The Psychological Profile Comparison of Substance-Dependent, Prisoned, and Normal Individuals Using the Minnesota Multiphasic Personality Inventory

Pishevar Mofard, Mohammad Hasan; Mazaheri, Mehrdad; Gheysari, Fateme; Mansourkhanii@gmail.comi, Zahra

Volume 19, Issue 76 (9-2025) etiadpajohi 2025, 19(76): 79-102 | Back to browse issues page

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Pishevar Mofard M H, Mazaheri M, Gheysari F, Mansourkhanii@gmail.comi Z. The Psychological Profile Comparison of Substance-Dependent, Prisoned, and Normal Individuals Using the Minnesota Multiphasic Personality Inventory. etiadpajohi 2025; 19 (76) :79-102
URL: http://etiadpajohi.ir/article-1-3091-en.html

The Psychological Profile Comparison of Substance-Dependent, Prisoned, and Normal Individuals Using the Minnesota Multiphasic Personality Inventory

Mohammad Hasan Pishevar Mofard

, Mehrdad Mazaheri ^*

, Fateme Gheysari

, Zahra Mansourkhanii@gmail.comi

Associate Professor, Department of Psychology, University of Sistan and Baluchestan, Zahedan, Iran

Abstract: (15 Views)

Objective: The present study aimed to compare the psychological profiles of substance-dependent, incarcerated, and normal individuals in Zahedan city, using the Minnesota multiphasic personality inventory (MMPI). Method: This was a descriptive, causal-comparative study. The statistical population included substance-dependent individuals, incarcerated individuals, and normal individuals. The study sample consisted of 994 people, of which 241 were substance-dependent individuals, 193 were incarcerated individuals, and 560 were normal individuals, all selected by convenience sampling. The data was collected through the 71-item MMPI. Data were analyzed using descriptive statistics (mean and standard deviation) and inferential statistics (multivariate analysis of variance) using SPSS-16 software. Results: Significant differences were observed between the substance-dependent, incarcerated, and normal groups across all clinical dimensions of the MMPI. Specifically, the substance-dependent and incarcerated groups scored higher on all clinical scales compared to the normal group. The sub-scales for hysteria, schizophrenia, antisocial personality, and depression showed the highest scores in the substance-dependent and incarcerated groups' psychological profiles compared to the normal group. There was no significant difference between the substance-dependent and incarcerated groups, except for the mean scores on the depression dimension, which were higher in the incarcerated group. Conclusion: It can be generally stated that incarcerated individuals and those with substance dependence show more personality dysfunctions compared to normal individuals, which suggests that personality factors may play a role in substance use and crime. The results can help researchers and those interested in studying the personality traits and potential psychological issues of substance-dependent individuals and incarcerated people using the MMPI.

Keywords: Psychological profile, Personality traits, Minnesota multiphasic personality inventory, Substance dependence, Prisoner

Full-Text [PDF 684 kb] (16 Downloads)

Type of Study: Research | Subject: Special
Received: 2024/04/15 | Accepted: 2025/10/7 | Published: 2025/10/30