Researchers have utilized the Bystander Intervention Model to conceptualize bullying bystander behavior. The five-step model includes Notice the Event, Interpret the Event as an Emergency, Accept Responsibility, Know How to Act, and Decision to Intervene. The purpose of this study was to examine outcomes of an evidence-based bystander training…

Nature conservation and environmental protection are not only visible in the media, but also play a role in the everyday life of young people, as evidenced by 'Fridays for Future', a demonstration for climate justice. To facilitate the embedding of conservation in school contexts, this study addresses the ideas and approaches which students have…

Background: Adaptability regulates individuals' cognitive, behavioural and emotional responses to new, unexpected and uncertain situations, but to date no study has analysed whether adaptability contemporarily favours cognitive, behavioural and emotional aspects of learning. Aims: This study aims to address this gap by examining (i) the direct…

This research explored whether experiences with warmth in middle childhood are linked to increased levels of positive affect, decreased levels of negative affect, and decreased levels of disagreeable interactions in text-message communication in adolescence. Participants included 218 children (and their parents and peers) who were on average…

According to family systems and life course theories, periods of intense change, such as early adolescence, can disrupt stable family systems, leading to changes in family relationships. In this longitudinal study, we investigate 2 types of change in parental hostility and warmth toward their children during early adolescence (Grades 6 to…

Cyber wellness includes the knowledge, skills, and values geared toward the protection of Internet users as well as proper and responsible technology use. Using the survey method, this study investigated the cyber wellness awareness of secondary school students and teachers as well as parents' perceptions of their children's cyber wellness. Six…

Expectations about alcohol's effects and perceptions of peers' behaviors and beliefs related to alcohol use are each shown to strongly influence the timing of drinking onset during adolescence. The present study builds on prior work by examining the conjoint effects of within-person changes in these social-cognitive factors on age of adolescent…

While multiple valid measures exist for assessing outcomes of environmental education (EE) programs, the field lacks a comprehensive and logistically feasible common instrument that can apply across diverse programs. We describe a participatory effort for identifying and developing crosscutting outcomes for Environmental Education in the…

The aim of the present study is to enable future studies into students' attitudes toward science, and related constructs, by developing and validating an instrument suitable for cross-sectional designs. Following a thorough review of the literature it was determined that many extant instruments included design aspects that appeared to be limited…

This study examined the relationships between youth and parental sensation-seeking, peer influence, parental monitoring and youth risk involvement in adolescence using structural equation modeling. Beginning in Grade 6, longitudinal data were collected from 543 students over 3 years. Youth sensation-seeking in Grade 6 contributed to risk…

Values are conceptualized as the standards individuals use to determine the status of events and actions and are considered to influence individuals' behaviours, reasoning, and perceptions. Based on a synthesis of six school-based student values enhancement programs, this paper reports on the development of the Children's Values Questionnaire…

Individuals with High-Functioning Autism Spectrum Disorder (HFA) demonstrate atypical development resulting in significant deficits in the areas of perspective-taking and observational learning. These deficits lead to challenges in social interactions and academic performance. In particular, children with HFA tend to struggle with comprehending…

The joint development of trajectories of bullying perpetration and peer victimization from Grade 5 to Grade 8 and concurrent and predictive associations with parent- and child-reported symptoms of psychopathology (anxiety, depression, attention-deficit/hyperactivity disorder, and somatization) were examined in a large sample (N = 695) of Canadian…

We tested 2 hypotheses derived from Moffitt's (1993) taxonomic theory of antisocial behavior, both of which are central to her explanation for the rise in delinquency during adolescence. We tested whether persistently delinquent individuals become more accepted by their peers during adolescence and whether individuals who abstain from delinquent…

Prospective longitudinal data from over 14,000 youth residing in 28 communities in the rural United States were analyzed to examine the emergence of mixed-sex friendship groups in early adolescence. Youth were surveyed on 5 occasions between fall of 6th grade and spring of 9th grade. At each assessment, youth reported the names of up to 7…