Document Detail

Research note: a multidimensional scaling comparison of color metrics for response times and rated dissimilarities.
MedLine Citation:
PMID:  10598478     Owner:  NLM     Status:  MEDLINE    
Individual-differences multidimensional scaling was applied to a set of proximity data for equiluminant lights (Paramei & Cavonius, 1999) to explore any differences between two data collection procedures (rated dissimilarities, and same/different response times [RTs]), as well as between color-normal and abnormal observers. Two conclusions emerged: (1) The pattern of similarities from observers with anomalous color vision can be understood in terms of a compressed color plane (the weighted Euclidean model of individual differences); and (2) there is evidence that the color "plane" is either curved or governed by a non-Euclidean distance function. When color-normal observers are examined in the weighted-Euclidean framework, minor differences emerge between RT and rating data. But the main distinguishing feature of RT data is a pattern of decreasing accuracy for larger color distances. This must be taken into account, since it can itself induce curvature.
D Bimler
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Perception & psychophysics     Volume:  61     ISSN:  0031-5117     ISO Abbreviation:  Percept Psychophys     Publication Date:  1999 Nov 
Date Detail:
Created Date:  2000-02-02     Completed Date:  2000-02-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0200445     Medline TA:  Percept Psychophys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1675-80     Citation Subset:  IM    
Department of Educational Studies and Community Support, Massey University, Palmerston North, New Zealand.
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MeSH Terms
Color Perception*
Color Perception Tests
Color Vision Defects / diagnosis,  psychology
Depth Perception
Discrimination Learning*
Reaction Time*

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