Reliability, Discriminant and Predictive Validity of the Zung Self-Rating Depression Scale

The present study was to assess the potential usefulness of the Zung Self-rating Scale with 173 family escorts, 218 nondepressed, and 369 depressed clients. Findings for reliability and for discriminant and predictive validity parallel data reported by others. It was concluded that the scale, combined with a corroborative clinical interview, may be useful for diagnostic purposes.