This study investigated the links between theory of mind, social motivation, and children's social competence in middle childhood and early adolescence. Two hundred and sixty four children (136 girls, 128 boys) aged between 8 and 13 years (M Age = 10.88 years, SD = 1.45) completed theory-of-mind tests and self-report questionnaires measuring…

Loneliness describes a perceived deficiency in quantitative or qualitative aspects of individuals' social relationships. Whereas the health-related consequences of loneliness are well-documented, surprisingly little is known about its interpersonal features and its consequences for relationship outcomes. In the present study, we investigated the…

The goal of this study was to advance the conceptualization and measurement of adolescent popularity by exploring the commonly used composite score (popularity minus unpopularity). We used standardized peer nominations from 4,414 early adolescents (ages [approximately equal to] 12-14 years) from three samples collected in two countries. Popularity…

It is often hypothesized that prior knowledge strongly predicts learning performance. It can affect learning positively mediated through some processes and negatively mediated through others. We examined the relation between prior knowledge and learning in a meta-analysis of 8776 effect sizes. The stability of individual differences, that is, the…

Students exhibiting mature number sense make sense of numbers and operations, use reasoning to notice patterns, and flexibly select the most effective and efficient problem-solving strategies (McIntosh et al., 1997; Reys et al., 1999; Yang, 2005). Despite being highlighted in national standards and policy documents (CCSS, 2010; NCTM, 2000, 2014),…

The purpose of the study is to research the assertiveness levels of university students and their attitudes toward physical education course in terms of gender, doing regular sports and academic achievement. The design of the research is descriptive. The sample of the study consists of university students who take physical education and sport…

This article aims at examining the relationship between students' expressed notions of infinity and strategies used to compare the cardinalities of infinite sets. The notions of infinity were classified into two categorizations of potential and actual infinity, and the strategies were classified as part-whole, single infinity, incomparability and…

Ample evidence suggests that exposure to family violence associates with bullying perpetration (BP). However, much is unknown about the underlying mechanism such as depressive symptoms and the moderating role of school bonding in these relationships. Thus, this study first examined the link between exposure to family violence and BP. Second, the…

Smartphones are widely used among high school students nowadays. With their constant use of this technology, they have become more dependent on it. This study assessed the extent of smartphone utilisation and the academic performance of the 195 junior high school students at a public national high school. Respondents were identified using…

The purpose of this article is to show that emotions matter when predicting the financial well-being of U.S. households. The broaden and build theory (BBT) was used to predict that positive emotions would be positively associated with financial well-being and negative emotions would be negatively associated with financial wellbeing. Using a…

Objective: Substance use is a public health concern and cross-sectional studies have found that impulsivity and drinking motives influence substance use in emerging adults. Despite these findings, longitudinal studies with nuanced measures of impulsivity and drinking motives are needed. Participants: The current study investigated the three-year…

Objectives: Posttraumatic stress disorder (PTSD) has been linked to risky sexual behavior (RSB). However, little is known regarding the role of impulsivity in this relation among college students. Participants: The present study examined the moderating role of impulsivity dispositions on the relation between PTSD symptoms and past-year RSB in a…

Loneliness has been associated with several adverse psychosocial outcomes in childhood and adolescence. The present study aimed to investigate feelings of loneliness and social dissatisfaction in school-aged typically-developing (TD) siblings of children with an autism spectrum disorder (ASD). For this purpose, 118 siblings of children with ASD…

Randomised controlled trials of cancer treatments typically report progression free survival (PFS) and overall survival (OS) outcomes. Existing methods to synthesise evidence on PFS and OS either rely on the proportional hazards assumption or make parametric assumptions which may not capture the diverse survival curve shapes across studies and…

Moving school is a major event for students, with potential impacts on both student and school performance. Students can experience a diversity of move types, including variation in timing, origin and destination, though this complexity is not always acknowledged in studies or educational policies, which tend towards binary distinctions of movers…