Related Experiment Videos
Impact of Event Scale: psychometric properties
Eva C Sundin1, Mardi J Horowitz
1Department of Psychology, Umea University, Umea, Sweden.
Summary
The Impact of Event Scale (IES) effectively measures stress reactions after trauma. This review confirms its stable structure and clinical relevance for identifying individuals needing treatment.
Area of Science:
- Psychological assessment
- Trauma studies
- Psychometrics
Background:
- The Impact of Event Scale (IES) has been a primary tool for assessing stress reactions post-trauma for over two decades.
- Its widespread application highlights its significance in clinical and research settings.
Purpose of the Study:
- To systematically review and evaluate the psychometric properties of the Impact of Event Scale (IES).
- To ascertain the reliability and validity of the IES in diverse traumatic event contexts.
Main Methods:
- A comprehensive literature review was conducted.
- Studies examining the psychometric performance of the IES were analyzed.
Main Results:
- The IES demonstrates a stable two-factor structure across various traumatic events.
- The scale effectively differentiates stress reactions at different post-event time points.
- Convergent validity was established with observer-diagnosed post-traumatic stress disorder.
- Extensive use in psychopharmacological trials underscores its clinical utility.
Conclusions:
- The Impact of Event Scale (IES) is a validated and valuable instrument for measuring stress responses to a broad spectrum of traumatic events.
- It serves as a crucial tool for identifying individuals who may benefit from therapeutic interventions.