en رويكرد شناختي رفتاري Cognitive behavioral پژوهشي Original Research Article <span style="font-size:12pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><b>Background:</b> Bipolar disorder (BD) is characterized by severe mood fluctuations and maladaptive coping strategies such as cognitive avoidance. This quasi-experimental study aimed to compare the effectiveness of a neurobehavioral model-based psychological rehabilitation package and mental imagery-based therapy on manic symptom severity and cognitive avoidance in patients with BD.</span></span></span><br> <span style="font-size:12pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><b>Methods:</b> The study was conducted during the first half of 2025. Forty-five inpatients with BD at Golestan Hospital (Ahvaz, Iran) were selected through purposive sampling and randomly assigned to three groups (n=15 each): neurobehavioral rehabilitation, mental imagery-based therapy, and control. The experimental groups received eight 90-minute sessions. Data were collected using the Mania Symptom Checklist (MSC) and Cognitive Avoidance Questionnaire (CAQ). Repeated measures ANOVA and Bonferroni post-hoc tests were used for data analysis.</span></span></span><br> <span style="font-size:12pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><b>Results:</b> Both interventions were associated with significant reductions in manic symptom severity compared to the control group (P<0.001), with no significant difference between the two experimental groups. Regarding cognitive avoidance, significant differences were observed across subscales (P<0.05), with the neurobehavioral rehabilitation package showing greater improvement than mental imagery-based therapy in four out of five subscales.</span></span></span><br> <span style="font-size:12pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><b>Conclusion:</b> The findings suggest that both neurobehavioral rehabilitation and mental imagery-based therapy may be beneficial as adjunctive interventions for reducing manic symptoms and cognitive avoidance in patients with BD. Larger controlled trials are needed to confirm these results.</span></span></span><br> &nbsp; Bipolar Disorder, Psychotherapy, Mental Imagery, Cognitive Avoidance, Rehabilitation 0 0 http://jpcp.uswr.ac.ir/browse.php?a_code=A-10-1119-1&slc_lang=en&sid=1 Mahboubeh Bigdeli mahdiehnda@gmail.com No Department of Psychology, Nae.C., Islamic Azad University, Naein, Iran Shahnaz Khaleghipour researchpnu@yahoo.com Yes Department of Psychology, Nae.C., Islamic Azad University, Naein, Iran Mohammad Zare Neyestanak zarehneyestanakm@gmail.com No Department of Psychology, Nae.C., Islamic Azad University, Naein, Iran