Book excerpt: INTRO: A Guide to Communication Sciences and Disorders, Third Edition is designed for the undergraduate student with an interest in entering the field of communication sciences and disorders. INTRO is an introduction to the professions of speech-language pathology and audiology and the underlying discipline on which they are based, communication sciences and disorders. This text provides essential information concerning a wide range of communication disorders found in children and adults. Key Features: A strong international focus with coverage of country-specific incidence and prevalence of various communication disorders.Each chapter begins with learning objectives and ends with study questions to review key concepts.Bolded key terms and a comprehensive glossary improve retention of the material.The text includes real-life examples in the form of video links to help reinforce the information in the text. New to the Third Edition: A reorganized chapter on communication disorders and the professions for greater flow of information (Chapter 1).A NEW chapter on alternative and augmentative communication (Chapter 10).Thoroughly updated chapters on audition (Chapters 12 and 13). INTRO is beautifully illustrated and written in an engaging, yet straightforward approach, with an overview of the formative history, as well as current theories and research provided for each disorder. The sole authorship of the book ensures a uniform writing style, which is often missing from introductory texts. The book holds worldwide appeal and is written for an international audience. For some, this book may serve as a springboard for the pursuit of a career in audiology and speech-language pathology; nevertheless, every reader will acquire an appreciation of the gift of communication. Disclaimer: Please note that ancillary content (such as documents, audio, and video, etc.) may not be included as published in the original print version of this book.