Journal of Learning Disabilities · 2008 · 117 citations · 60 references
Prior research links rapid automatic naming to spelling ability, but previous studies failed to control for nonsense‑word spelling before assessing this relationship. The study assessed 65 children with poor spelling but average reasoning on RAN, spelling, reading, and reasoning tasks. After controlling for age, reasoning, and nonsense‑word spelling, alphanumeric RAN remained a strong predictor of spelling, whereas nonalphanumeric RAN did not.
Some previous research has shown strong associations between spelling ability and rapid automatic naming (RAN) after controls for phonological processing and nonsense-word reading ability, consistent with the double-deficit hypothesis in reading and spelling. Previous studies did not, however, control for nonsense-word spelling ability before assessing RAN—spelling associations. In this study, 65 children with poor spelling skills but average reasoning ability completed RAN tasks and spelling, reading, and reasoning tasks. Hierarchical regression analyses revealed that, after controls for chronological age, reasoning ability, and spelling of nonsense words, alphanumeric RAN, but not nonalphanumeric RAN, was still a strong predictor of spelling acquisition. Findings are discussed in terms of single- and double-deficit models of spelling and implications for effective teaching.
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Statistical Power Analysis for the Behavioral Sciences
Keith E. Muller · Technometrics · 1989 · 16.5K citations
Behavioral Sciences, Statistical Power Analysis, Engineering +4
Richard K. Wagner, Joseph K. Torgesen, Carol A. Rashotte · Developmental Psychology · 1994 · 1.4K citations
Language Development, Psycholinguistics, Bidirectional Causality +21