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Gentile, Douglas A.; Berch, Olivia N.; Choo, Hyekyung; Khoo, Angeline; Walsh, David A. – Developmental Psychology, 2017
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…
Descriptors: Mass Media Effects, Family Environment, Hypothesis Testing, Age Differences
Van Ryzin, Mark J.; Dishion, Thomas J. – Journal of Child Psychology and Psychiatry, 2014
Background: Early substance use co-occurs with youths' self-organization into deviant peer groups in which substance use is central to social interaction. We hypothesized that the social dynamics of deviant peer groups amplify the risk of progressing from early use to later dependence, and that this influence occurs over and above escalations…
Descriptors: Substance Abuse, Smoking, Drinking, Marijuana
Jang, Keum Seong; Hwang, Seon Young; Choi, Ja Yun – Journal of School Health, 2008
Background: The aims of this study were to identify the independent factors associated with intermittent addiction and addiction to the Internet and to examine the psychiatric symptoms in Korean adolescents when the demographic and Internet-related factors were controlled. Methods: Male and female students (N = 912) in the 7th-12th grades were…
Descriptors: Junior High School Students, High School Students, Substance Abuse, Intervention