Reliability and validity of the Chinese-Version of the Revised Anhedonia Scale

Objective To evaluate the reliability and validity of the Revised Social Anhedonia Scale-Chinese Version (RSAS-C). Methods 314 healthy subjects and 204 schizophrenic patients were asked to completed the RSAS-C. Two weeks later, 75 healthy subjects and 102 schizophrenic patients who were randomly selected from the total sample completed the RSAS-C again to compute the test-retest reliability. The criterion-related validity was evaluated by correlating the RSAS-C with the total score of TAS-20 and the Negative score of PANSS. Results (1) The Cronbach α-coefficient for RSAS-C of total sample, patient group and control group were 0.787, 0.804, 0.759 respectively. The split half of reliability of those were 0.715, 0.740, 0.676. And the test -retest reliability of those were 0.902, 0.916, 0.831. (2) The scores of total sample, patient group and control group for RSAS-C correlated with TAS-20 total score were 0.261, 0.398, 0.154(all P<0.01). The negative score of PANSS correlated with the score for RSAS-C of patient group was 0.303(P<0.01). (3)Schizophrenic patients had higher scores of the RSAS-C than the healthy subjects, it suggested that the RSAS-C had good discriminant validity. Conclusion RSAS-C has good reliability and validity in application to Chinese people. Key words: Social Anhedonia; Reliability; Validity; Schizophrenia