher on Activity/Impulsivity and girls rated higher on Anxiety and most Competence scales. All competence scores increased across age groups. Problem behaviors showed a more mixed developmental pattern. Test-retest and interrater reliability were acceptable. Associations between the ITSEA and independent evaluator ratings and parental ratings of child behavior problems, temperament, and parental distress support the validity of the instrument.