Preliminaries. Background ; Phonological theory and phonological acquisition ; perception and production ; Competence and performance ; Levels of adequacy ; Levels of representation and the units of representation ; Learnability ; Universals and innateness ; Continuity -- The main claims of Smith (1973) and the evidence for them. Introduction ; The nature of lexical representations ; Realisation rules ; The role of perception -- Competing theories. Rule-based (generative) theories ; Parameter-setting models ; Constraint-based theories, especially Optimality Theory ; Usage-based and connectionist models ; Interim conclusions -- Z and his development. Family background ; Data and their collection ; Analysis ; Stages of development -- The nature of the acquisition of phonology. Conceptual issues arising from the phonological development of A and Z ; Technical issues arising from the phonological development of A and Z ; A smorgasbord? ; Conclusions and speculations -- Diachronic lexicon of Z data. Table of stages and ages ; Table of sessions and ages ; The lexicon ; Z's repertoire of gestures -- Appendices. Z's cluster production ; Adult English initial clusters and their realisation by Z ; Metalinguistic data ; Inventory of Z's judgements of what various words begin with.
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Language acquisition -- Longitudinal studies
Language acquisition-- Age factors -- Longitudinal studies.
English language-- Phonology --Longitudinal studies.