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The article presents a study which evaluates the efficacy of brief image-based prevention intervention and assesses drug use as intervention effect moderator. The study employs the Health and Personal Development Survey to gather the data of adolescents' health and substance use behavior and analysis of variance to test the intervention effects. The result suggests that brief image-based messages contribute in increasing health behavior goal setting and reducing substance use among adolescents.

Abstract: Objective: This study examined whether 3-month outcomes of a brief image-based multiple behavior intervention on health habits and health-related quality of life of college students were sustained at 12-month follow-up without further intervention. Methods: A randomized control trial was conducted with 303 undergraduates attending a public university in southeastern US. Participants were randomized to receive either a brief intervention or usual care control, with baseline, 3-month, and 12-month data collected during fall of 2007. Results: A significant omnibus MANOVA interaction effect was found for health-related quality of life, p =0.01, with univariate interaction effects showing fewer days of poor spiritual health, social health, and restricted recent activity, p''s<0.05, for those receiving the brief intervention. Significant group by time interaction effects were found for driving after drinking, p =0.04, and moderate exercise, p =0.04, in favor of the brief intervention. Effect sizes typically increased over time and were small except for moderate size effects for social health-related quality of life. Conclusion: This study found that 3-month outcomes from a brief image-based multiple behavior intervention for college students were partially sustained at 12-month follow-up. [Copyright &y& Elsevier]

Purpose. This study examined whether brief intervention strategies founded on the Behavior- Image Model and addressing positive images of college and career success could be potentially efficacious in impacting multiple health habits of high-risk adolescents transitioning into adulthood. Design. Participants were stratified by grade level and druguse and individually randomized to one of the three Plan for Success interventions, with baseline and 1 month postintervention data collections. Setting. A large, relatively diverse suburban school in northeast Florida. Subjects. A total of 375 11th and 12th grade students participated during the spring semester 2006. Intervention. Three interventions studied included: (1) Goal Survey, (2) Goal Survey plus Contract, or (3) Goal Survey plus Consult. Measures. Outcome measures included multiple health risk, health promotion, and personal development behaviors, as well as image and belief measures. Analysis. Repeated-measures MANOVAs and ANOVAs were used to examine intervention effects. Results. MANOVAs were significant for alcohol use, F(4,328) = 6.33, p = .001; marijuana use, F(4,317) = 3.72, p = .01; exercise, F(3,299) = 4.28, p = .01; college preparation, F(2,327) = 6.26, p = .001; and career preparation, F(2,329) = 6.17, p = .001, with most behaviors improving over time, whereas group-by-time interaction effects were found for nutrition habits, F(6,652) = 2.60, p = .02; and career preparation, F(4, 658) = 3.26, p = .01, favoring the consultation. Conclusion. Brief interventions founded on the Behavior-Image Model may have potential to improve selected health and personal development habits among older adolescents. [ABSTRACT FROM AUTHOR]