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Internet addiction is a growing concern; however, both a clear understanding of the mechanisms driving problematic behaviors and a gold standard instrument for assessing symptoms are lacking. The purpose of this study was to perform a psychometric analysis of the most widely used screening instrument, the Young Internet Addiction Test (IAT), using a sample(More)
BACKGROUND Depression is common and frequently undiagnosed among college students. Social networking sites are popular among college students and can include displayed depression references. The purpose of this study was to evaluate college students' Facebook disclosures that met DSM criteria for a depression symptom or a major depressive episode (MDE). (More)
OBJECTIVE To determine the prevalence of and associations among displayed risk behavior information that suggests sexual behavior, substance use, and violence in a random sample of the self-reported 18-year-old adolescents' publicly accessible MySpace Web profiles. DESIGN Cross-sectional study using content analysis of Web profiles between July 15 and(More)
PURPOSE Exposure to alcohol use in media is associated with adolescent alcohol use. Adolescents frequently display alcohol references on Internet media, such as social networking web sites. The purpose of this study was to conduct a theoretically based content analysis of older adolescents' displayed alcohol references on a social networking web site. (More)
BACKGROUND: Adolescents frequently report barriers to obtaining sexual health education. PURPOSE: The purpose of this study was to determine adolescents' views regarding how new technologies could be used for sexual health education. METHODS: Focus groups were conducted with a purposeful sample of adolescents between 14 and 19 years old. Facilitators(More)
PURPOSE Facebook continues to grow in popularity among adolescents as well as adolescent researchers. Guidance on conducting research using Facebook with appropriate attention to privacy and ethics is scarce. To inform such research efforts, the purpose of this study was to determine older adolescents' responses after learning that they were participants in(More)
OBJECTIVE To determine whether an online intervention reduces references to sex and substance abuse on social networking Web sites among at-risk adolescents. DESIGN Randomized controlled intervention trial. SETTING www.MySpace.com. PARTICIPANTS Self-described 18- to 20-year-olds with public MySpace profiles who met our criteria for being at risk (N =(More)
BACKGROUND Internet peer support groups for depression are becoming popular and could be affected by an increasing number of social network services (SNSs). However, little is known about participant characteristics, social relationships in SNSs, and the reasons for usage. In addition, the effects of SNS participation on people with depression are rather(More)
CONTEXT MySpace is a popular social networking Web site where users create individual Web profiles. Little data are available about what types of health risk behaviors adolescents display on MySpace profiles. There are potential risks and intervention opportunities associated with posting such information on a public Web site. OBJECTIVE To examine(More)
We compute the monoid V (L K (E)) of isomorphism classes of finitely generated projective modules over certain graph algebras L K (E), and we show that this monoid satisfies the refinement property and separative cancellation. We also show that there is a natural isomorphism between the lattice of graded ideals of L K (E) and the lattice of order-ideals of(More)