Objective:To examine the reliability and validity of the Chinese version of the Dysexecutive Questionnaire (DEX).Methods:145 patients with obsessive-compulsive disorder(OCD) were tested by the DEX,the Yale-Brown Obsessive Compulsive Scale(Y-BOCS)and the Digit Span Backwards Test.Results:The Cronbach's α coefficient of the DEX in OCD was 0.888;the test-retest reliability was 0.488;Score of the DEX was correlated significantly with score of the YBOCS(r =0.192,P