The decision to write this book was taken by a group of practising speech therapists who worked with bilingually language handi capped children in the UK. They formed a professional interest group called the Specific Interest Group in Bilingualism because of the need felt by speech therapists to have some forum for discuss ing the challenges posed by the assessment and treatment of the bilingually language handicapped. In these regular discussion groups it became clear that similar experiences were encountered by all speech therapists working with these client populations up and down the...