Lexical Diversity in the Spontaneous Speech of Children With Specific Language Impairment: Application of D.
The lexical diversity of children with specific language impairment (SLI) (ages 3 years 7 months to 7 years 3 months) was compared to that of normally developing same-age peers and younger normally developing children matched according to mean length of utterance in words (MLUw). Lexical diversity w...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 45; no. 5; pp. 927 - 938 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
October 2002
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=507789838&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 507789838 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: October 2002 vid: 45 iid: 5 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 507789838 10.1044/1092-4388(2002/075) ppf: 927 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P size: 4.2MB tig: atl: Lexical Diversity in the Spontaneous Speech of Children With Specific Language Impairment: Application of D. aug: au: Owen, Amanda J. Leonard, Laurence B. su: Children with learning disabilities Language acquisition Children's language Vocabulary Language disorders sug: subj: Children with learning disabilities Language acquisition Children's language Vocabulary Language disorders keyword: Vocabulary development ab: The lexical diversity of children with specific language impairment (SLI) (ages 3 years 7 months to 7 years 3 months) was compared to that of normally developing same-age peers and younger normally developing children matched according to mean length of utterance in words (MLUw). Lexical diversity was calculated from spontaneous speech samples using D, a measure that uses repeated calculations of type-token ratio (TTR) to estimate how TTR changes as the speech samples increase in size. When D computations were based on 250-word samples, developmental differences were apparent. For both children with SLI and typically developing children, older subgroups showed higher D scores than younger subgroups, and subgroups with higher MLUws showed higher D scores than subgroups with lower MLUws. Children with SLI did not differ from same-age peers. At lower MLUw levels, children with SLI showed higher D scores than younger typically developing children matched for MLUw. The developmental sensitivity of D notwithstanding, comparisons using 100-utterance samples, in which the number of lexical tokens varied as a function of the children's MLUws, and comparisons between 250- and 500-word samples revealed the possible influence of sample size on this measure. However, analysis of the effect sizes using smaller and larger samples revealed that D is not affected by sample size to the degree seen for more traditional measures of lexical diversity. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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