{"pk":26537,"title":"Inferring Individual Differences Between and Within Exemplar andDecision-Bound Models of Categorization","subtitle":null,"abstract":"Different models of categorization are often treated as compet-ing accounts, but specific models are often used to understandindividual differences, by estimating individual-level param-eters. We develop an approach to understanding categoriza-tion that allows for individual differences both between andwithin models, using two prominent categorization models thatmake different theoretical assumptions: the Generalized Con-text Model (GCM) and General Recognition Theory (GRT).We develop a latent-mixture model for inferring whether anindividual uses the GCM or GRT, while simultaneously allow-ing for the use of special-case simpler strategies. The GCMsimple strategies involve attending to a single stimulus dimen-sion, while the GRT simple strategies involve using unidimen-sional decision bounds. Our model also allows for simple con-taminant strategies. We apply the model to four previouslypublished categorization experiments, finding large and inter-pretable individual differences in the use of both models andspecific strategies, depending on the nature of the stimuli andcategory structures.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"category learning; exemplar models; decisionbound models; General Recognition Theory; GeneralizedContext Model; Bayesian inference"},{"word":"latent-mixture model"}],"section":"Papers","is_remote":true,"remote_url":"https://escholarship.org/uc/item/1fg2r2tq","frozenauthors":[{"first_name":"Irina","middle_name":"","last_name":"Danileiko","name_suffix":"","institution":"University of California, Irvine","department":""},{"first_name":"Michael","middle_name":"D.","last_name":"Lee","name_suffix":"","institution":"University of California, Irvine","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2016-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/26537/galley/16173/download/"}]}