| The role of context in risky choice. | |
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MedLine Citation:
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PMID: 21291963 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Human choice behavior was assessed in a concurrent-chain schedule, where two equal initial links (IL) each led to a distinct terminal-link (TL). One TL was associated with a fixed ratio schedule of reinforcement, while the other was associated with a bi-valued mixed ratio schedule of reinforcement, whose arithmetic mean equaled the Fixed TL schedule. The fixed component (FR50; FR25; FR5) was arranged to be equal to the alternative mixed component in each condition (FR1/99; FR1/49; FR1/9), and choice behavior was measured by proportion of responses to each IL. In addition, the IL duration varied across conditions (VI 30s; VI 15s; FI 1s). Preference for the mixed option was observed with longer durations (e.g., when IL=VI 30s and TL=FR1/99). Participants were relatively indifferent in other conditions, though the results suggested a monotonic increase in preference as either durations or programmed efforts increased. It is concluded that both choice and the conditioned reinforcement value of the mixed option is contextually based, so that the value of a stimulus correlated with an immediate reward (i.e., FR 1) is enhanced the greater the temporal context in which the FR1 is embedded. |
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Authors:
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Stephen F Meyer; Dan R Schley; Edmund Fantino |
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Publication Detail:
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Type: Journal Article Date: 2011-02-02 |
Journal Detail:
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Title: Behavioural processes Volume: 87 ISSN: 1872-8308 ISO Abbreviation: Behav. Processes Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-04-22 Completed Date: 2011-08-17 Revised Date: 2012-05-02 |
Medline Journal Info:
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Nlm Unique ID: 7703854 Medline TA: Behav Processes Country: Netherlands |
Other Details:
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Languages: eng Pagination: 100-5 Citation Subset: IM |
Copyright Information:
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Published by Elsevier B.V. |
Affiliation:
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University of California San Diego, UCSD, San Diego, CA 92093, United States. sfmeyer@gmail.com |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Choice Behavior* Conditioning (Psychology)* Female Humans Male Reinforcement Schedule* Reward Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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R01 MH057127-13/MH/NIMH NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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