Adolescence is one of the most difficult developmental periods in a person's life. Various biological and psychological changes occur in the individual during this period. Additionally, the individual experiences varied emotions that may be completely new to them. The brain rapidly develops cognitive, affective and social functions (Blakemore & Choudhury, 2006; Giedd, 2004; Giedd et al, 1999; Paus, Keshevan, Giedd, 2008; Sowell et al., 2003). There is an increase in hormonal shifts, sexual maturation, and active intellectual, emotional, and social changes, as well as increased background peer influence (Forbes & Dahl, 2010; Sisk & Zehr, 2005; Wigfield, Byrnes and Eccles, 2006). These new experiences and changes may 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 manage these changes, making them vulnerable to engaging in risky behavior. Risk can be defined as “the estimated probability of a negative outcome for a behavior” (Zuckerman, 1994, p. 124). Risky behaviors are “voluntary, intentional, goal-directed, and carry the potential for harm” (Lightfoot, 1997, p. 22). The likelihood and incidence of engaging in harmful and risky behaviors (such as illicit drug use) increases during middle and late adolescence, more than at any other age (Steinberg, 2008), which indicates that intellectual, emotional and social development continues until late adolescence. late adolescence. During this period, adolescents may be involved in conflicting behaviors, such as arguing with adults, testing the boundaries of their parents and peers, which can lead to both emotional and physical problems.... . middle of paper ...... normative for a student, even if such behavior is equally risky for both individuals. In other words, engaging in risky behaviors means different things for younger and older adolescents (Parsons, Siegel, & Cousins, 1997). From a developmental perspective, risk-taking is considered normative and adaptive for healthy psychological development (Baumrind, 1991) and conceptualized as a means to confront developmental tasks such as autonomy and exploration.1.1 .3 Cognitive approachAccording to cognitive (decision-making) approaches, risky behavior can be defined as an action requiring a certain chance of loss (Beyth-Marom, Austin, Fischoff, Palmgren & Jacobs-Quadrel, 1993). From a decision theory perspective, the choice of a risky or non-risky action is rational if the choice reflects the relevant values ​​and beliefs of the decision maker..