Dual Language Development and Disorders

This book explains normal and impaired dual language development and the differences between monolingual and dual language development so that professionals can understand these differences and successfully diagnose and treat dual language children with language delays and disorders. The book divides dual language children into two types: bilingual children, who have learned two languages from infancy, and second language learners, who are learning a second language after significant progress has been made with a first language. The book also breaks dual language learners into two types according to whether or not their primary language is widely used, has a high social value, and is typically associated with socioeconomic power. Case studies of four children representing each of these four groups are introduced in Chapter 1 and reoccur throughout the book. The final section of the book discusses assessment and intervention issues related to dual language children with impaired development.