General Anxiety Disorder Test
GAD-7
Start the test
Age range
13+ years old
Question count
7
Price
Free
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Test guides
GAD-7 validity and reliability
GAD-7 is widely used because it is brief, easy to administer, and supported by psychometric research. Validation studies report strong internal consistency and useful screening accuracy, especially around the commonly used cutoff score of 10.
Reliability summary
Published research reports strong internal consistency for GAD-7, meaning the items work together to measure anxiety symptom severity. This supports its use as a short standardized symptom scale rather than as seven unrelated questions.
Validity summary
GAD-7 has evidence supporting its use as a generalized anxiety screening measure and has been studied in primary care and general-population settings. In the original validation work, a cutoff of 10 was reported as a useful threshold for identifying likely generalized anxiety disorder cases in primary care.
| Evidence area | What it means | Why it matters |
|---|---|---|
| Internal consistency | The items measure a related symptom construct. | Supports using the total score as a severity estimate. |
| Cutoff score of 10 | Original validation reported sensitivity around 89% and specificity around 82% for GAD. | Explains why 10 is commonly treated as a practical screening threshold. |
| Criterion validity | Scores are compared with clinical diagnostic assessment. | Helps identify useful cutoff points for screening. |
| General-population standardization | The scale is studied outside narrow clinical samples. | Helps contextualize scores across broader use cases. |
| Brief administration | The scale has only 7 items. | Makes it practical for screening and repeated monitoring. |
What the evidence does not prove
- It does not replace clinical diagnosis. Screening accuracy is not the same as a complete diagnostic assessment.
- It does not explain the cause of anxiety. A score summarizes symptoms but does not identify why they are happening.
- It does not cover every anxiety condition equally. Panic, trauma, social anxiety, and obsessive-compulsive symptoms may require more specific tools.
References
- Spitzer RL, Kroenke K, Williams JBW, Lowe B. A brief measure for assessing generalized anxiety disorder: the GAD-7. Archives of Internal Medicine. 2006;166(10):1092-1097.
- Kroenke K, Spitzer RL, Williams JB, et al. Anxiety disorders in primary care: prevalence, impairment, comorbidity, and detection. Ann Intern Med. 2007;146(5):317-325.
- Lowe B, Decker O, Muller S, Brahler E, Schellberg D, Herzog W, Herzberg PY. Validation and standardization of the Generalized Anxiety Disorder Screener (GAD-7) in the general population. Medical Care. 2008;46(3):266-274.
Important note
This page summarizes evidence. It should not host or reproduce proprietary manuals.
Take the GAD-7 testFrequently asked questions
Is GAD-7 validated?
Yes. GAD-7 has validation evidence in primary-care and general-population research, with published studies supporting its reliability and screening usefulness.
What does reliability mean for GAD-7?
Reliability means the items are consistent enough to support a total score that reflects anxiety symptom severity.
Does validity mean GAD-7 diagnoses anxiety?
No. Validity supports the scale as a screening measure, but diagnosis requires broader clinical evaluation.
What makes an online mental health test trustworthy?
A stronger online mental health test should name the instrument, explain what it measures, show scoring logic, cite validation evidence when available, state its limits, and avoid presenting a screening result as a diagnosis.
Why do validation studies matter?
Validation studies show whether a questionnaire behaves consistently and whether scores relate meaningfully to the condition or symptoms being screened. They help users and clinicians understand what a score can and cannot support.
What does screening accuracy mean?
Screening accuracy describes how well a tool identifies people who may need further assessment. It does not mean the tool is always right, and it does not replace a clinician's diagnostic process.
Can AI or an online test replace a mental health professional?
No. AI tools and online tests can organize information and support self-reflection, but they cannot fully evaluate safety, history, context, medical factors, or treatment needs the way a qualified professional can.