期刊
JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
卷 51, 期 2, 页码 394-407出版社
AMER SPEECH-LANGUAGE-HEARING ASSOC
DOI: 10.1044/1092-4388(2008/029)
关键词
late talking outcomes; specific language impairment; longitudinal study
Purpose: The aim of this study was to investigate the language outcomes of 7-year-old children with and without a history of late language emergence at 24 months. Method: One hundred twenty-eight children with a history of late language emergence (LLE) at 24 months and 109 children with a history of normal language emergence (NLE) at 24 months participated in direct behavioral assessment of multiple dimensions of language at 7 years. The children were recruited from a prospective cohort study of 1,766 epidemiologically ascertained 24-month-old singleton children. Results: The group mean for the LLE children was within the typical range on an omnibus measure of general language ability and measures of specific dimensions of language. However, a greater percentage of LLE children, relative to NLE children, performed below normative expectations on a measure of general language ability (20% versus 11%), speech (7% versus 2%), syntax (18% versus 8%), and morphosyntax (9%-23% versus 2%-14%), but not vocabulary or semantics. Conclusion: The results provide support for growth models of language impairment that predict that late onset of language foretells a protracted growth difference for some LLE children relative to NLE children, particularly for syntax and morphosyntax.
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