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Orthographic processing efficiency in developmental dyslexia: an investigation of age and treatment factors at the sublexical level

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Abstract

Reading fluency beyond decoding is a limitation to many children with developmental reading disorders. In the interest of remediating dysfluency, contributing factors need to be explored and understood in a developmental framework. The focus of this study is orthographic processing in developmental dyslexia, and how it may contribute to reading fluency. We investigated orthographic processing speed and accuracy by children identified with dyslexia that were enrolled in an intensive, fluency-based intervention using a timed visual search task as a tool to measure orthographic recognition. Results indicate both age and treatment effects, and delineate a link between rapid letter naming and efficient orthographic recognition. Orthographic efficiency was related to reading speed for passages, but not spelling performance. The role of orthographic learning in reading fluency and remediation is discussed.

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Acknowledgments

The authors wish to thank the children who participated in this research, and their families and teachers for their support, and two anonymous reviewers for their helpful comments. This study was conducted within a larger intervention project funded by NICHD (#HD30970, awarded to Morris, Lovett & Wolf).

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Authors and Affiliations

  1. School of Education, CECH, University of Cincinnati, Edwards One, P.O. Box 210105, Cincinnati, OH, 45221-0105, USA

    Beth A. O’Brien

  2. Tufts University, Medford, MA, USA

    Maryanne Wolf & Lynne T. Miller

  3. Hospital for Sick Children, Toronto, ON, Canada

    Maureen W. Lovett

  4. Georgia State University, Atlanta, GA, USA

    Robin Morris

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  1. Beth A. O’Brien
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  2. Maryanne Wolf
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  4. Maureen W. Lovett
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  5. Robin Morris
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Correspondence to Beth A. O’Brien.

Appendix

Appendix

Table 5 Letter targets and nontargets for each of the OVST conditions. Trained, untrained and illegal letter bigram search targets
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O’Brien, B.A., Wolf, M., Miller, L.T. et al. Orthographic processing efficiency in developmental dyslexia: an investigation of age and treatment factors at the sublexical level. Ann. of Dyslexia 61, 111–135 (2011). https://doi.org/10.1007/s11881-010-0050-9

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