home › Publications

Find Publications

 
Results: 248 publications.

Meta-analysis of mobile phone-based interventions for smoking cessation trials in different countries

Jiang Y, Huang Y, Ybarra ML, Abroms L, Free C, Whittaker. (2014). Meta-analysis of mobile phone-based interventions for smoking cessation trials in different countries. Poster presented at 35th Annual Conference of the International Society for Clinical Biostatistics, Vienna, Austria Tobacco use contributes to 12% of all deaths among adults ages 30 years and older worldwide. Read More »

A randomized controlled trial to increase HIV preventive information, motivation, and behavioral skills in Ugandan adolescents

  • Cybersenga

Ybarra ML, Korchmaros JD, Prescott TL, Birungi R. A randomized controlled trial to increase HIV preventive information, motivation, and behavioral skills in Ugandan adolescents. Ann Behav Med. 2015;49(3):473-85. doi: 10.1007/s12160-014-9673-0. Abstract: BACKGROUND: One in 25 Ugandan adolescents is HIV positive. PURPOSE: The aim of this study is to examine the impact of an Internet-based HIV prevention program on Information-Motivation-Behavioral skills Read More »

Adolescent online romantic relationship initiation: Differences by sexual and gender identification

  • Teen Health and Technology

Korchmaros JD, Ybarra ML, Mitchell KJ. Adolescent online romantic relationship initiation: Differences by sexual and gender identification. J Adolesc. 2015;40:54-64. doi: 10.1016/j.adolescence.2015.01.004 Abstract: Data from the national Teen Health and Technology Study of adolescents 13–18 years old (N = 5091) were used to examine online formation of romantic relationships. Results show that lesbian, gay, bisexual, transgender, and queer (LGBTQ) and non-LGBTQ Read More »

Can clans protect adolescent players of massively multiplayer online games from violent behaviors?

  • Growing Up With Media

Ybarra ML, boyd d. Can clans protect adolescent players of massively multiplayer online games from violent behavior? Int J Public Health. 2015;60(2):267-76. doi: 10.1007/s00038-014-0637-8. Abstract: OBJECTIVES: To examine whether clan membership mediates observed associations between violent game content and externalizing behaviors among youth who play massively multiplayer online games (MMOGs). METHODS: Responses from 486 11- to 18-year-olds who: Read More »

Serious games for sexual health

Brown, K., Bull, S., Christensen, J.L., Hieftje,K., Jozowski, K.N., Ybarra, M.L. Serious games for sexual health. Games Health J. 2015;4(2):69-77. doi: 10.1089/g4h.2014.0139. Abstract: Program developers and researchers in the sexual health domain have increasingly embraced technological trends as they emerge. With the emergence of serious game applications to impact health behaviors, a natural step for research Read More »

What features make online harassment incidents upsetting to youth?

Mitchell KJ, Ybarra ML, Jones LM, & Espelage D. What features make online harassment incidents upsetting to youth? J Sch Violence. Published online ahead of print January 6, 2015. doi: 10.1080/15388220.2014.990462 Abstract: This article examines characteristics of online harassment episodes associated with increased distress for youth. Data were collected as part of the Third Youth Internet Read More »

Online focus groups as an HIV prevention program for gay, bisexual, and queer adolescent males

Ybarra ML, DuBois LZ, Parsons JT, Prescott TL, Mustanski B. Online focus groups as an HIV prevention program for gay, bisexual, and queer adolescent males. AIDS Educ Prev. 2014;26(6): 554-564. doi: 10.1521/aeap.2014.26.6.554 Abstract: Seventy-five 14–18-year-old gay, bisexual, and queer (GBQ) males provided feedback about how their participation in national, online focus groups (FG) about GBQ sexual health related topics resulted Read More »

Drawing upon successes in other fields to inform opportunities for technology-based mental health promotion

  • Guy2Guy

Ybarra M. Drawing upon successes in other fields to inform opportunities for technology-based mental health promotion. Oral presentation at Johns Hopkins University Department of Psychiatry Research Conference; 16 Dec 2014; Baltimore, MD. Data from the SMS Turkey, SMS USA, Guy2Guy, and BullyDown studies, respectively collected in 2008, 2011, 2012-2013, and ongoing, are discussed.

Understanding linkages between bullying and suicidal ideation in a national sample of LGB and heterosexual youth in the United States

Ybarra ML, Mitchell KJ, Kosciw JG, Korchmaros JD. Understanding linkages between bullying and suicidal ideation in a national sample of LGB and heterosexual youth in the United States. Prev Sci. 2015;16(3):451-62. doi: 10.1007/s11121-014-0510-2 Abstract: While there is an extant research base regarding suicidal ideation in relation to bullying and peer harassment, how findings may be Read More »

Exposure to websites that encourage self-harm and suicide: Prevalence rates and association with actual thoughts of self-harm and thoughts of suicide in the United States

Mitchell KJ, Wells M, Priebe G, Ybarra ML. Exposure to websites that encourage self-harm and suicide:Prevalence rates and association with actual thoughts of self-harm and thoughts of suicide in the United States. J Adolesc. 2014;37(8):1335-1344. doi: 10.1016/j.adolescence.2014.09.011 Abstract: This article provides 12-month prevalence rates of youth exposure to websites which encourage self-harm or suicide and examines Read More »

“Sexting” and its relation to sexual activity and sexual risk behavior in a national survey of adolescents

Ybarra ML, Mitchell KJ. “Sexting” and its relation to sexual activity and sexual risk behavior in a national survey of adolescents. J Adolesc Health. 2014;55(6):757-764. doi: 10.1016/j.jadohealth.2014.07.012 Abstract: PURPOSE: To examine the relation between “sexting” (sending and sharing sexual photos online, via text messaging, and in person) with sexual risk behaviors and psychosocial challenge in adolescence. Read More »

Building Capacity to Reduce Bullying and Its Impact on Youth across the Lifecourse: A Workshop

CiPHR’s President and Research Director Michele Ybarra presents at the Institute of Medicine’s workshop meeting, “Building Capacity to Reduce Bullying and Its Impact on Youth across the Lifecourse.” Using data from multiple CiPHR research studies, CyberSenga, SMS USA, G2G, and SMS Turkey, she presents on what resources are available online for preventing bullying and what we can Read More »