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dc.contributor.authorBron, Angela
dc.contributor.authorSumpter, Catherine E.
dc.contributor.authorFoster, T. Mary
dc.contributor.authorTemple, William
dc.coverage.spatialUnited Statesen_NZ
dc.date.accessioned2010-02-01T22:53:08Z
dc.date.available2010-02-01T22:53:08Z
dc.date.issued2003
dc.identifier.citationBron, A., Sumpter, C. E., Foster, M. & Temple, W. (2003). Contingency discriminability, matching, and bias in the concurrent-schedule responding of possums (Trichosurus vulpecula). Journal of the Experimental Analysis of Behaviour, 79(3), 289-306.en
dc.identifier.urihttps://hdl.handle.net/10289/3538
dc.description.abstractSix possums (Trichosurus vulpecula) responded under dependent concurrent variable-interval variable- interval schedules of reinforcement. Over 15 conditions, barley–carob was one reinforcer with the other reinforcer consisting of Coco Popst, coconut, or a barley–carob mixture with 0%, 2%, 4%, or 6% salt added to the barley. The schedules were both variable-interval 40 s. As has been found with other species, behavior on the concurrent schedules was biased by the type of feed, with the 6% salt and the coconut giving the greatest biases towards the barley–carob mixture. The schedules were varied over 17 conditions using the barley–carob mixture alone or the barley–carob mixture versus the mixture with 4% or 6% salt. Both the contingency-discriminability model (Davison & Jenkins, 1985) and the generalized matching law described the data from the three sets of conditions equally well. Both gave similar measures of bias; however, some of the parameter values found with the contingency discriminability model were uninterpretable. Thus, any argument for this model based on the interpretability of the parameter values becomes weak. It is worth retaining the generalized matching law as a descriptor of such data.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherSociety for the Experimental Analysis of Behavioren_NZ
dc.rightsThis article has been published in the journal: Journal of the Experimental Analysis of Behaviour. Used with permission.en
dc.subjectconcurrent schedulesen
dc.subjectcontingency discriminabilityen
dc.subjectmatchingen
dc.subjectfood preferenceen
dc.subjectbiasen
dc.subjectlever pressen
dc.subjectpossumen
dc.titleContingency discriminability, matching, and bias in the concurrent-schedule responding of possums (Trichosurus vulpecula)en
dc.typeJournal Articleen
dc.identifier.doiDOI: 10.1901/jeab.2003.79-289
dc.relation.isPartOfJournal of the Experimental Analysis of Behaviouren_NZ
pubs.begin-page289en_NZ
pubs.elements-id29008
pubs.end-page306en_NZ
pubs.issue3en_NZ
pubs.volume79en_NZ


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