Insomnia Severity Index (ISI)
A 7-item self-assessment for insomnia severity and daytime impact.
Instruction: Rate your sleep during the past two weeks.
Difficulty falling asleep
Test basis
Format: ISI. The score is calculated from your answers using the scale shown in the test, so answer based on your recent real experience rather than trying to choose a "right" result.
Not a diagnosis
Sleep problems can be related to stress, anxiety, medical issues, or routines; this test is not a diagnosis. If you feel unsafe, at risk of harming yourself, experience violence, or are in severe distress, contact local emergency services, a crisis line, or a qualified professional immediately.
Content principles
We separate self-help education from medical advice, keep the interpretation cautious, and update test pages when standards or editorial guidance change. How we prepare content.