The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention

Most people are good at estimating summary statistics for different features of groups of objects. For instance, people can selectively attend to different features of a group of lines and report ensemble properties such as the mean length or mean orientation and there are reliable individual differ...

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Main Authors: Melanie Kacin, Oakyoon Cha, Isabel Gauthier
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Vision
Subjects:
Online Access:https://www.mdpi.com/2411-5150/7/1/3
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author Melanie Kacin
Oakyoon Cha
Isabel Gauthier
author_facet Melanie Kacin
Oakyoon Cha
Isabel Gauthier
author_sort Melanie Kacin
collection DOAJ
description Most people are good at estimating summary statistics for different features of groups of objects. For instance, people can selectively attend to different features of a group of lines and report ensemble properties such as the mean length or mean orientation and there are reliable individual differences in such ensemble judgment abilities. Our recent study found decisive evidence in support of a correlation between the errors on mean length and mean orientation judgments (<i>r</i> = 0.62). The present study investigates one possible mechanism for this correlation. The ability to allocate spatial attention to single items varies across individuals, and in the recent study, this variability could have contributed to both judgments because the location of lines was unpredictable. Here, we replicate this prior work with arrays of lines with fully predictable spatial locations, to lower the contribution of the ability to distribute attention effectively over all items in a display. We observed a strong positive correlation between errors on the length and orientation averaging tasks (<i>r</i> = 0.65). This provides evidence against individual differences in spatial attention as a common mechanism supporting mean length and orientation judgments. The present result aligns with the growing evidence for at least one ensemble-specific ability that applies across different kinds of features and stimuli.
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spelling doaj.art-107815d20faa4862b33fbee2e49071682023-11-17T14:24:44ZengMDPI AGVision2411-51502022-12-0171310.3390/vision7010003The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial AttentionMelanie Kacin0Oakyoon Cha1Isabel Gauthier2Department of Psychology, Vanderbilt University, Nashville, TN 37240, USADepartment of Psychology, Vanderbilt University, Nashville, TN 37240, USADepartment of Psychology, Vanderbilt University, Nashville, TN 37240, USAMost people are good at estimating summary statistics for different features of groups of objects. For instance, people can selectively attend to different features of a group of lines and report ensemble properties such as the mean length or mean orientation and there are reliable individual differences in such ensemble judgment abilities. Our recent study found decisive evidence in support of a correlation between the errors on mean length and mean orientation judgments (<i>r</i> = 0.62). The present study investigates one possible mechanism for this correlation. The ability to allocate spatial attention to single items varies across individuals, and in the recent study, this variability could have contributed to both judgments because the location of lines was unpredictable. Here, we replicate this prior work with arrays of lines with fully predictable spatial locations, to lower the contribution of the ability to distribute attention effectively over all items in a display. We observed a strong positive correlation between errors on the length and orientation averaging tasks (<i>r</i> = 0.65). This provides evidence against individual differences in spatial attention as a common mechanism supporting mean length and orientation judgments. The present result aligns with the growing evidence for at least one ensemble-specific ability that applies across different kinds of features and stimuli.https://www.mdpi.com/2411-5150/7/1/3ensemble perceptionmean lengthmean orientationindividual differencesspatial attention
spellingShingle Melanie Kacin
Oakyoon Cha
Isabel Gauthier
The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention
Vision
ensemble perception
mean length
mean orientation
individual differences
spatial attention
title The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention
title_full The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention
title_fullStr The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention
title_full_unstemmed The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention
title_short The Relation between Ensemble Coding of Length and Orientation Does Not Depend on Spatial Attention
title_sort relation between ensemble coding of length and orientation does not depend on spatial attention
topic ensemble perception
mean length
mean orientation
individual differences
spatial attention
url https://www.mdpi.com/2411-5150/7/1/3
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AT melaniekacin relationbetweenensemblecodingoflengthandorientationdoesnotdependonspatialattention
AT oakyooncha relationbetweenensemblecodingoflengthandorientationdoesnotdependonspatialattention
AT isabelgauthier relationbetweenensemblecodingoflengthandorientationdoesnotdependonspatialattention