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The recently released National Institutes of Health Toolbox (NIHTB) batteries for neurological and behavioral function were designed to serve as standardized, common measures in clinical and epidemiological research. The current study aimed to examine constructs assessed by the self-report and parental proxy-report scales in the NIHTB Emotion Battery (NIHTB-EB) for Children by using factor analyses on data from the U.S. national normative sample of 2,916 English-speaking children. This battery contains 31 scales designed to assess both positive and negative aspects of social and emotional functioning that are considered developmentally relevant at each of three age ranges (3-7, 8-12, and 13-17 years). Results revealed four similar self-report factors for ages 8 to 12 years and 13 to 17 years. Proxy reports for ages 3 to 7 years revealed three factors, and for ages 8 to 12 years two factors. Based on the standardization sample data, age- and gender-corrected norms are presented for all NIHTB-EB individual scales and factor-based composites. [ABSTRACT FROM AUTHOR]

A wealth of literature has examined the association between breastfeeding and the development of cognitive abilities in childhood. In particular, at least some evidence exists suggesting that breastfed children perform better on measures of intelligence later in life. Although a correlation appears to be present, fewer observational studies have included appropriate adjustment for potentially confounding variables; maternal intelligence, maternal education, and cognitive stimulation provided by mothers being chief among them. As a result, we analyze a national sample of approximately 790 American respondents to test the association between breastfeeding and intelligence during childhood and adolescence using multiple intelligence tests and controlling for a range of key covariates. Our results suggest that the correlation between breastfeeding throughout the first six months of life and intelligence is statistically significant and consistent, yet of substantively minor impact. [ABSTRACT FROM AUTHOR]

- This article provides an overview of existing research on the prevalence and predictors of adolescent self-care and on the consequences associated with it. Self-care, in which the young are left unsupervised during out-of-school hours, is a common experience for millions of American youth, and existing studies suggest that this arrangement may represent a risk for the development of behavior problems. However, the behavior problems associated with self-care depend on both individual and environmental factors and are most likely to develop when self-care (a) occurs out of the home, (b) involves permissive parenting and/or low parental monitoring, (c) takes place in neighborhoods with high levels of crime and disorganization, (d) involves adolescents with preexisting behavioral problems, and (e) represents an intensive and persistent arrangement. Following a survey of current research on self-care, recommendations are offered regarding future research and policy. [ABSTRACT FROM AUTHOR]