Tobacco smoking may delay habituation of reinforcer effectiveness in humans

Psychopharmacology
Joshua L Karelitz, Kenneth A Perkins

Abstract

The effectiveness of nonconsummatory reinforcers habituate, as their ability to maintain reinforced responding declines over repeated presentations. Preclinical research has shown that nicotine can delay habituation of reinforcer effectiveness, but this effect has not been directly demonstrated in humans. In preliminary translational research, we assessed effects of nicotine from tobacco smoking (vs. a no smoking control) on within-session patterns of responding for a brief visual reinforcer. Using a within-subjects design, 32 adult dependent smokers participated in two experimental sessions, varying by smoking condition: no smoking following overnight abstinence (verified by CO ≤ 10 ppm), or smoking of own cigarette without overnight abstinence. Adapted from preclinical studies, habituation of reinforcer effectiveness was assessed by determining the rate of decline in responding on a simple operant computer task for a visual reinforcer, available on a fixed ratio schedule. Reinforced responding and duration of responding were each significantly higher in the smoking vs. no smoking condition. The within-session rate of responding declined significantly more slowly during the smoking vs. no smoking condition, consistent with del...Continue Reading

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Citations

Oct 17, 2020·Journal of Health Communication·Jennifer C MorganJoseph N Cappella

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Software Mentioned

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