The aim of this study is to determine whether the level of aggression of the students of Physical Education and Sports School at Istanbul Ayvansaray University differs according to some demographic variables. For this purpose, 180 students from the Physical Education and Sport School participated voluntarily who got trainings from Istanbul…

Background: This study examined predictors of service complexity in children with comorbid intellectual developmental disorder (IDD) and mental health concerns. We examined whether patient type, safety risk, exposure to trauma, and family dysfunction were related to service complexity. Method: The study had a cross-sectional design, wherein…

The goal of this study was to examine behavioral norm effects in 2 peer contexts (classroom, school) on adolescent substance use (tobacco, alcohol, cannabis) and aggressive behaviors (bullying, physical fighting). Participants were 5,642 adolescents (M[subscript age] = 14.29 years, SD = 1.26; 49% boys). There were 3 hypotheses. First, behavioral…

Over the last decade, research on Internet addiction (IA) has increased. However, almost all studies in the area are cross-sectional and do not examine the context in which Internet use takes place. Therefore, a longitudinal study examined the role of conscientiousness (as a personality trait) and classroom hostility (as a contextual factor) in…

Mass media have numerous effects on children, ranging from influencing school performance to increased or reduced aggression. What we do not know, however, is how media availability in the bedroom moderates these effects. Although several researchers have suggested that bedroom media may influence outcomes by displacing other activities (the…