Mental Health - depression
Number and Types of Questions
Twenty scaled questions
Adults between the ages of 20 and 65 who may be suffering from depression13
Studies have found that the Zung Depression Scale is a reliable method of discerning between normal and psychologically depressed individuals. The test has been criticized for placing equal weight on each question it asks. This means that a highly significant symptom of depression, such as sadness, carriers no more weight in this index than a less significant symptom of depression.14
The Zung Depression Scale is a paper and pencil tool requiring 5-10 minutes to administer. It should be administered by professionally trained clinicians or licensed social workers and should be used as a complement rather than a substitute for an in-depth interview.15
Source or Publisher
William K. Zung
State(s) Believed to be Using
13 Keyser, Daniel J. and Richard C. Sweetland, editors. Test Critiques. Kansas City, MO Test Corporation of
America, 1984 - 1994, p. 596.
14 Keyser pp. 599-601.
15 State of Virginia, Department of Human Services, undated.