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dc.contributor.authorBiscione, V
dc.contributor.authorHarris, CM
dc.date.accessioned2016-06-02T11:44:05Z
dc.date.available2016-06-02T11:44:05Z
dc.date.issued2015
dc.identifier.issn1662-5153
dc.identifier.issn1662-5153
dc.identifier.otherARTN 288
dc.identifier.urihttp://hdl.handle.net/10026.1/4788
dc.description.abstract

In the decision-making field, it is important to distinguish between the perceptual process (how information is collected) and the decision rule (the strategy governing decision-making). We propose a new paradigm, called EXogenous ACcumulation Task (EXACT) to disentangle these two components. The paradigm consists of showing a horizontal gauge that represents the probability of receiving a reward at time t and increases with time. The participant is asked to press a button when they want to request a reward. Thus, the perceptual mechanism is hard-coded and does not need to be inferred from the data. Based on this paradigm, we compared four decision rules (Bayes Risk, Reward Rate, Reward/Accuracy, and Modified Reward Rate) and found that participants appeared to behave according to the Modified Reward Rate. We propose a new way of analysing the data by using the accuracy of responses, which can only be inferred in classic RT tasks. Our analysis suggests that several experimental findings such as RT distribution and its relationship with experimental conditions, usually deemed to be the result of a rise-to-threshold process, may be simply explained by the effect of the decision rule employed.

dc.format.extent288-
dc.format.mediumElectronic-eCollection
dc.languageeng
dc.language.isoeng
dc.publisherFrontiers Media SA
dc.subjectoptimal performance
dc.subjectreward rate
dc.subjectspeed-accuracy trade-off
dc.subjectperceptual choice
dc.subjectdecision rules
dc.titleInvestigating decision rules with a new experimental design: the EXACT paradigm
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/26578916
plymouth.issueNOVEMBER
plymouth.volume9
plymouth.publisher-urlhttp://dx.doi.org/10.3389/fnbeh.2015.00288
plymouth.publication-statusPublished online
plymouth.journalFrontiers in Behavioral Neuroscience
dc.identifier.doi10.3389/fnbeh.2015.00288
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Health
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Centre for Brain, Cognition and Behaviour (CBCB)
plymouth.organisational-group/Plymouth/Research Groups/Centre for Brain, Cognition and Behaviour (CBCB)/Brain
plymouth.organisational-group/Plymouth/Users by role
dc.publisher.placeSwitzerland
dcterms.dateAccepted2015-10-12
dc.identifier.eissn1662-5153
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.3389/fnbeh.2015.00288
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2015
rioxxterms.typeJournal Article/Review
plymouth.oa-locationhttp://journal.frontiersin.org/article/10.3389/fnhum.2014.00418/full


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