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Construct Validity of Outcome Rating Scale (ORS) Scores in Clinical Samples: Extension of Harris, Murphy, and Rakes'
1Department of Counseling, School, and Educational Psychology, University at Buffalo , Buffalo, NY, USA.
Purpose:
A recent review of 24 studies primarily evaluated psychometric properties of the Outcome Rating Scale (ORS) related to coefficient alpha and convergent validity.
Method:
To provide a fuller picture, this review examined effect size (ES) estimates and the full range of correlations between ORS scores and related measures.
Results:
Mean ORS ESs equaled 1.00 for 44 comparison periods. ORS scores correlated highest with measures of depression and evidenced larger ESs in depression treatments.
Discussion:
The ORS functions as a robust measure for detecting client progress in clinical samples that were primarily young, female, and Caucasian. Some results suggest ORS scores primarily reflect a rapid response to interventions.
Conclusion And Limitations:
Future research should assess ORS scores' psychometric properties in response to interventions with more heterogeneous client samples as well as its capacity to monitor change beyond initial sessions.
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