591. The Evolution of Understanding & Assessing Dyslexia w/ Dr. Nancy Mather

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In this episode, I sat down with Dr. Nancy Mather, a leading expert in educational assessment and learning disabilities, to examine the evolving landscape of dyslexia assessment and intervention. We discuss the historical transition in terminology from early concepts like word blindness to modern diagnostic criteria, while contrasting traditional single-deficit views with contemporary multiple-deficit models. Dr. Mather outlines key linguistic risk factors, including phonological processing, orthographic processing, working memory, and Rapid Automatized Naming (RAN), explaining how orthographic depth across different languages impacts diagnostic indicators. We also evaluate diagnostic frameworks such as Pattern of Strengths and Weaknesses (PSW), address common clinical misdiagnoses and myths, and explore the development and clinical application of the Test of Dyslexia (TOD) and the Woodcock-Johnson V. Finally, Dr. Mather shares evidence-based intervention strategies, digital tools, and practical advice for translating diagnostic profiles into targeted instructional support.

00:46: Dr. Nancy Mather’s background and shift from behavior disorders to reading intervention

06:54: The historical evolution of dyslexia terminology and shifting diagnostic perceptions

11:58: Transitioning from single-deficit models to a multiple-deficit framework of dyslexia

14:12: Rapid Automatized Naming (RAN) and reading fluency across transparent vs. deep orthographies

19:30: Debunking common dyslexia myths regarding intelligence, visual reversal, and creativity

30:38: Evaluating diagnostic models: Pattern of Strengths and Weaknesses (PSW) vs. discrepancy models

38:24: Development, subtests, and clinical utility of the Test of Dyslexia (TOD)

48:36: Technological shifts in test administration: Woodcock-Johnson V (WJ V) features and digital adaptation

54:33: Evidence-based interventions, fidelity of implementation, and digital reading tools

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