Document Type: Original Article


1 Department of Psychology, Tabriz Branch, Islamic Azad Universityi, Ardabil, Iran

2 Department of Psychology, University of Mohaghegh Ardabili, Ardabil, Iran

3 Ph.D. Student of psychology, Islamic Azad University, Tabriz, Iran

4 Department of Psychology, Ardabil branch, Islamic Azad University, Ardabil, Iran



Objective: The purpose of this study was to compare the sustained attention and cognitive deficits in patients with schizophrenia and bipolar disorder type II. Methods: The research method was causal-comparative (case-control) type. Statistical population was all the patients with bipolar disorder type II and schizophrenia at Isar and Fatemi hospitals in 2015 in Ardabil, Iran. 50 patients (25 cases per group) were selected by available sampling. Wisconsin Card Sorting Test (WCST) and Attention Test (D2) were used for collecting data. Data analysis was performed by multivariate analysis of variance (MANOVA). Results: The results showed that the performance of schizophrenic patients in both attention and cognitive deficits tests was lower than bipolar patients. These findings can be effective in improving cognitive deficits and attention performance as well as cause significant changes in communitybasedrehabilitation ways.


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