The time course of explicit and implicit categorization

TitleThe time course of explicit and implicit categorization
Publication TypeJournal Article
Year of Publication2015
AuthorsJ Smith, D., Zakrzewski A. C., Herberger E. R., Boomer J., Roeder J. L., F Ashby G., & Church B. A.
JournalAttention, Perception, & Psychophysics
Date Published2015 Oct
KeywordsAdult, Concept Formation, Humans, Learning, Reaction Time, Young Adult

Contemporary theory in cognitive neuroscience distinguishes, among the processes and utilities that serve categorization, explicit and implicit systems of category learning that learn, respectively, category rules by active hypothesis testing or adaptive behaviors by association and reinforcement. Little is known about the time course of categorization within these systems. Accordingly, the present experiments contrasted tasks that fostered explicit categorization (because they had a one-dimensional, rule-based solution) or implicit categorization (because they had a two-dimensional, information-integration solution). In Experiment 1, participants learned categories under unspeeded or speeded conditions. In Experiment 2, they applied previously trained category knowledge under unspeeded or speeded conditions. Speeded conditions selectively impaired implicit category learning and implicit mature categorization. These results illuminate the processing dynamics of explicit/implicit categorization.

Alternate JournalAtten Percept Psychophys
PubMed ID26025556
PubMed Central IDPMC4607559
Grant ListP01 HD060563 / HD / NICHD NIH HHS / United States
P01 NS044393 / NS / NINDS NIH HHS / United States
HD-060563 / HD / NICHD NIH HHS / United States