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A nationwide survey was conducted to investigate the prevalence of video game addiction and problematic video game use and their association with physical and mental health. An initial sample comprising 2,500 individuals was randomly selected from the Norwegian National Registry. A total of 816 (34.0 percent) individuals completed and returned the(More)
There is evidence that young people are at high risk of developing gambling disorders. The prevalence and correlates of gambling among youth therefore merit closer study. During spring 2004, a sample of 1,351 boys and girls (aged 16-19 years) from 151 high-school classes (clusters) participated in an internet survey about gambling. The response rate was(More)
AIMS To investigate the short- and long-term effect of psychological treatments of pathological gambling and factors relating to treatment outcome. DESIGN AND SETTING This study provides a quantitative meta-analytical review of psychotherapeutic treatments of pathological gambling. Studies were identified by computer search in the PsycINFO and Medline(More)
PURPOSE To estimate the global lifetime prevalence rate of anabolic-androgenic steroid (AAS) use and investigate moderators of the prevalence rate. METHODS A meta-analysis and meta-regression analysis was performed using studies gathered from searches in PsycINFO, PubMed, ISI Web of Science, and Google Scholar among others. Included were 187 studies that(More)
UNLABELLED Although several qualitative reviews on pharmacological interventions for pathological gambling have been published, no quantitative review of this field has been conducted. METHODS Studies of pharmacological interventions of pathological gambling were identified by computer searches in the PsychINFO and MEDLINE databases covering the period(More)
This postal questionnaire study investigated the use of media in the bedroom and its relationships with sleep habits and symptoms of insomnia. The sample comprised 2500 individuals aged 16-40 years drawn randomly from the Norwegian national register. A total of 816 (34.0%) completed and returned the questionnaire. Respondents were asked how often they used(More)
We report data collected in a representative sample of 17-year-old Norwegians to investigate prevalence rates of non-problem, risk, and problem gambling, as measured by the Problem Gambling Severity Index (PGSI). In addition, we explored the importance of demographic, personality, motivational, social, and health variables explaining variance in adolescent(More)
PURPOSE To investigate prevalence and correlates of delayed sleep phase, characterized by problems falling asleep in the evening and rising at adequate times in the morning, in a large sample of Norwegian high school students. METHODS A randomized sample of 1285 high school students (aged 16-19 years) participated in an internet based study answering(More)
The aim of this study was to examine the relationship between the structural characteristics and gambling behavior among video lottery terminal (VLT) gamblers. The study was ecological valid, because the data consisted of actual gambling behavior registered in the participants natural gambling environment without intrusion by researchers. Online behavioral(More)
Attentional bias has been the subject of extensive empirical investigation in connection with chemical addictions, and it has been demonstrated in users of several different substances. The findings show that substance users seem to notice and attend to substance-related stimuli more readily than non-substance-related stimuli. Less is known, however, about(More)