Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment.

Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment. Research Abstract Details 

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Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment. Abstract Text:

James W Montgomery,Laurence B Leonard,

PURPOSE: This study reports the findings of an investigation designed to examine the effects of acoustic enhancement on the processing of low-phonetic-substance inflections (e.g., 3rd-person singular -s, possessive -s) versus a high-phonetic-substance inflection (e.g., present progressive -ing) by children with specific language impairment (SLI) in a word recognition, reaction time (RT) processing task. The effects of acoustic enhancement on the processing of the same morphemes as well as an additional morpheme (comparative -er) were examined in an offline grammaticality judgment task. The grammatical function of 1 of the higher-phonetic-substance inflections, -ing, was presumed to be hypothesized relatively early by children; the function of the other, -er, was presumed to be hypothesized relatively late. METHOD: Sixteen children with SLI (age(M) = 9 years;0 months) and 16 chronological age (CA; age(M) = 8;11) children participated. For both tasks, children listened to sentences containing the target morphemes as they were produced naturally (natural condition) or with acoustic enhancement (enhanced condition). RESULTS: On the RT task, the children with SLI demonstrated RT sensitivity only to the presence of the high-substance inflection, irrespective of whether it was produced naturally or with enhancement. Acoustic enhancement had no effect on these children's processing of low-substance inflections. The CA children, by contrast, showed sensitivity to low-substance inflections when they were produced naturally and with acoustic enhancement. These children also showed sensitivity to the high-substance inflection in the natural condition, but in the enhanced condition they demonstrated significantly slower RT. On the grammaticality judgment task, the children with SLI performed worse than the CA children overall and showed especially poor performance on low-substance inflections. Acoustic enhancement had a beneficial effect on the inflectional processing of the children with SLI, but it had no effect on CA children. CONCLUSION: The findings are interpreted to suggest that the reduced language processing capacity of children with SLI constrains their ability to process low-substance grammatical material in real time. This factor should be considered along with any difficulty that might be attributable to the grammatical function of the inflection.

Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment. Publishing Authors By Initials

JW Montgomery,LB Leonard,

For similar natural sciences: time: time factors research abstracts see: natural sciences: time: time factors research

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Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Journal of speech, language, and hearing research

VOLUME: 49

Page Numbers: 1238-56

Journal Abbreviation: J. Speech Lang. Hear. Res.

ISSN: 1092-4388

DAY: 3

MONTH: Dec

YEAR: 2006

Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment. Information

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LANGUAGE: eng

NlmUniqueID: 9705610

Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment. Keywords Mesh Terms:

KEYWORDS: Time Factors

MESH TERMS: diagnosis

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Grant and Affiliation Information for Effects of acoustic manipulation on the real-time inflectional processing of children with specific language impairment.

AFFILIATION: Grover Center W231, School of Hearing, Speech and Language Sciences, Ohio University, Athens, OH 45701, USA. montgoj1@ohio.edu

Country: United States

AGENCY: United States NIDCD

GRANT: DC 02535

ACRONYM: DC

MEDLINETA: J Speech Lang Hear Res

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