Case studies Language Children 5 English language 3 Language acquisition 3 Ability testing 2 Acquisition 1 Autistic children 1 Chinese language 1 Communicative competence in children 1 Communicative disorders 1 Conversation analysis 1 Education 1 Foreign speakers 1 Grammar, Comparative and general 1 Iban language 1 Indians 1 Language and culture 1 Language disorders in adolescence 1 Language disorders in children 1 Malay language 1 Negatives 1 Panjabi language 1 People with mental disabilities 1 Preschool children 1 Second language acquisition 1 Sociolinguistics 1 Study and teaching 1 Study and teaching (Elementary) 1 Usage 1