Developmental Trends in Lexical Diversity  

Oleh:

Richards, Brian ; Chipere, Ngoni ; Vern, David Mal ; Duran, Pilar

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Applied Linguistics (Full Text) vol. 25 no. 2 (Jun. 2004), page 220-242.
Fulltext: 25,2;220-242.pdf (1.11MB)

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/APL/25 Non-tandon: tidak ada Tandon: 1

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Isi artikel

This article discusses issues in measuring lexical diversity, before outlining an approach based on mathematical modelling that produces a measure, D, designed to address these problems. The procedure for obtaining values for D directly from transcripts using software (vocd) is introduced, and then applied to thirty-two children from the Bristol Study of Language Development (Wells 1985) at ten different ages. A significant developmental trend is shown for D and an indication is given of the average scores and ranges to be expected between the ages of 18 and 42 months and at 5 years for these Ll English speakers. The meaning attributable to further ranges of values for D is illustrated by ana lysing the lexical diversity of academic writing, and its wider application is demonstrated with examples from specific language impairment, morphological development, and foreign/second language learning.

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