In this study, the task was to analyze the separate effects of contingent reinforcement (money) and monitoring (counting) on the frequency of responses indicative of anxiety. Observed (physiological) and introspective (covert statements about experiencing anxiety) were used to determine the effects of reinforcement and monitoring on anxiety prone persons. The design contains five separate week-long phases, for each S, with each phase having pre- and post-physiological measures. There were two groups: a high-anxious control group, and another group of high-anxious Ss. The five phases of the experimental group were as follows: (1) monitoring anxious thoughts; (2) contingent reinforcement for a decrement in the presence of anxious thoughts while monitoring absence of anxious thoughts; (3) a week of no monitoring was followed by non-contingent reinforcement; and (4) a week in which the Ss acted as their own controls. While the outcomes remain highly tentative in nature, the study is supportive of the hypothesis that modifying cognitions (i.e., anxious thoughts) in the form of self-verbalizations can result in changes in autonomic or physiological measures. (Author)