The comparing activity of brain/behavioral systems and mental health in normal and addict individuals

Based on the reinforcement sensitivity theory normal and non-normal personality are located along a continuum. This study amid to the compare activity of brain/behavioral systems and mental health in addicts and normal individuals based on Jeffrey Gray theory. This research was a kind of cross-sectional research that was performed in 2009. Fifty addicts (opium 26, heroin 18 and cocaine 6) and 50 normal subjects chosen by at hand sampling method and based on age, sex, and educational level matched. In this research of Gray-Wilson personality questionnaire and depression, anxiety, Stress scales were used. Data were analyzed by t-test in independent groups. The results showed that there is a significant difference between normal and addict’s individuals in both behavioral activation system and behavioral inhibition system (P>0.05), but there isn’t a significant difference in fight/flight system (P>0.05) and also there is a significant difference between depression, anxiety and Stress in normal and addict’s individuals (P>0.05). The results of this study conform to basic hypotheses of reinforcement sensitivity theory Gray and psychological condition of addict’s individuals.