Generalized Anxiety Disorder-7
Generalized Anxiety Disorder-7 Scale · Also known as: GAD-7
The GAD-7 is a brief 7-item self-report questionnaire designed to screen for and measure the severity of generalized anxiety disorder in adolescents and adults. Developed by Spitzer, Kroenke, Williams, and Löwe in 2006, it has become one of the most widely used anxiety screening tools in primary care, mental health research, and clinical practice due to its brevity, excellent psychometric properties, and ease of administration.
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When to use it
The GAD-7 is recommended for screening and symptom severity monitoring in primary care, emergency departments, mental health clinics, and research settings. It is suitable for adolescents (aged 12 and older) and adults. Use it as an initial screening tool before formal diagnostic assessment, as a baseline measure before treatment, or as a repeated measure to track response to intervention. It is less suitable for diagnosing specific anxiety disorders (e.g., social anxiety disorder, panic disorder) alone, and should not be used in isolation for diagnostic decision-making.
Strengths & limitations
- Brevity and efficiency — 7 items completed in under 3 minutes, facilitating use in busy clinical settings.
- Excellent psychometric properties — internal consistency (Cronbach's α ≥ 0.88), good convergent validity with longer anxiety measures, and strong test-retest reliability.
- Sensitivity and specificity — at the cutoff score of 10, demonstrates 89% sensitivity and 97% specificity for GAD in primary care populations.
- Validated across populations — extensively translated and validated in 50+ languages, clinically useful in diverse cultural and health-care settings.
- Screening tool, not diagnostic — GAD-7 cannot confirm a diagnosis of generalized anxiety disorder; clinical interview is required.
- High sensitivity to change may complicate measurement stability — even small fluctuations in worry can shift scores, potentially reducing specificity for severe cases.
- Does not assess worry content — by design, it measures frequency and intensity but not the themes or domains of worry, limiting clinical formulation.
Frequently asked
Can the GAD-7 be used to diagnose generalized anxiety disorder?
No. The GAD-7 is a screening and severity measure, not a diagnostic tool. Diagnosis requires a clinical interview assessing DSM-5 criteria (worry present more days than not for at least 6 months, difficulty controlling worry, associated physical or cognitive symptoms). Use GAD-7 as the first step; elevated scores should prompt further diagnostic evaluation.
What is the best cutoff score to use?
In primary care, a cutoff of 10 is commonly used (maximizing sensitivity and specificity for GAD). However, some clinicians use 8 for higher sensitivity when screening is prioritized. For monitoring treatment response, even small changes (e.g., 2–3 points) may be clinically meaningful. Consider your setting and population when selecting a cutoff.
Is the GAD-7 free to use?
Yes. The GAD-7 is in the public domain and free for clinical and research use without permission or license fee. It is available in numerous languages and can be downloaded from peer-reviewed publications or the authors' websites.
How often should I administer the GAD-7 during treatment?
There is no fixed schedule. In clinical practice, administering it at baseline, every 4 weeks during active treatment, and at termination is common. Some therapies (e.g., cognitive-behavioral therapy) may use weekly administration. For research, use your protocol's specified intervals.
Sources
- Spitzer, R. L., Kroenke, K., Williams, J. B., & Löwe, B. (2006). A brief measure for assessing generalized anxiety disorder: The GAD-7. Archives of Internal Medicine, 166(10), 1092-1097. DOI: 10.1001/archinte.166.10.1092 ↗
How to cite this page
ScholarGate. (2026, June 3). Generalized Anxiety Disorder-7 Scale. ScholarGate. https://scholargate.app/en/clinical-psychology/gad-7
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
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