Document Detail

Effects of Stroop interference on categorical perception in simultaneous color discrimination.
MedLine Citation:
PMID:  20681338     Owner:  NLM     Status:  MEDLINE    
Two experiments were conducted to assess the effects of verbal interference on categorical perception. The task involved simultaneous color discrimination with no memory demands, and a concurrent Stroop task was employed as verbal interference. Exp. 1 demonstrated that categorical perception was eliminated by an incongruent color word (i.e., Stroop interference), but not by a congruent color word or nonword fixation crosses. Exp. 2 demonstrated that categorical perception decreased when the intensity of Stroop Interference was increased, and it increased when correct verbal coding was enhanced. These results provide further evidence that interfering with verbal coding disrupts categorical perception, suggesting that verbal coding has a crucial role in categorical "perception." It is also suggested that categorical perception could occur at the encoding or decision level but not at the storage or memory level. The possible mechanisms for categorical perception are also discussed.
Takashi Suegami; Chikashi Michimata
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perceptual and motor skills     Volume:  110     ISSN:  0031-5125     ISO Abbreviation:  Percept Mot Skills     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-08-04     Completed Date:  2010-09-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401131     Medline TA:  Percept Mot Skills     Country:  United States    
Other Details:
Languages:  eng     Pagination:  857-78     Citation Subset:  IM    
Sophia University, Japan.
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MeSH Terms
Color Perception*
Decision Making*
Memory, Short-Term
Reaction Time
Stroop Test*
Young Adult

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