Atypical viewing position effect in developmental dyslexia: A behavioural and modelling investigation.

Détails

ID Serval
serval:BIB_C4F6630D4FC5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Atypical viewing position effect in developmental dyslexia: A behavioural and modelling investigation.
Périodique
Cognitive neuropsychology
Auteur⸱e⸱s
Valdois S., Phénix T., Fort M., Diard J.
ISSN
1464-0627 (Electronic)
ISSN-L
0264-3294
Statut éditorial
Publié
Date de publication
07/2021
Peer-reviewed
Oui
Volume
38
Numéro
5
Pages
319-335
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
The probability of recognizing a word depends on the position of fixation during processing. In typical readers, the resulting word-recognition curves are asymmetrical, showing a left-of-centre optimal viewing position (OVP). First, we report behavioural results from dyslexic participants who show atypical word-recognition curves characterized by the OVP being right of centre with recognition probability being higher on the rightmost than on the leftmost letters. Second, we used BRAID, a Bayesian model of word recognition that implements gaze position, an acuity gradient, lateral interference and a visual attention component, to examine how variations in the deployment of visual attention would affect the OVP curves. We show that the atypical dyslexic curves are well simulated assuming a narrow distribution of visual attention and a shifting of visual attention towards the left visual field. These behavioural and modelling findings are discussed in light of current theories of visual attention deficits in developmental dyslexia.
Mots-clé
Bayes Theorem, Dyslexia, Humans, Reading, Recognition, Psychology, Visual Fields, Bayesian modelling, Developmental dyslexia, Left-right asymmetry, Optimal viewing position, Visual attention span, Word recognition
Pubmed
Web of science
Création de la notice
03/12/2021 12:19
Dernière modification de la notice
20/01/2024 8:11
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