creators_name: Goldstone, Robert Lee
type: journalp
datestamp: 2000-08-01
lastmod: 2011-03-11 08:54:22
metadata_visibility: show
title: Unitization during Category Learning
ispublished: pub
subjects: cog-psy
full_text_status: public
keywords: category learning categorization unitization perception perceptual learning expertise
abstract: Five experiments explored the question of whether new perceptual units can be developed if they are diagnostic for a category learning task, and if so, what are the constraints on this unitization process?  During category learning, participants were required to attend either a single component or a conjunction of five components in order to correctly categorize an object. In Experiments 1-4, some evidence for unitization was found in that the conjunctive task becomes much easier with practice, and this improvement was not found for the single component task, or for conjunctive tasks where the components cannot be unitized. Influences of component order (Experiment 1), component contiguity (Experiment 2), component proximity (Experiment 3), and number of components (Experiment 4) on practice effects were found. Using a Fourier Transformation method for deconvolving response times (Experiment 5), prolonged practice effects yielded responses that were faster than expected by analytic model that integrate evidence from independently perceived components. 
date: 2000
date_type: published
publication: Journal of Experimental Psychology: Human Perception and Performance
volume: 26
pagerange: 86-112
refereed: TRUE
citation:   Goldstone, Robert Lee  (2000) Unitization during Category Learning.  [Journal (Paginated)]     
document_url: http://cogprints.org/909/3/doodlesold.pdf