Geriatric Depression Scale (GDS)

Abstract

The Geriatric Depression Scale (GDS) is a widely utilized and well-validated screening instrument specifically developed for assessing symptoms of depression in the aged population. Developed initially in 1982 by Yesavage and colleagues, the original scale contained 100 items but was quickly condensed into the 30-item Geriatric Depression Scale-Long Form (GDS-LF). A shorter, 15-item version (GDS-SF) was subsequently created by Sheikh and Yesavage in 1986 to facilitate easier administration in clinical and community settings. The scale employs a simple Yes/No response format, making it particularly suitable for older adults, even those with mild cognitive impairment. It demonstrates strong psychometric properties, including high internal consistency and reliability, and is effective in discriminating the severity and presence of depressive symptoms.

Keywords

Geriatric Depression Scale, GDS, Geriatric, Depression, Screening, Elderly, Affective Disorders, Psychometrics, GDS-LF, GDS-SF

Authors

Yesavage, Jerome A., Brink, T. L., Rose, T. L., Lum, O., Huang, V., Adey, M., Leirer, Von O. (1982); Sheikh, J. I., Yesavage, J. A. (1986)

Purpose

The primary purpose of the Geriatric Depression Scale (GDS) is to serve as a specialized screening instrument for identifying potential depressive symptoms in the elderly population. It was specifically designed to minimize reliance on somatic symptoms often associated with depression in younger populations, which can overlap with physical illnesses common in geriatric patients. The GDS is intended for use in various settings, including nursing homes, community centers, and medical outpatient clinics, providing clinicians and researchers with a reliable initial assessment tool.

The scale is not intended to provide a definitive psychiatric diagnosis but rather to flag individuals who require a more comprehensive clinical assessment. Its simplicity allows for rapid administration, either self-administered or through an observer, making it highly practical for large-scale screening efforts.

Construct

The GDS measures the psychological construct of depression, focusing on affective and cognitive symptoms relevant to older adults. Unlike general depression scales, the GDS emphasizes feelings of hopelessness, worthlessness, dissatisfaction with life, and withdrawal from activities, while downplaying somatic complaints (such as changes in appetite or sleep) which may be confounded by physical health status or medication side effects common in the elderly.

The scale assumes that depression in the aged manifests primarily through subjective emotional and cognitive states. The scoring system reflects the severity of these symptoms, allowing the instrument to differentiate between normal mood, mild depression, and moderate to severe depression across both the Long Form (GDS-LF) and the Short Form (GDS-SF).

Validity

The GDS demonstrates strong evidence of validity across multiple studies. It possesses criterion validity, showing high correlations with established measures such as the Zung Self-Rating Depression Scale (SDS) (r = 0.84) and the Hamilton Rating Scale for Depression (HRS-D) (r = 0.83).

Furthermore, the GDS is a valid tool for discriminating symptom severity and differentiating the presence versus absence of depression based on DSM-IV criteria. However, it is noted that the scale is not effective in discriminating among different diagnostic groups and should not be used as the sole diagnostic measure. Specific cut-off scores have demonstrated high diagnostic accuracy: using a cutoff score of 11 (GDS-LF), the scale achieved a sensitivity (true positives) of 84% and specificity (true negatives) of 95%. At a cutoff of 14, these values were 80% and 100%, respectively, confirming its utility as an indicator of possible depression. Importantly, research indicates that the validity of the GDS remains robust and is generally unaffected by key individual difference factors, including age, education level, gender, race, and culture.

Reliability

The reliability of the Geriatric Depression Scale is consistently high, underscoring its stability and internal consistency. The scale exhibits a high degree of internal consistency, evidenced by a Cronbach’s alpha coefficient of 0.94 and a split-half reliability score of 0.94 for the GDS-LF. These values indicate that the items within the scale measure the same underlying construct effectively.

Test-retest reliability has been established over different intervals, showing that scores reflect stable individual differences over time. Specifically, test-retest reliability scores were 0.85 (p < 0.001) for administrations one week apart (Yesavage et al., 1982) and 0.85 (p < 0.001) for administrations one month apart (Parmelee, Lawton & Katz, 1989). These findings confirm that the GDS provides consistent results when measuring depressive symptoms in the elderly population.

Factor Analysis

While the source content does not provide a detailed factor analysis structure, the development of the 15-item Short Form (GDS-SF) implies an underlying factor structure that captures the core components of depression relevant to older adults. Studies, such as those examining the GDS-15 in Iranian elderly, have confirmed its factor structure and cross-cultural suitability. The GDS items generally group into factors related to mood, withdrawal/social engagement, somatic concerns (though minimized), and cognitive impairment/memory issues, although the scale’s primary strength lies in its overall screening utility rather than detailed factor differentiation.

Instrument

Test Type: Screening inventory/Self-report scale

Format: The GDS-Long Form (GDS-LF) contains 30 items, and the GDS-Short Form (GDS-SF) contains 15 items. Both forms use a simple dichotmous (Yes/No) response format, which is advantageous for minimizing cognitive load on elderly respondents.

Language Available: The GDS has been translated and validated in numerous languages globally. The original source mentions a Farsi GDS-15 article, indicating availability in Farsi/Persian, among others.

Population Group: Clinical and community-dwelling elderly individuals.

Age Group: Geriatric population (typically 65 years and older).

Population Details: The GDS is useful in a variety of settings, including nursing homes, community settings, and with medical inpatients and outpatients. It has been shown to be adequate for screening mildly demented subjects but is not considered valid for screening those with significant cognitive impairment.

