“…For example, Siegel and his colleagues found that engagement in behaviours including alcohol use, illegal drug use, sexual activity, stereotypical male behaviours, imprudent behaviours, and socially unacceptable behaviours by college students as well as adolescents diagnosed with conduct disorder, was better predicted by their perceived benefits of engaging in these behaviours than the perceived costs (Lavery, Siegel, Cousins, & Rubovitts, 1993;Parsons, Halkitis, Bimbi, & Borkowski, 2000;Parsons, Siegel, & Cousins, 1997;Shapiro, Siegel, Scovill, & Hays, 1998;Siegel, Cousins, Rubovitts, Parsons, Lavery, & Crowley, 1994). Bauman and his colleagues measured youths' perceptions of the desirability and probability of the consequences of risky behaviours (e.g., alcohol, tobacco and drug use, and risky sexual behaviour) and found inconsistent evidence for the idea that youths maximize subjective expected utility in past or forecasted risk taking (Bauman & Bryan, 1983;Bauman, Fisher, & Bryan, 2006;Bauman, Fisher, Bryan, & Chenoweth, 1984;1985;Bauman, Fisher, & Koch, 1989;Bauman & Udry, 1981;Gilbert, Bauman, & Udry, 1986).…”