Impact of Event Scale (original).

IES

What it measures

Subjective stress reactions to a specific life event across two subscales: intrusion and avoidance (no hyperarousal)

Length and format

15 items. 4-point frequency (0/1/3/5, not at all to often), past 7 days; intrusion + avoidance subscales (self-report questionnaire)

Language versions

Many languages (broad pre-IES-R translation base)

Normative data

No normative data held in our reference library for this instrument. That is a statement about our library, not about the published literature.

Licence

public-domain / open

Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.

Reference

Horowitz, M., Wilner, N., & Alvarez, W. (1979). Impact of Event Scale: a measure of subjective stress. Psychosomatic Medicine, 41(3), 209-218.