Comparing Sensory Information Processing and Alexithymia between People ‎with Substance Dependency and Normal

Background: Sensory information processing and alexithymia are two important factors in determining behavioral reactions. Some studies explain the effect of the sensitivity of sensory processing and alexithymia in the tendency to substance abuse. Giving that, the aim of the current study was to compare the styles of sensory information processing and alexithymia between substance-dependent people and normal ones. Methods: The research method was cross-sectional and the statistical population of the current study comprised of all substance-dependent men who are present in substance quitting camps of Masal, Iran, in October ۲۰۱۳ (n = ۷۸). ۳۶ persons were selected randomly by simple randomly sampling method from this population as the study group, and ۳۶ persons were also selected among the normal population in the same way as the comparison group. Both groups was evaluated by using Toronto alexithymia scale (TAS) and adult sensory profile, and the multivariate analysis of variance (MANOVA) test was applied to analyze data. Findings: The results showed that there are significance differences between two groups in low registration (P < ۰.۰۲۰, F = ۵.۶۶), sensation seeking (P < ۰.۰۵۰, F = ۱.۹۲), and sensory avoidance (P < ۰.۰۰۸, F = ۷.۵۲) as a components of sensory processing and difficulty in describing emotions (P < ۰.۰۰۱, F = ۱۵.۰۱) and difficulty in identifying emotions (P < ۰.۰۰۲, F = ۱۰.۵۴) as a components of alexithymia. However, no significant difference were found between two groups in components of sensory sensitivity (P < ۰.۱۷۰, F = ۱.۹۲) and external oriented thinking style (P < ۰.۰۶۰, F = ۳.۶۰). Conclusion: These results showed that substance-dependent people process sensory information in a different way than normal people and show more alexithymia features than them.

Keywords:

Sensory information processing , alexithymia , Substance dependent people