Abstract
The purpose of the present study was to develop a multidimensional supervisee rating scale of supervisor competence based on the integrated model, the American Psychological Association (APA) guidelines for supervisor competence, and domains of the benchmark model. Specifically, the present study involved the development of the Supervisor Competence Rating Scale (SCRS) and the evaluation of its psychometric properties. Results from exploratory and confirmatory factor analyses using data from a web-based sample of 374 doctoral-level supervisees (practicum students, interns, and postdoctoral fellows) from APA-accredited clinical and counseling psychology programs, internship training sites, and postdoctoral training sites yielded a five-factor model of the SCRS: Supervisory alliance, knowledge about the profession, diversity, supervision knowledge and skills, and ethics and professionalism. An evaluation of the scale's internal consistency provided initial evidence of its reliability. Additionally, strong support for the convergent validity of the SCRS was evidenced by its significant and positive relationships with key theoretical concepts including supervisor's impact in supervision, working alliance in supervision, and supervisor's cultural competence. These findings suggested that the SCRS is a comprehensive and psychometrically sound scale that can be used to evaluate the competencies of clinical supervisors and supervisors in training. Study limitations as well as directions for future research are discussed.