T HE Rosenzweig Picture-Frustration Study (referred to herein as the P-F) yields, among other measures, a Group Conformity Rating (GCR) [10, p. 201]. Rosenzweig states that the GCR "forms one basis for judging social adjustment" [11, p. 168], is indicative of "capacity for conformity with conventional behavior under stress" [11, p. 172], and may reveal whether a subject is "capable of conventional responses in social situations and . . . probably . . . , at least superficially, better adjusted" [11, p. 180].Capacity or capability, of course, can only be inferred, since neither is necessarily ever revealed in overt behavior. Rosenzweig's concept of "group conformity" may be said to be at the level of a hypothetical construct, and subject to experimental verification against an external criterion, but not subject to disproof by the same method. At least one corollary can, however, be deduced from the concept, and furnish a hypothesis which can be tested against a criterion internal to the GCR.For those unfamiliar with the mechanics of the P-F and GCR, a brief description, paraphrased from the manual [10, pp. 165-166, 201], may serve to clarify some of the arguments to follow.Description of the GCR. The items are cartoonlike pictures, each depicting two persons involved in a mildly frustrating situation of common occurrence. One person is shown saying certain words which either help to describe the frustration of the other individual, or which are themselves actually frustrating to him. The subject is instructed to write the first appropriate reply which enters his mind. 1This study was conducted at the Allegheny Vocational Counseling Center with the assistance of a grant from the Buhl Foundation.