“…1963;Bergin, 1962). A number of analogue studies have shown therapist expertness to be positively correlated with the patient's choice of therapist 11 (Corrigan, 1978), levels of rated attraction and trustworthiness (Greenberg, 1969;McKee & Smouse, 1983), information re~all (Guttman & Haase, 1972), attitudinal change (Binderman, Fretz, Scott & Abrams, 1972;Bergin, 1962) and to both self reported and actual behavior change (Dell, 1973;Hoffman & Spencer, 1977). In one of a few naturalistic long term treatment studies, Beutler, et ale (1975) found that patients post hoc perceptions of therapist credibility were significantly and positively related to patient improvement.…”