MOOD & INTERNALIZING

PHQ-9: Depression

Depressive symptom severity over the last two weeks.

● about 2 min ● scored on your device ● validated screener

Patient Health Questionnaire-9. The most-used depression screener worldwide; the 9 items map onto the DSM criteria for a major depressive episode. Public domain (released by Pfizer). Item 9 screens for thoughts of self-harm.

License: public domain. A screener points at what is worth a closer look; a clinician makes a diagnosis.

Take the PHQ-9

Part of Spectra: free, private psychological self-tests, grouped by the mechanism underneath rather than by diagnostic label. Not sure where to start? Take the broad screen.