Salem Mosavi - Department of Psychology, Khorramshahr Branch, Islamic Azad University, Khorramshahr, Iran
Parvin Ehtesham Zadeh - Department of Psychology, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Zahra Eftekhar Saadi - Department of Psychology, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Alireza Heydarei - Department of Psychology, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

Background: Substance dependence is acknowledged as one of the major social and health issues inflicting severe and profound physical and psychological harm, as well as numerous social damages, such as divorce and unemployment. The present study aimed to make a comparison between the effectiveness of Matrix training and transcranial direct current stimulation (tDCS) treatments on positive and negative affects and craving in substance abusers who referred to Ahwaz addiction treatment centers within 2018-2019. Materials and Methods: The present semi-experimental study was conducted using a pre-test post-test control group design with a two-month follow-up. The study population consisted of all substance abusers who referred to Ahwaz addiction treatment centers within 2018-2019. A total of 60 volunteers were selected by voluntary sampling method and randomly assigned to Matrix training (n=20), tDCS (n=20), and control (n=20) groups. Data were collected by The Positive and Negative Affect Schedule (PANAS) and Desire For Drug Questionnaire and were analyzed in SPSS software (version 22). Results: Based on the obtained results, Matrix, tDCS, and control groups were significantly different in terms of positive and negative affects and craving (P<0.001). Moreover, it was found that Matrix training and tDCS were effective on positive and negative affects and cravings (P<0.001); nonetheless, no significant difference was observed between the matrix and tDCS groups (P>0.05). Conclusion: Generally speaking,  it can be concluded that Matrix training and tDCS methods are equally effective in emotions and craving.

Craving, Transcranial Direct Current Stimulation, Drug users, Affect