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dc.contributor.advisorMcEwan, James S.A.
dc.contributor.advisorBizo, Lewis A.
dc.contributor.authorBudenberg, Grace Joy
dc.date.accessioned2014-12-15T23:57:32Z
dc.date.available2014-12-15T23:57:32Z
dc.date.issued2014
dc.identifier.citationBudenberg, G. J. (2014). A Magnitude Effect in Temporal discounting with Hens (Thesis, Master of Applied Psychology (MAppPsy)). University of Waikato, Hamilton, New Zealand. Retrieved from https://hdl.handle.net/10289/8976en
dc.identifier.urihttps://hdl.handle.net/10289/8976
dc.description.abstractThis study aimed to determine whether a magnitude effect could be obtained in temporal discounting with brown shaver hens. Subjects responded in a classic self-control situation for the choice between a smaller-sooner reward (1-s access to food, after a 2 s delay) or a larger-later reward (4.5-s access to food, after a 28 s delay). Hens responded in a multiple concurrent-chain procedure on concurrent variable-interval (VI-30s, VI 30-s) schedules in the choice phase (initial links), and a fixed interval (FI) schedule, ranging from FI 2-s to FI 28-s in the outcome phase (terminal links). The outcome phase then resulted in reinforcement of either 1-s access to grain or 4.5-s access to grain. The results replicated the findings of a previous study by Grace, Sargisson & White (2012), who obtained evidence of a magnitude effect in temporal discounting with pigeons, in which subjects demonstrated a greater preference for the larger reward compared to the small reward over increasing time delay. The findings indicate that the magnitude effect is not unique to humans, as previous studies have suggested. Data was applied the Generalized Matching Law (GML) and the Contextual Choice Model (CCM) equations to determine if the data was comparable with models of behavioural choice.
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dc.format.mimetypeapplication/zip
dc.language.isoen
dc.publisherUniversity of Waikato
dc.rightsAll items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectMagnitude effect
dc.subjectSelf-control
dc.subjectHens
dc.titleA Magnitude Effect in Temporal discounting with Hens
dc.typeThesis
thesis.degree.grantorUniversity of Waikato
thesis.degree.levelMasters
thesis.degree.nameMaster of Applied Psychology (MAppPsy)
dc.date.updated2014-03-12T01:46:19Z
pubs.place-of-publicationHamilton, New Zealanden_NZ


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