Objective: Hyperlexic-like reading (defined as word decoding much better than comprehension) has been associated with autism spectrum disorder (ASD). Here we study correlates of a hyperlexic-like reading style (HPL) in ADHD, a condition known to co-occur both with reading difficulties and ASD.
Method: We compared 10 girls with an ADHD diagnosis plus HPL with 26 with ADHD minus HPL.
Results: Girls with HPL scored marginally lower in reading comprehension but did not differ from non-HPL girls in IQ, vocabulary, or in the severity of ADHD ratings. However, in addition to scoring much better on word decoding, HPL readers also displayed higher levels of social-communication deficits on the ADOS-G and the ADI-R. Moreover, correlation analysis in the full sample revealed an association between increasing autistic features and word reading.
Conclusion: The study underscores the heterogeneity of reading skills in ADHD, and shows the relevance of subclinic autistic features for understanding this variability.
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| http://dx.doi.org/10.1177/1087054716685838 | DOI Listing |
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Hyperlexia: Systematic review, neurocognitive modelling, and outcome.
Neurosci Biobehav Rev
August 2017
Centre d'excellence en Troubles Envahissants du Développement de l'Université de Montréal (CETEDUM), Hôpital Rivière-des-Prairies, 7070 Boulevard Perras, H1E 1A4, Montréal, QC, Canada; Centre de recherche du CIUSSS du Nord de l'Île de Montréal, Québec, Canada; Département de Psychiatrie, Université de Montréal, H3T 1J4, Québec, Canada. Electronic address:
Hyperlexia is defined as the co-occurrence of advanced reading skills relative to comprehension skills or general intelligence, the early acquisition of reading skills without explicit teaching, and a strong orientation toward written material, generally in the context of a neurodevelopmental disorder. In this systematic review of cases (N=82) and group studies (including 912 participants of which 315 are hyperlexic), we address: whether the hyperlexic profile is associated with autism and why, whether models of non-autistic reading can teach us about hyperlexia, and what additional information we can get from models specific to autistic cognitive functioning. We find that hyperlexia, or a hyperlexic-like profile, characterises a substantial portion of the autistic spectrum, in which the subcomponents of the typical reading architecture are altered and dissociated.
View Article and Find Full Text PDFObjective: Hyperlexic-like reading (defined as word decoding much better than comprehension) has been associated with autism spectrum disorder (ASD). Here we study correlates of a hyperlexic-like reading style (HPL) in ADHD, a condition known to co-occur both with reading difficulties and ASD.
Method: We compared 10 girls with an ADHD diagnosis plus HPL with 26 with ADHD minus HPL.
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