One of the most challenging developmental periods in a person's life is adolescence. During this period, various biological and psychological changes occur in the individual. Not only that, the individual experiences assorted emotions that are perhaps completely new to him. The brain is developing rapidly in affective and social cognitive functions (Blakemore & Choudhury, 2006; Giedd, 2004; Giedd et al, 1999; Paus, Keshevan, Giedd, 2008; Sowell et al., 2003). There is increased hormonal upheaval, sexual maturation, and active intellectual, emotional, and social change along with increased peer influence in the background (Forbes & Dahl, 2010; Sisk & Zehr, 2005; Wigfield, Byrnes & Eccles, 2006 ). These new experiences and changes can be the result of biological, psychological and socio-environmental changes. These changes may appear collectively, but each is isolated and new to the individual. This means they don't know how to cope with these changes, which makes them vulnerable to engaging in risky behaviors. Risk can be defined as “the estimated probability of a negative outcome for behavior” (Zuckerman, 1994, p. 124). Risk-taking behaviors are “volitional, intentional, goal-oriented, and involve potential harm” (Lightfoot, 1997, p. 22). The likelihood and incidence of harmful and risky behaviors (such as illicit drug use) increases during mid- to late adolescence, more than at any other age (Steinberg, 2008), indicating that intellectual, emotional, and social development continues through late adolescence. During this period, adolescents may become involved in conflict behaviors such as arguing with adults, testing the limits of parents and peers, which can lead to both emotional and physical problems. normative for a college student, despite the fact that such behavior is equally risky for both individuals. In other words, involvement in risky behaviors means different things for younger and older adolescents (Parsons, Siegel, & Cousins, 1997). From a developmental perspective, risk taking is viewed as normative and adaptive for healthy psychological development ( Baumrind, 1991 ) and conceptualized as a means of addressing developmental tasks such as autonomy and exploration. 1.1.3 Cognitive approach According to the cognitive process (decision making), risky behavior can be defined as an action that requires some possibility of loss (Beyth-Marom, Austin, Fischoff, Palmgren & Jacobs-Quadrel, 1993). From a decision theory perspective, choosing a risky or non-risky action is rational if the choice reflects the decision maker's relevant values ​​and beliefs.