BODY, PAIN & SLEEP
CRD: Circadian rhythm
Whether your body clock may be drifting rather than broken.
● about 2 min
● scored on your device
● original Spectra check
Circadian-drift check. A flag, not a diagnosis: it asks whether your sleep timing drifts on its own — the pattern behind delayed-phase and non-24 rhythms, invisible to an ordinary sleep questionnaire and easily mistaken for plain sleep deprivation.
License: original (Spectra). A screener points at what is worth a closer look; a clinician makes a diagnosis.
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.