A methodology was developed for bringing smoking behavior in great apes under the control of a contingent food reinforcer. In this procedure, Ss were required to maintain long continuous draw durations (5 sec) against lighted cigarettes in order to obtain candy rewards. By beginning with short criterional durations and gradually working up to the desired response criterion, Ss were successfully habituated to the aversive aspects of smoking. The results indicated that it is possible to both shape and maintain smoking behavior with res ponse-contingent reinforcement. The successful implementation of this procedure suggests that the pulmonary route can be used for drug administration with nonhuman primate species.
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