Test Methodology: The scale can be self-administered or administered by an observer (e.g., a trained clinician or research assistant). Administration by phone has also been shown to maintain its reliability and validity. The scoring provides cut-off thresholds for classifying symptom severity:

• GDS-LF (0-30): Normal (0–10), Mild Depression (11–20), Moderate to Severe Depression (21–30).
• GDS-SF (0-15): Normal (0–4), Mild Depression (5–9), Moderate to Severe Depression (10–15).

Keywords

GDS, Internal Consistency, Test-Retest Reliability, Sensitivity, Specificity, Validity, Zung SDS, Hamilton HRS-D, Cronbach’s Alpha, Psychometric Properties

Authors

Author ORCID Identifier: Not provided in source content.

Affiliation Email addresses: The source mentions [email protected] (Dr. Robab Sahaf, regarding Farsi translation).

Correspondence Address: The primary authors were affiliated with Stanford University and the Palo Alto Veterans Administration Medical Center at the time of publication.

Permissions & Fee and Test Year

The Geriatric Depression Scale (GDS) was first developed and published in 1982 (GDS-LF). The short form (GDS-SF) was developed in 1986. The GDS is generally considered to be in the public domain and is widely used without requiring specific permission or fees, particularly for non-commercial research and clinical use, although users should always verify current licensing terms.

The original PDF of the instrument can be downloaded here: http://www.health.qld.gov.au/qhcrwp/docs/clinical_measure.pdf

Reference’s

• BRINK, T. A., YESAVAGE, J. A., LUM, O., HEERSEMA, P., ADEY, M. and ROSE, T. L. (1982) Screening tests for geriatric depression. Clin Gerontologist 1, 37-44.
• YESAVAGE, JEROME A., BRINK, T. L., ROSE, T.L., LUM, O., HUANG, V., ADEY, M. and LEIRER, VON O. (1983) DEVELOPMENT AND VALIDATION OF A GERIATRIC DEPRESSION SCREENING SCALE: A PRELIMINARY REPORT. J Psychiatr Res. 1982-1983;17(1):37-49.
• Sheikh JI, Yesavage JA. Geriatric Depression Scale (GDS): recent evidence and development of a shorter version. Clin Gerontol. 1986 June;5(1/2):165-173.
• Yesavage JA. Geriatric Depression Scale. Psychopharmacol Bull. 1988;24(4):709-711.
• Seyed Kazem Malakouti, Paridokht Fatollahi, Arash Mirabzadeh, Mojgan Salavati and Taher Zandi. Reliability, validity and factor structure of the GDS-15 in Iranian elderly. INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY. Int J Geriatr Psychiatry 2006; 21: 588–593.
• Aikman & Oehlert (2001); Holroyd & Clayton (2000).
• Parmelee, Lawton & Katz (1989).
• Watson, Zimmerman, Cohen, & Dominik (2009).
• Marc, Raue & Bruce (2008); Rait et. al., (1999); Harralson et. al., (2002).
• Burke, Roccaforte, Wengel, Conley & Potter (1995).
• McGivney, Mulvihill & Taylor (1994).
• Lesher & Berryhill (1994); Sansoni et. al., (2007).

Items of the Geriatric Depression Scale (GDS)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

(to be completed by a trained clinician)

DATE: TIME (24hr):

Choose the best answer for how you have felt over the past week:

Yes / No

• [] [] 1. Are you basically satisfied with your life?
• [] [] 2. Have you dropped many of your activities and interests?
• [] [] 3. Do you feel that your life is empty?
• [] [] 4. Do you often get bored?
• [] [] 5. Are you in good spirits most of the time?
• [] [] 6. Are you afraid that something bad is going to happen to you?
• [] [] 7. Do you feel happy most of the time?
• [] [] 8. Do you often feel helpless?
• [] [] 9. Do you prefer to stay at home, rather than going out and doing new things?
• [] [] 10. Do you feel you have more problems with memory than most?
• [] [] 11. Do you think it is wonderful to be alive now
• [] [] 12. Do you feel pretty worthless the way you are now
• [] [] 13. Do you feel full of energy?
• [] [] 14. Do you feel that your situation is hopeless?
• [] [] 15. Do you think that most people are better off than you are

The following is the 30-item version, typically scored Yes/No:

• 1. Are you basically satisfied with your life? Y / N
• 2. Have you dropped many of your activities and interests? Y / N
• 3. Do you feel that your life is empty? Y / N
• 4. Do you often get bored? Y / N
• 5. Are you hopeful about the future? Y / N
• 6. Are you bothered by thoughts you can’t get out of your head? Y / N
• 7. Are you in good spirits most of the time? Y / N
• 8. Are you afraid that something bad is going to happen to you? Y / N
• 9. Do you feel happy most of the time? Y / N
• 10. Do you often feel helpless? Y / N
• 11. Do you often get restless and fidgety? Y / N
• 12. Do you prefer to stay at home, rather than going out and doing new things? Y / N
• 13. Do you frequently worry about the future? Y / N
• 14. Do you feel you have more problems with memory than most? Y / N
• 15. Do you think it is wonderful to be alive now? Y / N
• 16. Do you often feel downhearted and blue? Y / N
• 17. Do you feel pretty worthless the way you are now? Y / N
• 18. Do you worry a lot about the past? Y / N
• 19. Do you find life very exciting? Y / N
• 20. Is it hard for you to get started on new projects? Y / N
• 21. Do you feel full of energy? Y / N
• 22. Do you feel that your situation is hopeless? Y / N
• 23. Do you think that most people are better off than you are? Y / N
• 24. Do you frequently get upset over little things? Y / N
• 25. Do you frequently feel like crying? Y / N
• 26. Do you have trouble concentrating? Y / N
• 27. Do you enjoy getting up in the morning? Y / N
• 28. Do you prefer to avoid social gatherings? Y / N
• 29. Is it easy for you to make decisions? Y / N
• 30. Is your mind as clear as it used to be? Y / N