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This measure is used in psychotherapy to assess the quality of the collaborative relationship between therapist and client. The Working Alliance Inventory – Short Form (WAI-S) provides a brief, structured appraisal of key alliance components, including agreement on goals, agreement on tasks, and the relational bond.
Developed by Adam O. Horvath and Leslie S. Greenberg, it consists of 11 items and typically takes about 3 minutes to complete. It may be administered to support clinical monitoring over the course of treatment and to guide discussion when perceptions of the working relationship appear discrepant. In routine practice, the Working Alliance Inventory – Short Form (WAI-S) can be used to help identify alliance strengths and potential barriers to engagement that may warrant clarification or intervention.