Nancy Mather, PhD, is a professor emerita in the Department of Disability and Psychoeducational Studies at the University of Arizona. She specializes in the assessment and treatment of dyslexia. She is a co-author of the Tests of Dyslexia and the Woodcock-Johnson V.

Barbara J. Wendling, MA, is an author and consultant specializing in educational assessment and intervention with a focus on linking assessment to instruction. Barbara is a co-author of the Tests of Dyslexia and the Woodcock Interpretation and Instructional Interventions Program.