The Prediction of Distress Tolerance based on Brain-Behavioral Systems, HEXACO Personality Characteristics and Social Isolation in Substance-Dependent Individuals

Objective: The aim of this study was to predict distress tolerance based on brain-behavioral systems, HEXACO personality characteristics and social isolation in substance-dependent individuals. Method: The present study was descriptive-correlational. The statistical population of this study included all substance-dependent men referred to addiction treatment centers in Tehran in 2020. According to Kline (2015), 400 individuals were selected by convenience sampling method and they responded to the distress tolerance scale, the brain /behavioral systems scale, the HEXACO personality inventory, and the social isolation scale. After considering outlier data, 63 questionnaires were discarded and finally 337 people entered the study. Data were analyzed using Pearson correlation coefficient and multiple regression. Results: The results showed that behavioral inhibition system, emotionality, and social isolation had negative and significant relationships with distress tolerance. Behavioral activation system, honesty-humility, extraversion, agreeableness, and conscientiousness had positive and significant relationships with distress tolerance. The results of multiple regression analysis also revealed that 33% of the variance of distress tolerance was explained by brain-behavioral systems, HEXACO personality characteristics, and social isolation. Conclusion: The findings of this study show that brain-behavioral systems, HEXACO personality characteristics, and social isolation play important roles in predicting distress tolerance in substance-dependent individuals.