Classification response times in probabilistic rule-based category structures: Contrasting exemplar-retrieval and decision-boundary models.
Experiments were conducted to contrast the predictions from exemplar models and rule-based decision-boundary models of perceptual classification. Observers classified multidimensional stimuli into categories that could be described in terms of easily verbalized logical rules. The critical manipulati...
| Publicado en: | Memory & Cognition Vol. 38; no. 7; pp. 916 - 928 |
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| Autores principales: | , |
| Formato: | Artículo |
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Springer Nature
Oct2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=55135381&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 55135381 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 0090502X MEG jtl: Memory & Cognition issn: 0090502X maglogo: N pubinfo: dt: Oct2010 vid: 38 iid: 7 pid: 237 pub: Springer Nature artinfo: ui: 55135381 10.3758/MC.38.7.916 ppf: 916 ppct: 12 formats: fmt: @attributes: type: P size: 233KB tig: atl: Classification response times in probabilistic rule-based category structures: Contrasting exemplar-retrieval and decision-boundary models. aug: au: NOSOFSKY, ROBERT M. LITTLE, DANIEL R. affil: Indiana University, Bloomington, Indiana su: Analysis of variance Cognition Decision making Forecasting Probability theory Mathematical models of psychology Reaction time Research funding sug: subj: Analysis of variance Cognition Decision making Forecasting Probability theory Mathematical models of psychology Reaction time Research funding ab: Experiments were conducted to contrast the predictions from exemplar models and rule-based decision-boundary models of perceptual classification. Observers classified multidimensional stimuli into categories that could be described in terms of easily verbalized logical rules. The critical manipulation was that some pairs of stimuli received probabilistic feedback, whereas other control pairs received deterministic feedback. Despite the probabilistic feedback, the probabilistic pairs and the deterministic pairs were the same distance from ideal-observer, rule-based decision boundaries. Across two experiments with varying category structures, observers classified the probabilistic pairs with slower response times (RTs) and lower accuracies than the comparison deterministic pairs. The effects were relatively long term, extending into test blocks in which all feedback was withheld. The results were as predicted by exemplar models, but challenged models that posit that RT is a function solely of the distance of a stimulus from rule-based boundaries. The studies add considerable generality to previous ones and suggest that, even in domains involving rule-based category structures, exemplar-retrieval processes play a significant role. Supplemental materials related to this article may be downloaded from http://mc.psychonomic-journals.org/content/supplemental. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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