Abstract
Purpose: In this study, the authors examined the impact of sampling context on multiple aspects of expressive language in male participants with fragile X syndrome in comparison to male participants with Down syndrome or typical development. Method: Participants with fragile X syndrome (n = 27), ages 10-17 years, were matched groupwise on nonverbal mental age to adolescents with Down syndrome (n = 15) and typically developing 3 to 6-year-olds (n = 15). Language sampling contexts were an interview-style conversation and narration of a wordless book, with scripted examiner behavior. Language was assessed in terms of amount of talk, mean length of communication unit (MLCU), lexical diversity, fluency, and intelligibility. Results: Participants with fragile X syndrome had lower MLCU and lexical diversity than did participants with typical development. Participants with Down syndrome produced yet lower MLCU. A differential effect of context among those with fragile X syndrome, Down syndrome, and typical development emerged for the number of attempts per minute, MLCU, and fluency. For participants with fragile X syndrome, autism symptom severity related to the number of utterances produced in conversation. Aspects of examiner behavior related to participant performance. Conclusion: Sampling context characteristics should be considered when assessing expressive language in individuals with neurodevelopmental disabilities.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1022-1038 |
| Number of pages | 17 |
| Journal | Journal of Speech, Language, and Hearing Research |
| Volume | 55 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 1 2012 |
Fingerprint
Keywords
- Conversation
- Fragile X syndrome
- Language sampling
- Mean length of utterance (MLU)
- Narrative
ASJC Scopus subject areas
- Speech and Hearing
- Language and Linguistics
- Linguistics and Language
- Medicine(all)
Cite this
Effects of sampling context on spontaneous expressive Language in males with fragile X syndrome or Down syndrome. / Kover, Sara T.; McDuffie, Andrea; Abbeduto, Leonard J; Ted Brown, W.
In: Journal of Speech, Language, and Hearing Research, Vol. 55, No. 4, 01.08.2012, p. 1022-1038.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of sampling context on spontaneous expressive Language in males with fragile X syndrome or Down syndrome
AU - Kover, Sara T.
AU - McDuffie, Andrea
AU - Abbeduto, Leonard J
AU - Ted Brown, W.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - Purpose: In this study, the authors examined the impact of sampling context on multiple aspects of expressive language in male participants with fragile X syndrome in comparison to male participants with Down syndrome or typical development. Method: Participants with fragile X syndrome (n = 27), ages 10-17 years, were matched groupwise on nonverbal mental age to adolescents with Down syndrome (n = 15) and typically developing 3 to 6-year-olds (n = 15). Language sampling contexts were an interview-style conversation and narration of a wordless book, with scripted examiner behavior. Language was assessed in terms of amount of talk, mean length of communication unit (MLCU), lexical diversity, fluency, and intelligibility. Results: Participants with fragile X syndrome had lower MLCU and lexical diversity than did participants with typical development. Participants with Down syndrome produced yet lower MLCU. A differential effect of context among those with fragile X syndrome, Down syndrome, and typical development emerged for the number of attempts per minute, MLCU, and fluency. For participants with fragile X syndrome, autism symptom severity related to the number of utterances produced in conversation. Aspects of examiner behavior related to participant performance. Conclusion: Sampling context characteristics should be considered when assessing expressive language in individuals with neurodevelopmental disabilities.
AB - Purpose: In this study, the authors examined the impact of sampling context on multiple aspects of expressive language in male participants with fragile X syndrome in comparison to male participants with Down syndrome or typical development. Method: Participants with fragile X syndrome (n = 27), ages 10-17 years, were matched groupwise on nonverbal mental age to adolescents with Down syndrome (n = 15) and typically developing 3 to 6-year-olds (n = 15). Language sampling contexts were an interview-style conversation and narration of a wordless book, with scripted examiner behavior. Language was assessed in terms of amount of talk, mean length of communication unit (MLCU), lexical diversity, fluency, and intelligibility. Results: Participants with fragile X syndrome had lower MLCU and lexical diversity than did participants with typical development. Participants with Down syndrome produced yet lower MLCU. A differential effect of context among those with fragile X syndrome, Down syndrome, and typical development emerged for the number of attempts per minute, MLCU, and fluency. For participants with fragile X syndrome, autism symptom severity related to the number of utterances produced in conversation. Aspects of examiner behavior related to participant performance. Conclusion: Sampling context characteristics should be considered when assessing expressive language in individuals with neurodevelopmental disabilities.
KW - Conversation
KW - Fragile X syndrome
KW - Language sampling
KW - Mean length of utterance (MLU)
KW - Narrative
UR - http://www.scopus.com/inward/record.url?scp=84866123178&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866123178&partnerID=8YFLogxK
U2 - 10.1044/1092-4388(2011/11-0075)
DO - 10.1044/1092-4388(2011/11-0075)
M3 - Article
C2 - 22232386
AN - SCOPUS:84866123178
VL - 55
SP - 1022
EP - 1038
JO - Journal of Speech, Language, and Hearing Research
JF - Journal of Speech, Language, and Hearing Research
SN - 1092-4388
IS - 4
ER -