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dc.contributor.authorGrant, Amber A.
dc.contributor.authorFoster, T. Mary
dc.contributor.authorTemple, William
dc.contributor.authorJackson, Surrey
dc.contributor.authorKinloch, Jennifer
dc.contributor.authorPoling, Alan
dc.coverage.spatialNetherlandsen_NZ
dc.date.accessioned2014-01-13T20:50:13Z
dc.date.available2014-01-13T20:50:13Z
dc.date.copyright2014-01
dc.date.issued2014
dc.identifier.citationGrant, A. A., Foster, T. M., Temple, W., Jackson, S., Kinloch, J., & Poling, A. (2014). Reinforcer magnitude and demand under fixed-ratio schedules with domestic hens. Behavioural Processes, published online on 3 January 2014.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8387
dc.description.abstractThis study compared three methods of normalizing demand functions to allow comparison of demand for different commodities and examined how varying reinforcer magnitudes affected these analyses. Hens responded under fixed-ratio schedules in 40-min sessions with response requirement doubling each session and with 2-s, 8-s, and 12-s access to wheat. Over the smaller fixed ratios overall response rates generally increased and were higher the shorter the magazine duration. The logarithms of the number of reinforcers obtained (consumption) and the fixed ratio (price) were well fitted by curvilinear demand functions (Hursh et al., 1988. Journal of the Experimental Analysis of Behavior 50, 419–440) that were inelastic (b negative) over small fixed-ratios. The fixed ratio with maximal response rate (Pmax) increased, and the rate of change of elasticity (a) and initial consumption (L) decreased with increased magazine duration. Normalizing consumption using measures of preference for various magazine durations (3-s vs. 3-s, 2-s vs. 8-s, and 2-s vs. 12-s), obtained using concurrent schedules, gave useful results as it removed the differences in L. Normalizing consumption and price (Hursh and Winger, 1995. Journal of the Experimental Analysis of Behavior 64, 373–384) unified the data functions as intended by that analysis. The exponential function (Hursh and Silberberg, 2008. Psychological Review, 115, 186–198) gave an essential value that increased (i.e., α decreased significantly) as magazine duration decreased. This was not as predicted, since α should be constant over variations in magazine duration, but is similar to previous findings using a similar procedure with different food qualities (hens) and food quantities (rats).en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherElsevier
dc.relation.ispartofBehavioural Processes
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S037663571300260Xen_NZ
dc.rightsThis is the authors' accepted version of an article published in the journal: Behavioural Processes. © 2014 Elsevier B.V.
dc.subjectfixed-ratio schedulesen_NZ
dc.subjectreinforcer quantityen_NZ
dc.subjectconcurrent schedulesen_NZ
dc.subjectbehavioral economicsen_NZ
dc.subjectdemand functionsen_NZ
dc.subjectnormalizationen_NZ
dc.subjectmagnitude-of-reinforceren_NZ
dc.subjectkey pecken_NZ
dc.subjectdomestic hensen_NZ
dc.titleReinforcer magnitude and demand under fixed-ratio schedules with domestic hensen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1016/j.beproc.2013.12.013en_NZ
dc.relation.isPartOfBehavioural Processesen_NZ
pubs.begin-page199en_NZ
pubs.elements-id39205
pubs.end-page210en_NZ
pubs.volume103en_NZ
uow.identifier.article-noCen_NZ


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