Psychometric properties of the Spanish version on of the working alliance theory of change inventory (WATOCI)

This Brief Report presents a study of the psychometric qualities of the Working Alliance Theory of Change Inventory (Spanish version). WATOCI's reliability coefficient based on the internal consistency is good. Results seem to suggest (a) that the theoretical structure of the instrument should be further refined, and (b) that therapeutic alliance may be a more unified construct than is usually thought of. While it is theoretically possible to divide it into different components, clinical research with psychotherapy patients seems to indicate that goals, tasks, bond and theory of change are closely related.