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The effect of memory and context changes on color matches to real objects

Allred, S.R.; Olkkonen, M.

The effect of memory and context changes on color matches to real objects Thumbnail


Authors

S.R. Allred

M. Olkkonen



Abstract

Real-world color identification tasks often require matching the color of objects between contexts and after a temporal delay, thus placing demands on both perceptual and memory processes. Although the mechanisms of matching colors between different contexts have been widely studied under the rubric of color constancy, little research has investigated the role of long-term memory in such tasks or how memory interacts with color constancy. To investigate this relationship, observers made color matches to real study objects that spanned color space, and we independently manipulated the illumination impinging on the objects, the surfaces in which objects were embedded, and the delay between seeing the study object and selecting its color match. Adding a 10-min delay increased both the bias and variability of color matches compared to a baseline condition. These memory errors were well accounted for by modeling memory as a noisy but unbiased version of perception constrained by the matching methods. Surprisingly, we did not observe significant increases in errors when illumination and surround changes were added to the 10-minute delay, although the context changes alone did elicit significant errors.

Citation

Allred, S., & Olkkonen, M. (2015). The effect of memory and context changes on color matches to real objects. Attention, Perception, and Psychophysics, 77(5), 1608-1624. https://doi.org/10.3758/s13414-014-0810-4

Journal Article Type Article
Acceptance Date Sep 1, 2015
Online Publication Date Mar 31, 2015
Publication Date Jul 1, 2015
Deposit Date Nov 6, 2015
Publicly Available Date Mar 28, 2024
Journal Attention, Perception, and Psychophysics
Print ISSN 1943-3921
Electronic ISSN 1943-393X
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 77
Issue 5
Pages 1608-1624
DOI https://doi.org/10.3758/s13414-014-0810-4

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.





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