The Center for Epidemiologic Studies Depression Scale (CES-D) (Radloff, 1977) is a 20-item scale designed to measure Depressive symptoms.Different versions of the scale have been created which include a subset of the original 20 items.
Reference
Radloff, L. S. (1977). The CES-D Scale: A Self-Report Depression Scale for Research in the General Population. Applied Psychological Measurement, 1(3), 385-401. https://journals.sagepub.com/doi/10.1177/014662167700100306
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