Abstract
Self-tracking of carbon monoxide (CO) levels was assessed and trained in three current smokers. Single subject withdrawal-reinstatement (ABAB) designs were employed to evaluate the effects of verbal feedback (as to actual CO levels) on subjects' CO estimates. Alveolar CO measures and estimates were obtained from three to five times per day for each subject. Results indicated that with feedback, subjects could be taught to accurately track their CO levels. Further, with sufficient practice, this improved discrimination could be maintained in the absence of feedback. Results are discussed in terms of the potential utility of CO feedback training in a self-management approach to controlling smoking risk.
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