Payame Noor University Neuropsychology 2476-5023 6 21 2020 08 22 Comparison of the Effectiveness of Mindfulness-Based Group Cognitive Therapy and Transcranial Direct-Current Stimulation on depression reduction in a nonclinical population Comparison of the Effectiveness of Mindfulness-Based Group Cognitive Therapy and Transcranial Direct-Current Stimulation on depression reduction in a nonclinical population 81 98 7092 10.30473/clpsy.2020.48603.1464 FA Akbar Mahdiloo PhD Student of Psychology, Tabriz Branch, Islamic Azad University, Tabriz, Iran. Naeimeh Moheb Assistant Professor of Psychology, Tabriz Branch, Islamic Azad University, Tabriz, Iran. Seyed Mahmoud Tabatabaei Associate Professor of Cognitive Neuroscience, Tabriz Branch, Islamic Azad University, Tabriz, Iran Marziyeh Alivandi Vafa Assistant Professor of Psychology, Tabriz Branch, Islamic Azad University, Tabriz, Iran. Journal Article 2019 09 14 <strong>Aim</strong>: Depression is the most common mental disorder in the world. Mindfulness-based group cognitive therapy is one of the effective treatments, and transcranial direct-current stimulation is one of the new treatments for depression. This study aimed to compare the efficacy of these two therapies in reducing depression. <strong>Methods:</strong> This was a quasi-experimental study with pre-test and post-test with control group. Subjects were 60 students with depressive symptoms who were screened with General Health Questionnaire and selected by purposeful method based on Beck Depression Inventory(score above 15), and divided randomly into 4 groups of fifteen, including mindfulness-based cognitive therapy, transcranial direct-current stimulation, sham group(mock stimulation), and control group, and were reassessed in post-test using Beck Depression Inventory. The data were analyzed by repeated measurements design using SPSS software version 22. <strong>Results:</strong> The results showed that both experimental groups had a significant decrease in post-test depression scores(p<0/05), while there was no significant difference in sham and control groups. There was no significant difference between the two experimental groups in mindfulness-based group cognitive therapy and transcranial direct-current stimulation(p>0/05). <strong>Conclusion:</strong> Mindfulness-based group cognitive therapy and transcranial direct-current stimulation are effective in reducing depression in the nonclinical population. <strong>Aim</strong>: Depression is the most common mental disorder in the world. Mindfulness-based group cognitive therapy is one of the effective treatments, and transcranial direct-current stimulation is one of the new treatments for depression. This study aimed to compare the efficacy of these two therapies in reducing depression. <strong>Methods:</strong> This was a quasi-experimental study with pre-test and post-test with control group. Subjects were 60 students with depressive symptoms who were screened with General Health Questionnaire and selected by purposeful method based on Beck Depression Inventory(score above 15), and divided randomly into 4 groups of fifteen, including mindfulness-based cognitive therapy, transcranial direct-current stimulation, sham group(mock stimulation), and control group, and were reassessed in post-test using Beck Depression Inventory. The data were analyzed by repeated measurements design using SPSS software version 22. <strong>Results:</strong> The results showed that both experimental groups had a significant decrease in post-test depression scores(p<0/05), while there was no significant difference in sham and control groups. There was no significant difference between the two experimental groups in mindfulness-based group cognitive therapy and transcranial direct-current stimulation(p>0/05). <strong>Conclusion:</strong> Mindfulness-based group cognitive therapy and transcranial direct-current stimulation are effective in reducing depression in the nonclinical population. https://clpsy.journals.pnu.ac.ir/article_7092_887952b5d14d6fecdf6810a8dc7dbd94.pdf