Numerous studies consider competition and jealousy within an evolutionary framework, yet less is known about the relation between aggression vis-à-vis hypercompetitiveness (i.e., competing to win) and jealousy. We investigated the longitudinal relations between hypercompetitiveness, jealousy, and aggression and the moderating role of gender in a…

Indirect aggression has been associated with antisocial personality traits like Machiavellianism, but there is a lack of evidence on their longitudinal development across adolescence. Therefore, the joint developmental trajectories of adolescent indirect aggression and Machiavellianism across 3 years of high school (Grades 10 to 12) were…

The current study contrasted two different hypotheses about the relationship between sibling personality and sibling relationship quality: absolute value and dyadic similarity. The absolute value hypothesis suggests that the level of one sibling's personality will predict sibling relationship quality. The dyadic similarity hypothesis argues that…

Swearing uses language forms that are taboo and potentially offensive. These are often used for emotional expression. Multilingual research shows that because the first language retains most emotional force (Dewaele [2004]. "The Emotional Force of Swearwords and Taboo Words in the Speech of Multilinguals." "Journal of Multilingual…

The HEXACO dimensions of personality traits (honesty--humility, emotionality, extraversion, agreeableness, conscientiousness, and openness to experience) have been linked to many adaptive outcomes in physical education-related (PE) settings; yet, little is known about the relationship between personality traits and motivation in students of school…

Emotional reactions to peer victimization may increase risk for subsequent peer victimization. In the present study, we investigated whether shame mediated the development of chronic peer victimization, i.e., young people's experiences of being bullied persistently across time. We used a multiple mediation model to test the indirect effects of…

The primary goal of the study was to examine the relationships between emotional intelligence and personality type in later childhood. Eighty-one youth in grades seven and nine (M[subscript age]=12.49 years, SD[subscript age]=1.20 years) were asked to complete the "Bar-On Emotional Quotient Inventory: Youth Version" and the…

Incivility involves rude, discourteous, and disrespectful attitudes and behaviours. The present study examined how various temperament traits were related to beliefs of classroom incivility among adolescents. The sample comprised of 222 adolescents (120 boys) between the ages of 12 and 17 (M[superscript age] = 14.07, SD = 1.54) who were recruited…

Media play an important role in young people's lives as an agent of socialization, both generally and with regard to mathematics. To understand the mathematics-related messages disseminated to young people via popular media, we analyzed portrayals of mathematics and mathematicians in over 40 media examples (television shows, movies, websites,…

In this study, age-related differences in adults' moral identity were investigated. Moral identity was conceptualized a context-dependent self-structure that becomes differentiated and (re)integrated in the course of development and that involves a broad range of value-orientations. Based on a cross-sectional sample of 252 participants aged 14 to…

A recently validated trait personality framework is the HEXACO (honesty-humility, emotionality, extraversion, agreeableness, conscientiousness, and openness to experience). Little is yet known about how the HEXACO personality dimensions and its subsets--particularly the dimension of honesty-humility--relates to physical activity and body size…

This study explored whether the relationships between specific features of child care quality and externalizing and internalizing behaviors in 24-month-old children are moderated by gender and temperament. Questionnaires were used to record children's gender and measure their temperament. Child care quality was observed with the "Échelles…

According to Blatt (2004; Blatt & Luyten, 2009) and others (e.g., Beck, Epstein, Harrison, & Emery, 1983), establishing positive self-definition and mature relatedness to others represent core lifespan developmental tasks. In a sample of emerging adults, this study examined the effects of the quality of one close friendship and changes in…

Empirical studies of personality traits in creative writers have demonstrated mixed findings, perhaps due to issues of sampling, measurement, and the reporting of statistical information. The goal of this study is to quantify the personality structure of aspiring creative writers according to a modern hierarchal model of trait personality. A…

This study employs the 2004 School Achievement Indicators Program (SAIP) data to examine whether academic effort manifested by greater investments in school and homework does result in higher literacy scores in science for Canadian students. The study compares four gender-immigrant profiles: Canadian-born males, immigrant males, Canadian-born…