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BECK DEPRESSION INVENTORY (BDI)

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Depression is a common mental health issue that affects millions of people worldwide. The Beck Depression Inventory (BDI) is a widely used self-report measure designed to assess the severity of depression symptoms. The BDI was developed in 1961 by Aaron T. Beck and is used to diagnose and measure the severity of depression in both clinical and non-clinical populations (Beck, 1961).

The BDI consists of 21 questions that assess the presence and severity of depressive symptoms, such as sadness, guilt, difficulty concentrating, and hopelessness. Each question contains four statements that range in severity from 0 (no symptoms) to 3 (severe symptoms). After completing the questionnaire, the score is calculated from the total number of points. The points are used to categorize the severity of depression: 0–13 = minimal depression, 14–19 = mild depression, 20–28 = moderate depression, and 29–63 = severe depression (Beck & Steer, 1987).

The BDI has been widely used in research and clinical settings to measure the severity of depression. It is also used to track changes in depressive symptoms over time and is considered a reliable and valid measure of depression (Beck & Steer, 1987).

A meta-analysis of the BDI’s reliability and validity conducted in 2007 showed that the BDI has high internal consistency (Cronbach’s alpha = 0.92) and test-retest reliability (r = 0.86). It also showed that the BDI is a valid measure of depression severity as evidenced by high correlations with other measures of depression (r = 0.87; Beck, Steer, & Brown, 1996).

Overall, the BDI is an effective and reliable tool for assessing the severity of depression. It is widely used in both research and clinical settings and is a reliable and valid measure of depression.

References

Beck, A. T., & Steer, R. A. (1987). Beck Depression Inventory (BDI). San Antonio, TX: Psychological Corporation.

Beck, A. T., Steer, R. A., & Brown, G. K. (1996). Manual for the Beck Depression Inventory-II. San Antonio, TX: Psychological Corporation.

Beck, A. T. (1961). Depression: Clinical, Experimental, and Theoretical Aspects. New York: Harper & Row.

Furukawa, T. A., Omori, I. M., Watanabe, N., Nakagawa, A., & Mino, Y. (2007). The psychometric properties of the Beck Depression Inventory-II: A systematic review. Journal of Psychosomatic Research, 62(3), 543–558. https://doi.org/10.1016/j.jpsychores.2006.09.001

Cite This Article

looti, M. (2026, January 31). BECK DEPRESSION INVENTORY (BDI). Encyclopedia of psychology. https://encyclopedia.arabpsychology.com/beck-depression-inventory-bdi/
looti, Mohammed. “BECK DEPRESSION INVENTORY (BDI).” Encyclopedia of psychology, 31 January 2026, https://encyclopedia.arabpsychology.com/beck-depression-inventory-bdi/.
looti, Mohammed. “BECK DEPRESSION INVENTORY (BDI).” Encyclopedia of psychology. January 31, 2026. https://encyclopedia.arabpsychology.com/beck-depression-inventory-bdi/.