Most interventions designed to prevent HIV/STI/pregnancy risk behaviours in young people have multiple components based on psychosocial theories (e.g. social cognitive theory) dictating sets of mediating variables to influence to achieve desired changes in behaviours. Mediation analysis is a method for investigating the extent to which a variable…

Understanding the progression of violent and nonviolent criminal activity remains a matter of theoretical debate. In the present study, the authors build on criminological theory and assess the extent to which the progression of violent and nonviolent criminal behaviors follows different trajectories. The authors rely on semiparametric mixture…

This study identifies factors that influences reduced-fat milk consumption among 560 male students, ages 13-18 years, attending North Los Angeles County public high schools. Participants completed a group-administered Theory of Planned Behavior-based questionnaire. The majority of the participants, 94.8%, reported that they currently drank some…