Empirically Derived Subgroups of Learning Disabled Readers

Reid Lyon · Bill Watson

116 citations0/0 files storedJournal of Learning Disabilities

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Reading and Literacy Development Language Development and Disorders Developmental and Educational Neuropsychology

Abstract

A cluster analysis procedure was used to identify subgroups of children who manifested specific learning disabilities in reading (SLD/R) in terms of performance on a battery of eight language and perceptual tests. Subjects included a group of 100 SLD/R children and 50 normal readers (NR). Six SLD/R subgroups were identified. All subgroups were both significantly different from one another as well as significantly different from the NR group's performance on the diagnostic battery. In addition, some significant differences were found among the six subgroups on measures of oral reading and reading comprehension skills. These results were compared with those of previous studies, none of which employed samples of the SLD/R youngsters identified in public schools. Results also were examined for their implications for a more precise match between the SLD/R learner characteristics and type of teaching method or material.

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References

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1988Research on the preschool prediction of later academic achievement: A review 2007In search of subtypes of Chinese developmental dyslexia 1982Neuropsychological characteristics of empirically derived subgroups of learning disabled readers 2010Subtypes of reading disability in a shallow orthography: a double dissociation between accuracy-disabled and rate-disabled readers of Hebrew 1990Identifying Phonological Coding Problems in Disabled Readers: Naming, Counting, or Span Measures?

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