Prepare SLPs and educators to support this growing population with the third edition of this bestselling textbook, developed by three influential experts on bilingual language development and aligned with Head Start guidelines on cultural and linguistic responsiveness. Updated with the latest research and recommended practices, this book gives a broad audience of future professionals the clear and comprehensive information they need to promote positive outcomes for young dual language learners and make informed decisions about assessment and intervention when a disorder is present. Readers will get up-to-date guidance on a wide range of key topics, including recognizing the typical stages of second language learning, supporting development in both languages, distinguishing a language delay from a disorder, planning culturally appropriate interventions, addressing reading disorders in bilingual children, and more. New and enhanced student-friendly features make this edition even more engaging and practical, and a robust new package of online support materials will help faculty members use the book effectively in their courses. With the foundational knowledge in this state-of-the-art textbook-also a valuable resource for in-practice SLPs and educators-professionals will be ready to help young dual language learners thrive, both at home and in the classroom. WHAT'S NEW: - New chapter on supporting heritage language development in children with immigration backgrounds - Important updates throughout the book on best practices and recent research findings from the field - Updated student-friendly features, including learning outcomes at the start of each chapter, tables and figures that illustrate key concepts and research, and Voices from the Field text boxes - Two downloadable parent questionnaires to help SLPs gather critical information when working with culturally and linguistically diverse children - New online companion materials: discussion questions and class activities for each chapter, plus a final integrative course project