Working Alliance Inventory — Short Revised
Twelve items measuring Bordin’s goals, tasks and bond, in patient and therapist versions.
Psychometrics
The most widely used alliance measure in research, and the instrument behind most of the alliance–outcome literature. Patient-rated versions predict outcome more strongly than therapist-rated versions.
Cautions and misuse
Because alliance and early symptom change are correlated, controlling for prior improvement is necessary to interpret alliance as a cause. Well-conducted studies do this; headline claims often do not.
Sources
Hatcher, R. L., & Gillaspy, J. A. (2006). Development and validation of a revised short version of the Working Alliance Inventory. Psychotherapy Research, 16(1), 12–25
measure