“…An impressive body of well-designed clinical research documents the efficacy of exposure therapy for simple phobia (Curtis, Nesse, Buxton, Wright, & Lippman, 1976;Marks, 1981;Matthews, 1978;Th er, 1983), social from the common elements of being exogeneously based and responding well to exposure therapy, the phobic disorders share certain other features. Agoraphobics (Mavissakalian & Michelson, 1982), simple phobics (Thyer & Curtis, 1984), and social phobics (Borkovec, Stone, O'Brien, & Kaloupek, 1974) all evidence signs of significant sympathetic arousal during exposure to their specific anxiety-evoking stimuli, which typically involves increases in heart rate, blood pressure, respiration, and perspiration.…”