Background and Objectives: Meny studies have shown that addicts and non-addicts are different in personality traits, identity styles, resiliency and spirituality, but the role of each component in predicting addictive behavior and discriminating between addict and non-addict groups is not clear. So, the purpose of the current research was to identify the role of predictive factors according to spirituality, personality trails, identity stylfs and resiliency in discriminating between addict and non-addict groups.Material and Methods: In this causal – comparative study, 60 addict males (aged between 15-25 years old) and 60 non-addict males (15-25) were selected.by available sampling All the participants were evaluated by NEOFFI, ISI-6G, Resiliency scale, and Spirituality questionnaire. Data was analyzed by SPSS-18 software and discrimination analysis method were used to analyze the deta.Results: The results showed that 10 predictive variables accounted for 63.5 % of the variance between addict and non-addict groups. In stepwise discriminatory model, most 3 important components in discriminating between groups were: normative identity style, spirituality, and conscientiousness personality trait respectively.Conclusion: The results indicated that personality traits, identity styles, resiliency, and spirituality can discriminate between addict and non-addict groups. Higher scores in conscientiousness, spirituality, and normative identity increase the possibility in predicting membership in non-addict groups.