The methodological development of a scale to measure attitudes toward physicians and primary medical care, and efforts to ascertain its reliability and validity have been reported previously. As a direct result of further experience with this scale, several modifications were incorporated and the revised scale subjected to additional evaluation. The modifications specifically address the methods employed in developing a revised set of items, the rationale for changing the response alternative format, and the derivation of a modified Scale Product scoring method. When compared to the traditional Thurstone scoring method, the reliabilities of the Scale Product method, using corrected split-half reliability coefficients, were found to be consistently superior. The complete scale is published with scale values and direction of affect, such that it can be used without modification or additional information by other investigators.