Insomnia Severity Index (ISI)
The gold-standard 7-item clinical metric evaluating sleep onset, maintenance, early waking, and daytime functional impairment.
Scientific ReferenceDOI / Peer-Reviewed Paper ↗
Bastien, C. H., Vallières, A., & Morin, C. M. (2001). Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Medicine, 2(4), 297–307.
📖 Morin, C. M. (1993). Insomnia: Psychological assessment and management. New York: Guilford Press.•⏱ ~3 min•v1
Question 1 of 70%
Difficulty falling asleep