Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/21062
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dc.contributor.authorFoster, T Maryen
dc.contributor.authorJackson, Surreyen
dc.contributor.authorBizo, Lewisen
dc.contributor.authorMcEwan, Jamesen
dc.contributor.authorStuart, Staceyen
dc.date.accessioned2017-05-24T11:55:00Z-
dc.date.issued2013-
dc.identifier.citationNew Zealand Association for Behaviour Analysis 10th Annual Conference Programme, p. 16-16en
dc.identifier.urihttps://hdl.handle.net/1959.11/21062-
dc.description.abstractHursh and Silberberg (2008) proposed an exponential function to describe the curvilinear demand functions obtained in much animal research. An advantage of this was that it gave a single measure of the value of the reinforcer, alpha, which they called essential value. This measure has scalar invariance and should not be affected by dose size, amount, or duration of the reinforcer. This paper examines the essential value measure obtained from studies with hens. In each study fixed-ratio schedules were used to generate demand functions. The properties of the reinforcer differed both within and across studies. Foster et al. (2009) and Lim (2010) varied food quality using 40-min sessions. Both found that the essential value was larger for the less preferred reinforcer when consumption was measured by number of reinforcers. Jackson (2011), using sessions terminated after 40 reinforcers and with body weight strictly controlled, found essential value (based on reinforcer rate) was the same for these same two foods. Lim (2010) found the preferred food had the greater essential value when the consumption was measured as weight of food consumed. Grant's (2005) data showed longer reinforcer durations were associated with lower essential values when consumption was measured as numbers of reinforcers. For these data the weight of food consumed generally resulted in the longest durations having the highest essential value. Harris (2011) varied delay to the reinforcer and found longer delays normally gave lower essential values. Stuart (2013) compared delays to the reinforcer and inter-trial-intervals (ITIs). She found essential was lower with the longer intervals for all hens with ITI and, for some hens, with delay and was lower with delays than with ITIs. Thus the measure of essential value has been found to vary in circumstances where this would not be predicted, to be the reverse of what might be expected in some cases, and to be affected by the procedure used. The present data show that essential value does not provide an easily interpretable measure.en
dc.languageenen
dc.publisherNew Zealand Association for Behaviour Analysis (NZABA)en
dc.relation.ispartofNew Zealand Association for Behaviour Analysis 10th Annual Conference Programmeen
dc.titleA comparison of the effects of delay to reinforcement, amount of reinforcer and quality of reinforcer on essential value of demand with hensen
dc.typeConference Publicationen
dc.relation.conferenceNZABA 2013 Conference: 10th Annual Conference of the New Zealand Association for Behaviour Analysisen
dc.subject.keywordsCognitive Sciencesen
dc.subject.keywordsPsychologyen
dc.subject.keywordsSensory Processes, Perception and Performanceen
local.contributor.firstnameT Maryen
local.contributor.firstnameSurreyen
local.contributor.firstnameLewisen
local.contributor.firstnameJamesen
local.contributor.firstnameStaceyen
local.subject.for2008170112 Sensory Processes, Perception and Performanceen
local.subject.for2008170199 Psychology not elsewhere classifieden
local.subject.for2008170299 Cognitive Sciences not elsewhere classifieden
local.subject.seo2008970117 Expanding Knowledge in Psychology and Cognitive Sciencesen
local.subject.seo2008970107 Expanding Knowledge in the Agricultural and Veterinary Sciencesen
local.profile.schoolSchool of Psychologyen
local.profile.emaillbizo@une.edu.auen
local.output.categoryE3en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20170331-125818en
local.date.conference30th August - 1st September, 2013en
local.conference.placeAuckland, New Zealanden
local.publisher.placeAuckland, New Zealanden
local.format.startpage16en
local.format.endpage16en
local.contributor.lastnameFosteren
local.contributor.lastnameJacksonen
local.contributor.lastnameBizoen
local.contributor.lastnameMcEwanen
local.contributor.lastnameStuarten
dc.identifier.staffune-id:lbizoen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:21255en
dc.identifier.academiclevelAcademicen
local.title.maintitleA comparison of the effects of delay to reinforcement, amount of reinforcer and quality of reinforcer on essential value of demand with hensen
local.output.categorydescriptionE3 Extract of Scholarly Conference Publicationen
local.relation.urlhttps://nzaba.files.wordpress.com/2013/08/nzaba_programme_20133.pdfen
local.conference.detailsNZABA 2013 Conference: 10th Annual Conference of the New Zealand Association for Behaviour Analysis, Auckland, New Zealand, 30th August - 1st September, 2013en
local.search.authorFoster, T Maryen
local.search.authorJackson, Surreyen
local.search.authorBizo, Lewisen
local.search.authorMcEwan, Jamesen
local.search.authorStuart, Staceyen
local.uneassociationUnknownen
local.year.published2013-
local.subject.for2020520401 Cognitionen
local.subject.for2020520199 Applied and developmental psychology not elsewhere classifieden
local.subject.seo2020280121 Expanding knowledge in psychologyen
local.subject.seo2020280101 Expanding knowledge in the agricultural, food and veterinary sciencesen
local.date.start2013-08-30-
local.date.end2013-09-01-
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