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Journal of Autism and Developmental Disorders

Gepubliceerd in:

01-04-2007 | Original Paper

Hyperlexia in Children with Autism Spectrum Disorders

Auteurs: Tina M. Newman, Donna Macomber, Adam J. Naples, Tammy Babitz, Fred Volkmar, Elena L. Grigorenko

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 4/2007

Abstract

We compared the reading-related skills of children with Autism Spectrum Disorders who have hyperlexia (ASD + HPL) with age-matched children with ASD without HPL (ASD − HPL) and with single-word reading-matched typically developing children (TYP). Children with ASD + HPL performed (1) better than did children with ASD − HPL on tasks of single-word reading and pseudoword decoding and (2) equivalently well compared to word-reading-matched TYP children on all reading-related tasks except reading comprehension. It appears that the general underlying model of single-word reading is the same in principle for “typical” and hyperlexic reading. Yet, the study revealed some dissimilarities between these two types of reading when more fine-grained cognitive and linguistic abilities were considered; these dissimilarities warrant further investigations.

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It is stated that permissible ratio of variance in groups to be compared is 4:1 (Moore, 1995). None of the variables in our study exceeded this ratio (see Table 2).

None of the contributing indicators (i.e., rhyming, deletion, substitution, and sound reversal) showed significant group differences consistently.

It is important to note that, because of the complexity of the phonemic tasks for the younger children, the sample sizes in these analyses were reduced and the “most pronounced” children with HPL (see Fig. 2) were deleted from these analyses. This resulted in the decrease of variance in the group of children with HPL and overall homogenization of the variance in the sample.

Introducing age as an additional variable improved classification only slightly, up to 79.4%.

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Titel: Hyperlexia in Children with Autism Spectrum Disorders
Auteurs: Tina M. Newman
Donna Macomber
Adam J. Naples
Tammy Babitz
Fred Volkmar
Elena L. Grigorenko
Publicatiedatum: 01-04-2007
Uitgeverij: Kluwer Academic Publishers-Plenum Publishers
Gepubliceerd in: Journal of Autism and Developmental Disorders / Uitgave 4/2007
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI: https://doi.org/10.1007/s10803-006-0206-y

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