Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.

Previous research has shown that adults with dyslexia (AwD) are disproportionately impacted by close spacing of stimuli and increased numbers of distractors in a visual search task compared to controls [1]. Using an orientation discrimination task, the present study extended these findings to show t...

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Autores principales:	Rizan Cassim, Joel B Talcott, Elisabeth Moores
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e2fe368a758447109e223c2c82a7579a
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spelling	oai:doaj.org-article:e2fe368a758447109e223c2c82a7579a2021-11-25T06:02:05ZAdults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.1932-620310.1371/journal.pone.0106191https://doaj.org/article/e2fe368a758447109e223c2c82a7579a2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25184299/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Previous research has shown that adults with dyslexia (AwD) are disproportionately impacted by close spacing of stimuli and increased numbers of distractors in a visual search task compared to controls [1]. Using an orientation discrimination task, the present study extended these findings to show that even in conditions where target search was not required: (i) AwD had detrimental effects of both crowding and increased numbers of distractors; (ii) AwD had more pronounced difficulty with distractor exclusion in the left visual field and (iii) measures of crowding and distractor exclusion correlated significantly with literacy measures. Furthermore, such difficulties were not accounted for by the presence of covarying symptoms of ADHD in the participant groups. These findings provide further evidence to suggest that the ability to exclude distracting stimuli likely contributes to the reported visual attention difficulties in AwD and to the aetiology of literacy difficulties. The pattern of results is consistent with weaker and asymmetric attention in AwD.Rizan CassimJoel B TalcottElisabeth MooresPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 9, p e106191 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rizan Cassim Joel B Talcott Elisabeth Moores Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
description	Previous research has shown that adults with dyslexia (AwD) are disproportionately impacted by close spacing of stimuli and increased numbers of distractors in a visual search task compared to controls [1]. Using an orientation discrimination task, the present study extended these findings to show that even in conditions where target search was not required: (i) AwD had detrimental effects of both crowding and increased numbers of distractors; (ii) AwD had more pronounced difficulty with distractor exclusion in the left visual field and (iii) measures of crowding and distractor exclusion correlated significantly with literacy measures. Furthermore, such difficulties were not accounted for by the presence of covarying symptoms of ADHD in the participant groups. These findings provide further evidence to suggest that the ability to exclude distracting stimuli likely contributes to the reported visual attention difficulties in AwD and to the aetiology of literacy difficulties. The pattern of results is consistent with weaker and asymmetric attention in AwD.
format	article
author	Rizan Cassim Joel B Talcott Elisabeth Moores
author_facet	Rizan Cassim Joel B Talcott Elisabeth Moores
author_sort	Rizan Cassim
title	Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
title_short	Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
title_full	Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
title_fullStr	Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
title_full_unstemmed	Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
title_sort	adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/e2fe368a758447109e223c2c82a7579a
work_keys_str_mv	AT rizancassim adultswithdyslexiademonstratelargeeffectsofcrowdinganddetrimentaleffectsofdistractorsinavisualtiltdiscriminationtask AT joelbtalcott adultswithdyslexiademonstratelargeeffectsofcrowdinganddetrimentaleffectsofdistractorsinavisualtiltdiscriminationtask AT elisabethmoores adultswithdyslexiademonstratelargeeffectsofcrowdinganddetrimentaleffectsofdistractorsinavisualtiltdiscriminationtask
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Adults with dyslexia demonstrate large effects of crowding and detrimental effects of distractors in a visual tilt discrimination task.

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