Meta-analytic findings reveal lower means but higher variances in visuospatial ability in dyslexia
Article
Chamberlain, R., Brunswick, N., Siev, J. and McManus, I. 2018. Meta-analytic findings reveal lower means but higher variances in visuospatial ability in dyslexia. British Journal of Psychology. 109 (4), pp. 897-916. https://doi.org/10.1111/bjop.12321
Type | Article |
---|---|
Title | Meta-analytic findings reveal lower means but higher variances in visuospatial ability in dyslexia |
Authors | Chamberlain, R., Brunswick, N., Siev, J. and McManus, I. |
Abstract | Conflicting empirical and theoretical accounts suggest that dyslexia is associated with either average, enhanced, or impoverished high-level visuospatial processing relative to controls. Such heterogeneous results could be due to the presence of wider variability in dyslexic samples, which is unlikely to be identified at the single study level, due to lack of power. To address this, the current study reports a meta-analysis of means and variances in high-level visuospatial ability in 909 non-dyslexic and 956 dyslexic individuals. The findings suggest that dyslexia is associated not only with a lower mean performance on visuospatial tasks, but also with greater variability in performance. Through novel meta-analytic techniques, we demonstrate a negative effect size for mean differences (-.457), but a positive effect size for SD differences (+.118; SD ratio = 1.107). In doing so, this is the first study to demonstrate impoverished visuospatial processing of the majority of individuals with dyslexia in addition to greater variance in performance in this group. The findings advocate for further consideration of both the presence of, and reasons for, increased variance in perception, attention and memory across neurodevelopmental disorders. |
Keywords | dyslexia; meta-analysis of variance; visuospatial ability |
Research Group | Language, Learning and Cognition group |
Publisher | Wiley |
The British Psychological Society | |
Journal | British Journal of Psychology |
ISSN | 0007-1269 |
Electronic | 2044-8295 |
Publication dates | |
Online | 25 Jun 2018 |
04 Oct 2018 | |
Publication process dates | |
Deposited | 25 Jun 2018 |
Submitted | 21 Aug 2017 |
Accepted | 08 Jun 2018 |
Output status | Published |
Accepted author manuscript | File Access Level Open |
Copyright Statement | This is the peer reviewed version of the following article: Chamberlain, R., Brunswick, N., Siev, J. and McManus, I.C. (2018), Meta‐analytic findings reveal lower means but higher variances in visuospatial ability in dyslexia. Br J Psychol, 109: 897-916. doi:10.1111/bjop.12321, which has been published in final form at https://doi.org/10.1111/bjop.12321. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
Digital Object Identifier (DOI) | https://doi.org/10.1111/bjop.12321 |
Web of Science identifier | WOS:000446318000016 |
Language | English |
https://repository.mdx.ac.uk/item/87v06
Download files
Accepted author manuscript
Chamberlain_BJP dyslexia meta-analysis pre-proof.pdf | ||
File access level: Open |
57
total views32
total downloads1
views this month0
downloads this month