Confronta i metodi

	Scala di Accordo Paziente-Terapista	Working Alliance Inventory
Campo	Ricerca in psicoterapia	Ricerca in psicoterapia
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1965	1989
Ideatore	Edward H. Nash, Robert Hoehn-Saric	Adam O. Horvath & Leslie S. Greenberg
Tipo	Client/Therapist-rated	Therapist/Client-rated
Fonte seminale	Nash, E. H., Hoehn-Saric, R., Battle, C. C., Stone, A. R., Imber, S. D., & Frank, J. D. (1965). Systemic preparation of patients for psychotherapy: Effects on therapy behavior and outcome. Journal of Psychiatric Research, 2(4), 267–281.	Horvath, A. O., & Greenberg, L. S. (1989). Development and validation of the Working Alliance Inventory. Journal of Counseling Psychology, 36(2), 223–233.
Alias	PTAS, Goal Agreement Scale	WAI, WAI-36, WAI-SF, WAI-SR
Correlati	4	4
Sintesi	The Patient-Therapist Agreement Scale (PTAS) measures the degree to which client and therapist agree on therapy goals, treatment focus, and expected treatment duration—a core component of the therapeutic alliance. Developed by Nash and colleagues in their foundational study of psychotherapy preparation, the PTAS operationalizes the principle that shared understanding of 'what we're working on and how long it will take' predicts engagement and outcome. It is used primarily in research and training to assess goal alignment and identify mismatches that may undermine treatment.	The Working Alliance Inventory (WAI) is a validated, empirically supported measure of the therapeutic alliance—the collaborative relationship between therapist and client. Developed by Horvath and Greenberg in 1989, the WAI operationalizes Bordin's tripartite model of alliance: agreement on goals, agreement on tasks, and emotional bond. It is one of the most widely used alliance measures in psychotherapy research and is a strong predictor of psychotherapy outcome across diverse theoretical orientations and client populations.