Age-related changes in crowding and reading speed

Abstract Crowding, the inability to recognize objects in clutter, is known to play a role in developmental changes in reading speed. Here, we investigated whether crowding also plays a role in age-related changes in reading speed. We recruited 18 young (mean age: 22.6 ± 3.5; range: 18~31) and 21 old...

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Autores principales:	Rong Liu, Bhavika N. Patel, MiYoung Kwon
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ba184161c9f3408485347757e338db9e
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spelling	oai:doaj.org-article:ba184161c9f3408485347757e338db9e2021-12-02T16:07:02ZAge-related changes in crowding and reading speed10.1038/s41598-017-08652-02045-2322https://doaj.org/article/ba184161c9f3408485347757e338db9e2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08652-0https://doaj.org/toc/2045-2322Abstract Crowding, the inability to recognize objects in clutter, is known to play a role in developmental changes in reading speed. Here, we investigated whether crowding also plays a role in age-related changes in reading speed. We recruited 18 young (mean age: 22.6 ± 3.5; range: 18~31) and 21 older adults (mean age: 58.2 ± 7.0; range: 50~73) with normal vision. Reading speed was measured with short blocks of text. The degree of crowding was determined by measuring crowding zone (the distance between a target and flankers required to yield a criterion recognition accuracy) and the size of the visual span (an uncrowded window in the visual field within which letters can be recognizable reliably). Measurements were made across the central 16-degree visual field using letter-recognition tasks. Our results showed that, compared to young adults, older adults exhibited significantly slower reading speed (a decrease by 30%) and larger crowding: an enlargement of crowding zone (an increase by 31%) and shrinkage of the visual span (a decrease by 6.25 bits). We also observed significant correlations between reading speed and each of the crowding measures. Our results suggest that crowding increases with age. Age-related changes in crowding may in part explain slower reading in older adults.Rong LiuBhavika N. PatelMiYoung KwonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rong Liu Bhavika N. Patel MiYoung Kwon Age-related changes in crowding and reading speed
description	Abstract Crowding, the inability to recognize objects in clutter, is known to play a role in developmental changes in reading speed. Here, we investigated whether crowding also plays a role in age-related changes in reading speed. We recruited 18 young (mean age: 22.6 ± 3.5; range: 18~31) and 21 older adults (mean age: 58.2 ± 7.0; range: 50~73) with normal vision. Reading speed was measured with short blocks of text. The degree of crowding was determined by measuring crowding zone (the distance between a target and flankers required to yield a criterion recognition accuracy) and the size of the visual span (an uncrowded window in the visual field within which letters can be recognizable reliably). Measurements were made across the central 16-degree visual field using letter-recognition tasks. Our results showed that, compared to young adults, older adults exhibited significantly slower reading speed (a decrease by 30%) and larger crowding: an enlargement of crowding zone (an increase by 31%) and shrinkage of the visual span (a decrease by 6.25 bits). We also observed significant correlations between reading speed and each of the crowding measures. Our results suggest that crowding increases with age. Age-related changes in crowding may in part explain slower reading in older adults.
format	article
author	Rong Liu Bhavika N. Patel MiYoung Kwon
author_facet	Rong Liu Bhavika N. Patel MiYoung Kwon
author_sort	Rong Liu
title	Age-related changes in crowding and reading speed
title_short	Age-related changes in crowding and reading speed
title_full	Age-related changes in crowding and reading speed
title_fullStr	Age-related changes in crowding and reading speed
title_full_unstemmed	Age-related changes in crowding and reading speed
title_sort	age-related changes in crowding and reading speed
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ba184161c9f3408485347757e338db9e
work_keys_str_mv	AT rongliu agerelatedchangesincrowdingandreadingspeed AT bhavikanpatel agerelatedchangesincrowdingandreadingspeed AT miyoungkwon agerelatedchangesincrowdingandreadingspeed
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Age-related changes in crowding and reading speed

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