Insomnia Severity Index (ISI)
A seven-item index of insomnia severity: sleep onset, maintenance, early waking, sleep quality, sleepiness, restorative sleep, and how much sleep problems affect daily functioning.
This questionnaire is not available yet
- The instrument's rights holder has not granted permission for use on this platform. We publish the exact status openly.
- The interpretation content for this instrument is awaiting clinical review. We do not publish screening experiences before review is complete.
- Estimated time
- 3 min
- 7 questions
- 7
- Instrument version
- 1.0
- Time frame
- The last 2 weeks
About this assessment
A seven-item index of insomnia severity: sleep onset, maintenance, early waking, sleep quality, sleepiness, restorative sleep, and how much sleep problems affect daily functioning.
Developed by: Morin CM. Insomnia: Psychological Assessment and Management. Guilford Press; 1993. Bastien CH, Vallières A, Morin CM. Validation of the Insomnia Severity Index as an outcome measure for insomnia studies. Sleep Med. 2001;2(4):347-353.
Published in: https://www.morrisinstitute.org/055resources/research/tools/insomniaseverityindex/index.html
Source & development: ISI is copyright D. Morin and is distributed for clinical, research, and industry use with citation. Written permission for commercial web distribution has NOT yet been obtained. Disabled until documented in docs/LICENSES.md.
This assessment is an informational screening tool, not a medical diagnosis. Results are based on your responses and should not replace evaluation by a qualified healthcare professional.