Individual differences in first language acquisition and their theoretical implications
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Evan Kidd
Abstract
Much of Lieven’s pioneering work has helped move the study of individual differences to the centre of child language research. The goal of the present chapter is to illustrate how the study of individual differences provides crucial insights into the language acquisition process. In part one, we summarise some of the evidence showing how pervasive individual differences are across the whole of the language system; from gestures to morphosyntax. In part two, we describe three causal factors implicated in explaining individual differences, which, we argue, must be built into any theory of language acquisition (intrinsic differences in the neurocognitive learning mechanisms, the child’s communicative environment, and developmental cascades in which each new linguistic skill that the child has to acquire depends critically on the prior acquisition of foundational abilities). In part three, we present an example study on the role of the speed of linguistic processing on vocabulary development, which illustrates our approach to individual differences. The results show evidence of a changing relationship between lexical processing speed and vocabulary over developmental time, perhaps as a result of the changing nature of the structure of the lexicon. The study thus highlights the benefits of an individual differences approach in building, testing, and constraining theories of language acquisition.
Abstract
Much of Lieven’s pioneering work has helped move the study of individual differences to the centre of child language research. The goal of the present chapter is to illustrate how the study of individual differences provides crucial insights into the language acquisition process. In part one, we summarise some of the evidence showing how pervasive individual differences are across the whole of the language system; from gestures to morphosyntax. In part two, we describe three causal factors implicated in explaining individual differences, which, we argue, must be built into any theory of language acquisition (intrinsic differences in the neurocognitive learning mechanisms, the child’s communicative environment, and developmental cascades in which each new linguistic skill that the child has to acquire depends critically on the prior acquisition of foundational abilities). In part three, we present an example study on the role of the speed of linguistic processing on vocabulary development, which illustrates our approach to individual differences. The results show evidence of a changing relationship between lexical processing speed and vocabulary over developmental time, perhaps as a result of the changing nature of the structure of the lexicon. The study thus highlights the benefits of an individual differences approach in building, testing, and constraining theories of language acquisition.
Chapters in this book
- Prelim pages i
- Table of contents v
- Foreword vii
- Introduction 1
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Part 1. Levels of acquisition
- Learning how to communicate in infancy 11
- Heads, shoulders, knees and toes 39
- Insights from studying statistical learning 65
- From grammatical categories to processes of categorization 91
- The retreat from transitive-causative overgeneralization errors 113
- Where form meets meaning in the acquisition of grammatical constructions 131
- Social cognitive and later language acquisition 155
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Part 2. Levels of variation
- The emergence of gesture during prelinguistic interaction 173
- Individual differences in first language acquisition and their theoretical implications 189
- Understanding the cross-linguistic pattern of verb-marking error in typically developing children and children with Developmental Language Disorder 221
- Sampling linguistic diversity to understand language development 247
- Lessons from studying language development in bilingual children 263
- Language disorders and autism 287
- Index 323
Chapters in this book
- Prelim pages i
- Table of contents v
- Foreword vii
- Introduction 1
-
Part 1. Levels of acquisition
- Learning how to communicate in infancy 11
- Heads, shoulders, knees and toes 39
- Insights from studying statistical learning 65
- From grammatical categories to processes of categorization 91
- The retreat from transitive-causative overgeneralization errors 113
- Where form meets meaning in the acquisition of grammatical constructions 131
- Social cognitive and later language acquisition 155
-
Part 2. Levels of variation
- The emergence of gesture during prelinguistic interaction 173
- Individual differences in first language acquisition and their theoretical implications 189
- Understanding the cross-linguistic pattern of verb-marking error in typically developing children and children with Developmental Language Disorder 221
- Sampling linguistic diversity to understand language development 247
- Lessons from studying language development in bilingual children 263
- Language disorders and autism 287
- Index 323
