Adolescence and young adulthood are characterized by substantial sociodemographic, family, social, and personality changes that may influence loneliness. Although loneliness is a public health challenge, we know little about how loneliness develops during these periods. Our study addresses this lacuna by using 4-wave longitudinal data from 3,116…

Research Findings: Self-regulation in young children predicts later social adjustment and academic success across cultural contexts. Therefore, it is crucial to identify factors that promote or inhibit behavioral self-regulation skills. In this study, we focus on gender and socioeconomic status (SES; parental education and income) as possible…

This study investigated the normative use and developmental course of physical aggression (PA), defined as use of physical force such as hitting, biting, and kicking, from 8 to 26 months and predictors thereof. We used data from the Behavior Outlook Norwegian Developmental Study, comprising 1,159 children (559 girls and 600 boys). Both mothers and…

The objectives of this article were to investigate to which extent and in what ways persons influence students' choice of science, technology, engineering, and mathematics (STEM) in tertiary education, and to assess the suitability of an analytical framework for describing this influence. In total, 5,007 Norwegian STEM students completed a…

This paper uses Norwegian data to estimate the effect of family size on IQ scores of men. Instrumental variables (IV) estimates using sex composition as an instrument show no significant negative effect of family size; however, IV estimates using twins imply that family size has a negative effect on IQ scores. Our results suggest that the effect…

It is well established that girls outperform boys in schools, but the available empirical evidence suggests that the determinants of the gender achievement gap are poorly understood. The present paper looks inside families for explanations. Rich data for families with children in the lower secondary school in Norway are used to investigate whether…

The main aim of this article is to explore the association between mental health problems in children placed out-of-home and family risk factors reported as reasons for placement. The sample consisted of 109 Norwegian children aged 6-12 years. Mental health problems were assessed by the Revised Rutter scales reported by the parents and the…

This article examines sex segregation in higher education in Norway. The extent to which parent's education and occupation and students' grades have an impact on the choice of male and female dominated subjects is analysed. The analysis uses a framework which integrates socialisation and rational choice perspectives. The data used are from a…

This article reports results of an exploratory study examining factors that might be associated with achievement in mathematics and participation in advanced mathematics courses in Canada, Norway, and the United States of America (USA). These factors, which were not directly related to schooling accounted for large degrees of variability, 24% to…

Purpose: This paper aims to examine how influences at home and school interact to predict smoking among adolescents. Design/methodology/approach: Data were collected from 15-year-old pupils from Norway (n=1,404 in 73 Grade 10 school classes). Multilevel logistic regression analysis was used to determine how family and school influences interact to…

The great majority of children receiving intervention from child welfare and protection services (CWS) in Norway live at home. The purpose of this study was to assess mental health problems among these children. Data stem from a population-based study, the Bergen child study, conducted in 2006. Of a sample consisting of 4,162 children in the fifth…