| Preface | p. ix |
| Introduction | p. 1 |
| Further reading | p. 4 |
| Foundations | p. 5 |
| The history of child language studies | p. 7 |
| The period of diary studies (1876-1926) | p. 7 |
| The period of large sample studies (1926-1957) | p. 11 |
| The period of longitudinal language sampling (1957 to present) | p. 21 |
| Further reading | p. 30 |
| Stages of language acquisition | p. 32 |
| Some possible meanings of 'stage' | p. 32 |
| Some proposals on stages of acquisition | p. 38 |
| Descriptive vs. explanatory stage | p. 54 |
| Further reading | p. 57 |
| Explanation and language acquisition | p. 59 |
| Introduction | p. 59 |
| Child Language vs. Language Acquisition | p. 60 |
| A theory of acquisition | p. 63 |
| Theoretical assumptions about language acquisition | p. 69 |
| Sources of variation among children | p. 77 |
| Further reading | p. 80 |
| Milestones | p. 81 |
| The period of prelinguistic development | p. 83 |
| Introduction | p. 83 |
| Infant speech perception | p. 84 |
| Infant speech production | p. 96 |
| Early cognitive development | p. 115 |
| The linguistic environment | p. 127 |
| Further reading | p. 137 |
| The period of single-word utterances | p. 139 |
| The definition of word acquisition | p. 139 |
| Early word comprehension and production | p. 140 |
| The explanation of early word meaning | p. 155 |
| Pragmatic and grammatical development | p. 160 |
| The onset of phonemic perception and production | p. 178 |
| The linguistic environment | p. 219 |
| Further reading | p. 231 |
| The period of the first word combinations | p. 234 |
| Defining the period of the first word combinations | p. 234 |
| Grammatical development: an overview | p. 236 |
| The grammatical analysis of early word combinations | p. 261 |
| Current theoretical approaches | p. 302 |
| The methodology of grammatical analyses of children | p. 332 |
| Further reading | p. 337 |
| The period of simple sentences: phonological and semantic acquisition | p. 340 |
| Introduction | p. 340 |
| The phonological acquisition of single morphemes | p. 341 |
| The further development of word meaning | p. 394 |
| Further reading | p. 432 |
| The period of simple sentences: acquisition of grammatical morphemes | p. 435 |
| Introduction | p. 435 |
| Morphological acquisition in English: a descriptive overview | p. 439 |
| The acquisition of Aux in English questions | p. 454 |
| Other aspects of English grammatical acquisition | p. 465 |
| Cross-linguistic morphological acquisition | p. 493 |
| The explanation of morphological acquisition | p. 499 |
| Linguistic input and grammatical acquisition | p. 506 |
| Further reading | p. 513 |
| Concluding remarks | p. 516 |
| Bibliography | p. 519 |
| Author index | p. 549 |
| General index | p. 561 |
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