Motor Speech Disorders: Diagnosis and Treatment

Fourth Edition

Donald B. Freed

Details: 381 pages, Full Color, Soft Cover, 7" x 10"

ISBN13: 978-1-63550-607-5

© 2025 | Available

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Motor Speech Disorders: Diagnosis and Treatment, Fourth Edition offers a detailed yet streamlined introduction to motor speech disorders for graduate speech-language pathology students and beginning clinicians. The text begins with a brief historical overview of motor speech disorders, providing useful context for understanding the technology and methodology used by today’s speech-language pathologists for assessment and treatment. The book also provides a practical introduction to the human motor system with 45 full-color anatomical illustrations enabling readers to more easily understand the challenging material.  A full chapter is dedicated to the assessment of the disorders and includes a detailed explanation of the complete motor speech examination.

The majority of the text is focused on the six pure dysarthrias, mixed dysarthria, and apraxia of speech. Throughout these chapters, a consistent organization is maintained to facilitate the reader’s understanding of the disorders. Each chapter begins with the neurological basis of the condition, then covers the causes of the disorder, an examination of the relevant speech characteristics, and key evaluation tasks specific to the disorder; and concludes with treatment procedures.

Key Features

  • The author uses an uncomplicated presentation of neurological conditions with an accessible writing style
  • Chapter outlines identify the major topics discussed in each chapter
  • A concise summary effectively wraps up each chapter to emphasize key points for students
  • End-of-chapter study questions prompt review and application of topics discussed in each chapter
  • 230 bolded key terms throughout with an end-of-book glossary
  • 18 clinical cases with videos of real patients with motor speech disorders

New to the Fourth Edition

  • Several new illustrations providing insight into how certain diseases affect the motor system
  • New information/developments related to:
    • conditions that can cause dysarthria
    • assessment of dysarthria and apraxia of speech
    • treatment tasks, with particular focus on evidence-based procedures
  • Many updated references and citations in nearly every chapter 
  • Glossary eFlashcards for students

PluralPlus Online Ancillaries

  • For instructors: PowerPoint slides, Test bank, Image Bank, Clinical Case Videos
  • For students: eFlashcards, Clinical Case Videos

About the Author

Chapter 1. A Brief Historical Review of Motor Speech Disorders

Case Reports From Ancient Greece
Case Reports From the Middle Ages and Renaissance
Two Early Theories on the Localization of Reason
From the 19th Century to Today

Chapter 2. The Motor System

Components of the Motor System
Structure and Function of the Motor System
Summary of the Motor System
Study Questions

Chapter 3. Evaluation of Motor Speech Disorders

Goals of a Motor Speech Evaluation
Speech Production Components and Disorders
Standardized Tests for Dysarthria
Standardized Tests for Apraxia of Speech
Conducting a Motor Speech Evaluation
Instructions for the Motor Speech Evaluation
Auditory-Perceptual Evaluations of the Motor Speech Mechanism
Summary of the Evaluation of Motor Speech Disorders
Study Questions
Appendix 3–1: Motor Speech Examination

Chapter 4. Flaccid Dysarthria

Definitions of Flaccid Dysarthria
Neurologic Basis of Flaccid Dysarthria
Causes of Flaccid Dysarthria
Speech Characteristics of Flaccid Dysarthria
Key Evaluation Tasks for Flaccid Dysarthria
Treatment of Motor Speech Disorders
Treatment of Flaccid Dysarthria
Summary of Flaccid Dysarthria
Study Questions

Chapter 5. Spastic Dysarthria

Definitions of Spastic Dysarthria
Neurologic Basis of Spastic Dysarthria
Causes of Spastic Dysarthria
Speech Characteristics of Spastic Dysarthria
Spastic Dysarthria Versus Flaccid Dysarthria
Key Evaluation Tasks for Spastic Dysarthria
Treatment of Spastic Dysarthria
Summary of Spastic Dysarthria
Study Questions

Chapter 6. Unilateral Upper Motor Neuron Dysarthria

Definitions of Unilateral Upper Motor Neuron Dysarthria
Neurologic Basis of Unilateral Upper Motor Neuron Dysarthria
Causes of Unilateral Upper Motor Neuron Dysarthria
Speech Characteristics of Unilateral Upper Motor Neuron Dysarthria
Key Evaluation Tasks for Unilateral Upper Motor Neuron Dysarthria
Treatment of Unilateral Upper Motor Neuron Dysarthria
Summary of Unilateral Upper Motor Neuron Dysarthria
Study Questions

Chapter 7. Ataxic Dysarthria

Definitions of Ataxic Dysarthria
Neurologic Basis of Ataxic Dysarthria
The Cerebellum and Speech
Causes of Ataxic Dysarthria
Speech Characteristics of Ataxic Dysarthria
Key Evaluation Tasks for Ataxic Dysarthria
Treatment of Ataxic Dysarthria
Summary of Ataxic Dysarthria
Study Questions

Chapter 8. Hypokinetic Dysarthria

Definitions of Hypokinetic Dysarthria
Neurologic Basis of Hypokinetic Dysarthria
Causes of Hypokinetic Dysarthria
Speech Characteristics of Hypokinetic Dysarthria
Key Evaluation Tasks for Hypokinetic Dysarthria
Treatment of Hypokinetic Dysarthria
Summary of Hypokinetic Dysarthria
Study Questions

Chapter 9. Hyperkinetic Dysarthria

Definitions of Hyperkinetic Dysarthria
Neurologic Basis of Hyperkinetic Dysarthria
Causes of Hyperkinetic Dysarthria
Key Evaluation Tasks for Hyperkinetic Dysarthria
Treatment of Hyperkinetic Dysarthria
Summary of Hyperkinetic Dysarthria
Study Questions

Chapter 10. Mixed Dysarthria

Definitions of Mixed Dysarthria
Neurologic Basis of Mixed Dysarthria
Causes of Mixed Dysarthria
Treatment of Mixed Dysarthria
Summary of Mixed Dysarthria
Study Questions

Chapter 11. Apraxia of Speech

Definition of Apraxia of Speech
Overview of the Apraxias
Neurologic Basis of Apraxia of Speech
Causes of Apraxia of Speech
Speech Characteristics of Apraxia of Speech
Assessment of Apraxia of Speech
Differential Diagnosis of Apraxia of Speech
Additional Diagnostic Considerations
Treatment of Apraxia of Speech
Summary of Apraxia of Speech
Study Questions



Donald B. Freed

Donald Freed, PhD is a chair emeritus in the Department of Communicative Sciences and Deaf Studies at California State University, Fresno. He received both his MS and PhD from the University of Oregon. Prior to joining the Fresno faculty, he worked as a speech-language pathologist in acute care and rehabilitation facilities, and served as a research speech pathologist at the Portland Veterans Affairs Medical Center. His research has concentrated on aphasia and motor speech disorders. He has published articles in journals such as Aphasiology, Clinical Aphasiology, American Journal of Speech and Language Pathology, and Journal of Speech and Hearing Research.

Learn More

Motor Speech Disorders: Diagnosis and Treatment, Fourth Edition comes with access to supplementary student and instructor resources on a PluralPlus companion website.

The companion website is located at:


The student resources include eFlashcards and videos

To access the resources, you must register on the companion website and log in using the access code located in the front of your textbook. If you purchased an eBook directly from Plural accessible on the Plural eReader, the resources are accessible within the Plural eBook.  


The instructor resources include PowerPoint slides, test bank, image bank, and videos. You will also have access to all of the student resources listed above.

To access the instructor resources, you must contact Plural Publishing, Inc. to be verified as an instructor and receive your access code.


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