We have analyzed two months of log data and 100 surveys on the phone use of a Swedish online community for teenagers to investigate the mobile use of an established online service. This shows that the phone use mostly takes place during times of the day when teenagers have social time and the use is not influenced by the availability of a computer. The phone makes the community access more priv...

Researchers have found that religious affiliation, religious attendance, religious beliefs, and prayer are associated with teen sexual attitudes and behavior.(Wallace & Williams, 1997; Whitehead, Wilcox, & Rostosky, 2001) Holding strong religious beliefs and praying are linked to reduced sexual activity among adolescents (Meier, 2003; Resnick et al., 1997) and teens (girls in particular) from m...

Dating violence is a serious problem among adolescents and young adults. Understanding teens' reactions to dating violence offers the potential to understand the factors that lead to perpetration of violent behavior and to elucidate prevention strategies. Knowledge concerning youth attitudes about dating violence is limited, and has largely come from self-report questionnaires to date. We utili...

A competing theory of teen reproductive behavior argues that teens give little consideration to the costs of an unwanted pregnancy when deciding to have sex. Under this model, changes in laws that alter the price of accessing reproductive health services have little effect on sexual activity. It is only after an act of unprotected intercourse or contraceptive failure—when faced with an unwanted...

The present study examined potential bi-directional associations between religiosity and first sexual intercourse. The sample, drawn from the National Longitudinal Survey of Youth, included 303 teens (22% Hispanic, 35% Black, 43% White; 53% male) aged 15-16 in 1996 and 17-18 in 1998. All teens included in the sample were virgins at Time 1. In the longitudinal analyses, higher Time 1 religiosity...

In the context of Hispanic teen smoking, this study examined the influence of pro-tobacco advertising and smoking warnings on teens from Hispanic communities. Analyzing data of two strata that had the highest percentage of urban (N = 1206) and non-urban (N = 385) Hispanic teenagers aged 13-17 from the 2012 National Youth Tobacco Survey, we found that pro-tobacco advertising indirectly influence...

Hepatitis B (HBV) is one of the most common infectious diseases, with a worldwide annual incidence over 250 million people. About one-third cases are in China. While China made significant efforts to implement nationwide HBV vaccination program for newborns, number susceptible adults and teens remain. In this paper, we analyze game-theoretical model dynamics that incorporates government-provide...

OBJECTIVES The objective was to describe rates of dating aggression and related high-risk behavior among teens presenting to the emergency department (ED) seeking gynecologic care, compared to those seeking care for other reasons. METHODS Female patients ages 14-18 years presenting to the ED during the afternoon/evening shift of a large urban teaching hospital over a 19-month period were appr...

PURPOSE To explore whether patterns of sexual relationships, such as sequential (nonoverlapping in time) or concurrent (overlapping in time), are more important indicators of sexually transmitted disease (STD) risk among adolescents than number of sexual partners. METHODS Data from 4,707 sexually active adolescents from the National Longitudinal Study of Adolescent Health were analyzed based ...