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Department of Special Education and Communication Disorders: Faculty Publications

Dyslexia

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Full-Text Articles in Education

Reading Acceleration Training Changes Brain Circuitry In Children With Reading Difficulties, Tzipi Horowitz-Kraus, Jennifer J. Vannest, Darren Kadis, Nicole Cicchino, Yingying Y. Wang, Scott K. Holland Jan 2014

Reading Acceleration Training Changes Brain Circuitry In Children With Reading Difficulties, Tzipi Horowitz-Kraus, Jennifer J. Vannest, Darren Kadis, Nicole Cicchino, Yingying Y. Wang, Scott K. Holland

Department of Special Education and Communication Disorders: Faculty Publications

Introduction: Dyslexia is characterized by slow, inaccurate reading. Previous studies have shown that the Reading Acceleration Program (RAP) improves reading speed and accuracy in children and adults with dyslexia and in typical readers across different orthographies. However, the effect of the RAP on the neural circuitry of reading has not been established. In the current study, we examined the effect of the RAP training on regions of interest in the neural circuitry for reading using a lexical decision task during fMRI in children with reading difficulties and typical readers. Methods: Children (8–12 years old) with reading difficulties and typical readers …


Phonological And Lexical Influences On Phonological Awareness In Children With Specific Language Impairment And Dyslexia, Kelly Farquharson, Tracy M. Centanni, Chelsea E. Franzluebbers, Tiffany Hogan Jan 2014

Phonological And Lexical Influences On Phonological Awareness In Children With Specific Language Impairment And Dyslexia, Kelly Farquharson, Tracy M. Centanni, Chelsea E. Franzluebbers, Tiffany Hogan

Department of Special Education and Communication Disorders: Faculty Publications

Children with dyslexia and/or specific language impairment have marked deficits in phonological processing, putting them at an increased risk for reading deficits. The current study sought to examine the influence of word-level phonological and lexical characteristics on phonological awareness. Children with dyslexia and/or specific language impairment were tested using a phoneme deletion task in which stimuli differed orthogonally by sound similarity and neighborhood density. Phonological and lexical factors influenced performance differently across groups. Children with dyslexia appeared to have a more immature and aberrant pattern of phonological and lexical influence (e.g., favoring sparse and similar features). Children with SLI performed …


Is Weak Oral Language Associated With Poor Spelling In School-Age Children With Specific Language Impairment, Dyslexia Or Both?, Jillian H. Mccarthy, Tiffany Hogan, Hugh W. Catts Sep 2012

Is Weak Oral Language Associated With Poor Spelling In School-Age Children With Specific Language Impairment, Dyslexia Or Both?, Jillian H. Mccarthy, Tiffany Hogan, Hugh W. Catts

Department of Special Education and Communication Disorders: Faculty Publications

The purpose of this study was to test the hypothesis that word reading accuracy, not oral language, is associated with spelling performance in school-age children. We compared fourth grade spelling accuracy in children with specific language impairment (SLI), dyslexia or both (SLI/dyslexia) to their typically developing grade-matched peers. Results of the study revealed that children with SLI performed similarly to their typically developing peers on a single-word spelling task. Alternatively, those with dyslexia and SLI/dyslexia evidenced poor spelling accuracy. Errors made by both those with dyslexia and SLI/dyslexia were characterized by numerous phonologic, orthographic and semantic errors. Cumulative results support …


Are Specific Language Impairment And Dyslexia Distinct Disorders?, Hugh W. Catts, Suzanne M. Adlof, Tiffany Hogan, Susan Ellis Weismer Jan 2005

Are Specific Language Impairment And Dyslexia Distinct Disorders?, Hugh W. Catts, Suzanne M. Adlof, Tiffany Hogan, Susan Ellis Weismer

Department of Special Education and Communication Disorders: Faculty Publications

Purpose: The purpose of this study was to determine whether specific language impairment (SLI) and dyslexia are distinct developmental disorders.
Method: Study 1 investigated the overlap between SLI identified in kindergarten and dyslexia identified in 2nd, 4th, or 8th grades in a representative sample of 527 children. Study 2 examined phonological processing in a subsample of participants, including 21 children with dyslexia only, 43 children with SLI only, 18 children with SLI and dyslexia, and 165 children with typical language/reading development. Measures of phonological awareness and nonword repetition were considered.
Results: Study 1 showed limited but statistically significant overlap between …