Brain- Behavior Systems, Psychological Hardiness and Ambiguity Tolerance in Substance Abusers and Normal People

The aim of the present study was to compare the brain- behavior systems، psychological hardiness and ambiguity tolerance in substance abusers and normal people. The study was a causal comparative research. Statistical population included all drug users in 2011 (1391s. c.) in the city of Urmia. 50 people were selected through cluster sampling from five drug rehabilitation centers in Urmia and 50 normal participants were matched with them. Data were collected with the Gray-Wilson Personality Questionnaire (GWPQ، 1989)، Kubasa Personal Perspectives Survey Questionnaire (1970)، and the Scale of Ambiguity Tolerance (Lin، 1993). Data were analyzed through multivariate analysis of variance (MANOVA). Analysis of data showed that there were significant differences in brain behavioral systems، hardiness and ambiguity tolerance between substance abusers and normal group (P<0. 001). Substance abusers، scores in the behavioral inhibition system subscale، hardiness and ambiguity tolerance، were lower than the normal group but their scores in behavioral approach system were higher than the normal group. Results indicated that some personality traits such as brain-behavior systems، hardiness and ambiguity tolerance may have an important role in tendency to substance abuse.