Objectives: Alexithymia, as a personality trait, causes malfunctioning in individuals in three areas of recognizing emotions, describing emotions, and defective objective thinking. The present study aims to investigate the role of these three abnormal personality dimensions introduced in the 5th volume of the Diagnostic and Statistical Guide for Mental Disorders in the prediction of aspects of alexithymia. Based on previous works, we have hypothesized that there is a correlation between abnormal personality dimension and alexithymia dimensions.
Methods: In order to test the proposed hypothesis, a sample of high-school students of Ramsar County (N=250) were evaluated using the Personality Inventory for DSM-5 (PID-5) and Toronto Alexithymia Scale. Data were analyzed using SPSS18 and by the method of enter regressions.
Results: The results indicated that there was a significant relationship between the inability to identify emotion and negative affect (r=0.28), disinhibition (r=0.20) and psychoticism (r=0.16). It was also revealed that there was a significant positive relationship between the description of emotion and negative affect (r=0.19), detachment (r=0.14), disinhibition (r=0.16) and psychoticism (r=0.27) and between objective thinking and all abnormal personality dimensions (P<0.01). Moreover, these personality dimensions can serve as a useful factor for predicting alexithymia.
Conclusion: According to the obtained correlations between alexithymia and abnormal personality dimension, it is necessary that the comorbidity of these two variables be considered in the treatment of personality and emotional disorder.