Cargando…

Incongruence in number–luminance congruency effects

Congruency tasks have provided support for an amodal magnitude system for magnitudes that have a “spatial” character, but conflicting results have been obtained for magnitudes that do not (e.g., luminance). In this study, we extricated the factors that underlie these number–luminance congruency effe...

Descripción completa

Detalles Bibliográficos
Autores principales: Gebuis, Titia, van der Smagt, Maarten J.
Formato: Texto
Lenguaje:English
Publicado: Springer-Verlag 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3025115/
https://www.ncbi.nlm.nih.gov/pubmed/21258924
http://dx.doi.org/10.3758/s13414-010-0002-9
_version_ 1782196873616949248
author Gebuis, Titia
van der Smagt, Maarten J.
author_facet Gebuis, Titia
van der Smagt, Maarten J.
author_sort Gebuis, Titia
collection PubMed
description Congruency tasks have provided support for an amodal magnitude system for magnitudes that have a “spatial” character, but conflicting results have been obtained for magnitudes that do not (e.g., luminance). In this study, we extricated the factors that underlie these number–luminance congruency effects and tested alternative explanations: (unsigned) luminance contrast and saliency. When luminance had to be compared under specific task conditions, we revealed, for the first time, a true influence of number on luminance judgments: Darker stimuli were consistently associated with numerically larger stimuli. However, when number had to be compared, luminance contrast, not luminance, influenced number judgments. Apparently, associations exist between number and luminance, as well as luminance contrast, of which the latter is probably stronger. Therefore, similar tasks, comprising exactly the same stimuli, can lead to distinct interference effects. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.3758/s13414-010-0002-9) contains supplementary material, which is available to authorized users.
format Text
id pubmed-3025115
institution National Center for Biotechnology Information
language English
publishDate 2010
publisher Springer-Verlag
record_format MEDLINE/PubMed
spelling pubmed-30251152011-02-22 Incongruence in number–luminance congruency effects Gebuis, Titia van der Smagt, Maarten J. Atten Percept Psychophys Article Congruency tasks have provided support for an amodal magnitude system for magnitudes that have a “spatial” character, but conflicting results have been obtained for magnitudes that do not (e.g., luminance). In this study, we extricated the factors that underlie these number–luminance congruency effects and tested alternative explanations: (unsigned) luminance contrast and saliency. When luminance had to be compared under specific task conditions, we revealed, for the first time, a true influence of number on luminance judgments: Darker stimuli were consistently associated with numerically larger stimuli. However, when number had to be compared, luminance contrast, not luminance, influenced number judgments. Apparently, associations exist between number and luminance, as well as luminance contrast, of which the latter is probably stronger. Therefore, similar tasks, comprising exactly the same stimuli, can lead to distinct interference effects. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.3758/s13414-010-0002-9) contains supplementary material, which is available to authorized users. Springer-Verlag 2010-11-10 2011 /pmc/articles/PMC3025115/ /pubmed/21258924 http://dx.doi.org/10.3758/s13414-010-0002-9 Text en © The Author(s) 2010 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Article
Gebuis, Titia
van der Smagt, Maarten J.
Incongruence in number–luminance congruency effects
title Incongruence in number–luminance congruency effects
title_full Incongruence in number–luminance congruency effects
title_fullStr Incongruence in number–luminance congruency effects
title_full_unstemmed Incongruence in number–luminance congruency effects
title_short Incongruence in number–luminance congruency effects
title_sort incongruence in number–luminance congruency effects
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3025115/
https://www.ncbi.nlm.nih.gov/pubmed/21258924
http://dx.doi.org/10.3758/s13414-010-0002-9
work_keys_str_mv AT gebuistitia incongruenceinnumberluminancecongruencyeffects
AT vandersmagtmaartenj incongruenceinnumberluminancecongruencyeffects