Nancy Mather, PhD, is a Professor at the University of Arizona in the Department of Disability and Psychoeducational Studies. She specializes in the areas of assessment, reading, writing, and learning disabilities. She has served as a learning disabilities teacher, a diagnostician, and an educational consultant.Barbara J. Wendling, MA, is the Education Director of the Woodcock-Muñoz Foundation and the Director of the Richard Woodcock Institute. She is a co-author of the manuals for the WJ IV® and the Woodcock Interpretation and Instructional Interventions Programs. She has served as a general education teacher, a learning disabilities specialist, a product manager for a test publishing company, and an educational consultant.

• Series Preface xiAcknowledgments xiiiOne Overview 1Two How to Administer the WJ IV ACH 21Three How to Score the WJ IV ACH 69Four How to Interpret the WJ IV ACH 87Five Use and Interpretation of the WJ IV Tests of Oral Language 159Six Strengths and Weaknesses of the WJ IV ACH 204John O. Willis and Ron DumontSeven Clinical Applications of the WJ IV ACH 217Eight Illustrative Case Reports 245Appendix A Fine Points of WJ IV ACH Administration and WJ IV OL Administration 299Appendix B Frequently Asked Questions About the WJ IV ACH and the WJ IV OL 311Appendix C Table for Converting z-Scores (z) to Percentile Ranks (PR) or Standard Scores (SS) 329References 331Annotated Bibliography 336Index 339

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Nancy Mather, PhD, is a Professor at the University of Arizona in the Department of Disability and Psychoeducational Studies. She specializes in the areas of assessment, reading, writing, and learning disabilities. She has served as a learning disabilities teacher, a diagnostician, and an educational consultant.Barbara J. Wendling, MA, is the Education Director of the Woodcock-Muñoz Foundation and the Director of the Richard Woodcock Institute. She is a co-author of the manuals for the WJ IV® and the Woodcock Interpretation and Instructional Interventions Programs. She has served as a general education teacher, a learning disabilities specialist, a product manager for a test publishing company, and an educational consultant.

• Series Preface xiAcknowledgments xiiiOne Overview 1Two How to Administer the WJ IV ACH 21Three How to Score the WJ IV ACH 69Four How to Interpret the WJ IV ACH 87Five Use and Interpretation of the WJ IV Tests of Oral Language 159Six Strengths and Weaknesses of the WJ IV ACH 204John O. Willis and Ron DumontSeven Clinical Applications of the WJ IV ACH 217Eight Illustrative Case Reports 245Appendix A Fine Points of WJ IV ACH Administration and WJ IV OL Administration 299Appendix B Frequently Asked Questions About the WJ IV ACH and the WJ IV OL 311Appendix C Table for Converting z-Scores (z) to Percentile Ranks (PR) or Standard Scores (SS) 329References 331Annotated Bibliography 336Index 339

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Nancy Mather, PhD, is a Professor at the University of Arizona in the Department of Disability and Psychoeducational Studies. She specializes in the areas of assessment, reading, writing, and learning disabilities. She has served as a learning disabilities teacher, a diagnostician, and an educational consultant.Barbara J. Wendling, MA, is the Education Director of the Woodcock-Muñoz Foundation and the Director of the Richard Woodcock Institute. She is a co-author of the manuals for the WJ IV® and the Woodcock Interpretation and Instructional Interventions Programs. She has served as a general education teacher, a learning disabilities specialist, a product manager for a test publishing company, and an educational consultant.

• Series Preface xiAcknowledgments xiiiOne Overview 1Two How to Administer the WJ IV ACH 21Three How to Score the WJ IV ACH 69Four How to Interpret the WJ IV ACH 87Five Use and Interpretation of the WJ IV Tests of Oral Language 159Six Strengths and Weaknesses of the WJ IV ACH 204John O. Willis and Ron DumontSeven Clinical Applications of the WJ IV ACH 217Eight Illustrative Case Reports 245Appendix A Fine Points of WJ IV ACH Administration and WJ IV OL Administration 299Appendix B Frequently Asked Questions About the WJ IV ACH and the WJ IV OL 311Appendix C Table for Converting z-Scores (z) to Percentile Ranks (PR) or Standard Scores (SS) 329References 331Annotated Bibliography 336Index 339

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