Document Detail

Discounting delayed and probabilistic monetary gains and losses by smokers of cigarettes.
MedLine Citation:
PMID:  16167142     Owner:  NLM     Status:  MEDLINE    
RATIONALE: Nicotine dependence has been associated with impulsivity and discounting delayed/uncertain outcomes.
OBJECTIVES: This study had two main objectives: (1) to examine the relationship between the number of cigarettes consumed per day and the degree to which delayed and uncertain monetary gains and losses are discounted by smokers, and (2) to determine the relationship between the estimated dose of nicotine intake per day and the degree to which four types of discounting occur.
METHODS: Twenty seven habitual smokers and 23 never smokers participated in this experiment. They were required to choose between immediate and delayed monetary rewards (or losses), or between guaranteed and probabilistic rewards (or losses).
RESULTS: The degree to which delayed monetary gains were discounted was significantly and positively correlated with both the number of cigarettes smoked and the estimated dose of nicotine intake per day. Conversely, there was no relationship between smoking and the remaining three types of discounting. Also, mild smokers in our sample did not differ from never smokers in discounting monetary gains or losses.
CONCLUSIONS: In general, our results suggest that both the frequency of nicotine self-administration, as well as the dosage, are positively associated with greater delay discounting of gains. One neuropsychopharmacological explanation for this effect is that chronic nicotine intake may induce neuroadaptation of the neural circuitry involved in reward processing.
Yu Ohmura; Taiki Takahashi; Nozomi Kitamura
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-10-19
Journal Detail:
Title:  Psychopharmacology     Volume:  182     ISSN:  0033-3158     ISO Abbreviation:  Psychopharmacology (Berl.)     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-10-19     Completed Date:  2006-02-14     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  7608025     Medline TA:  Psychopharmacology (Berl)     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  508-15     Citation Subset:  IM    
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MeSH Terms
Area Under Curve
Impulsive Behavior / etiology,  psychology*
Retrospective Studies
Smoking Cessation / economics,  psychology*
Social Behavior
Tobacco Use Disorder / complications,  economics,  psychology*

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