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dc.contributor.authorSpicer, Stuart
dc.contributor.authorWills, Andy
dc.contributor.authorJones, Peter
dc.contributor.authorMitchell, CJ
dc.contributor.authorDome, L
dc.date.accessioned2021-07-26T12:52:30Z
dc.date.available2021-07-26T12:52:30Z
dc.date.issued2021-03-17
dc.identifier.urihttp://hdl.handle.net/10026.1/17374
dc.description.abstract

<jats:p>It is generally assumed that the Rescorla and Wagner (1972) model adequately accommodates the full results of simple cue competition experiments in humans (e.g. Dickinson et al., 1984), while the Bush and Mosteller (1951) model cannot. We present simulations that demonstrate this assumption is wrong in at least some circumstances. The Rescorla-Wagner model, as usually applied, fits the full results of a simple forward cue-competition experiment no better than the Bush-Mosteller model. Additionally, we present a novel finding, where letting the associative strength of all cues start at an intermediate value (rather than zero), allows this modified model to provide a better account of the experimental data than the (equivalently modified) Bush-Mosteller model. This modification also allows the Rescorla-Wagner model to account for a redundancy effect experiment (Uengoer et al., 2013); something that the unmodified model is not able to do. Furthermore, the modified Rescorla-Wagner model can accommodate the effect of varying the proportion of trials on which the outcome occurs (i.e. the base rate) on the redundancy effect (Jones et al., 2019). Interestingly, the initial associative strength of cues varies in line with the outcome base rate. We propose that this modification provides a simple way of mathematically representing uncertainty about the causal status of novel cues within the confines of the Rescorla-Wagner model. The theoretical implications of this modification are discussed. We also briefly introduce free and open resources to support formal modelling in associative learning. Keywords: associative learning, prediction error, uncertainty, modelling, blocking, redundancy effect, open science.</jats:p>

dc.format.extent14-21
dc.language.isoen
dc.publisherNurture Science Publishing Group
dc.titleRepresenting uncertainty in the Rescorla-Wagner model: Blocking, the redundancy effect, and outcome base rate
dc.typejournal-article
plymouth.volume1
plymouth.publisher-urlhttps://www.ojepn.com/index.php/browse-journal
plymouth.publication-statusPublished
plymouth.journalOpen Journal of Experimental Psychology and Neuroscience
dc.identifier.doi10.46221/ojepn.2021.6623
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Admin Group - REF
plymouth.organisational-group/Plymouth/Admin Group - REF/REF Admin Group - FoH
plymouth.organisational-group/Plymouth/Faculty of Health
plymouth.organisational-group/Plymouth/Faculty of Health/Peninsula Medical School
plymouth.organisational-group/Plymouth/Faculty of Health/School of Psychology
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA04 Psychology, Psychiatry and Neuroscience
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Institute of Health and Community
plymouth.organisational-group/Plymouth/Research Groups/Plymouth Institute of Health and Care Research (PIHR)
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dcterms.dateAccepted2021-02-15
dc.rights.embargodate2021-8-5
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.46221/ojepn.2021.6623
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2021-03-17
rioxxterms.typeJournal Article/Review


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