Room to read: The effect of extra-large letter spacing and coloured overlays on reading speed and accuracy in adolescents with dyslexia

Steven D. Stagg and Nathan Kiss 2021. Room to read: The effect of extra-large letter spacing and coloured overlays on reading speed and accuracy in adolescents with dyslexia. Research in Developmental Disabilities. 119 104065. https://doi.org/10.1016/j.ridd.2021.104065

TitleRoom to read: The effect of extra-large letter spacing and coloured overlays on reading speed and accuracy in adolescents with dyslexia
TypeJournal article
AuthorsSteven D. Stagg and Nathan Kiss
Abstract

Background
Coloured overlay and extra-large letter spacing may improve reading speed and accuracy in individuals with dyslexia; however, research has yet to identify which types of reading errors are diminished.
Aim
To determine the impact of extra-large letter spacing and colour overlay on reading and assess the impact of both interventions on reading errors.
Sample
Thirty-two dyslexic children were matched on age, verbal and non-verbal IQ with 27 children with no diagnosis of dyslexia. The average age of each group was 13 years.
Method
Participants read four texts with either standard or extra-large letter spacing with or without a coloured overlay.
Results
Extra-large letter spacing significantly improved reading speed more substantially for the dyslexia group. In addition, extra-large letters significantly reduced the number of missed word errors made by the dyslexia group. In contrast, coloured overlays did not significantly impact reading speed or the reduction of errors.
Conclusion
Increasing letter spacing is an effective way for teachers to improve reading skills in students with dyslexia.

Article number104065
JournalResearch in Developmental Disabilities
Journal citation119
ISSN0891-4222
1873-3379
Year2021
PublisherElsevier
Digital Object Identifier (DOI)https://doi.org/10.1016/j.ridd.2021.104065
Web address (URL)https://doi.org/10.1016/j.ridd.2021.104065
Publication dates
Published in printDec 2021
Published online29 Sep 2021

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