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21
Mean Length of Utterance in Children With Specific Language Impairment and in Younger Control Children Shows Concurrent Validity and Stable and Parallel Growth Trajectories
In: Faculty Publications, Department of Psychology (2006)
Abstract: Purpose: Although mean length of utterance (MLU) is a useful benchmark in studies of children with specific language impairment (SLI), some empirical and interpretive issues are unresolved. The authors report on 2 studies examining, respectively, the concurrent validity and temporal stability of MLU equivalency between children with SLI and typically developing children. Method: Study 1 used 124 archival conversational samples consisting of 39 children with SLI (age 5;0 [years;months]), 40 MLU-equivalent typically developing children (age 3;0), and 45 age-equivalent controls. Concurrent validity of MLU matches was examined by considering the correspondence between MLU and developmental sentence scoring (DSS), index of productive syntax (IPSyn), and MLU in words. Study 2 used 205 archival conversational samples, representing 5 years of longitudinal data collected on 20 children with SLI (from age 5;0) and 18 MLU matches (from age 3;0). Evaluation of growth dimensions within and across groups was carried out via growth-curve modeling. Results: In Study 1, high levels of correlation among the MLU, DSS, and IPSyn measures were observed. Differences between groups were not significant. In Study 2, temporal stability of MLU matches was robust over a 5 year period. Conclusions: MLU appears to be a reliable and valid index of general language development and an appropriate grouping variable from age 3 to 10. The developmental stability of MLU matches is indicative of shared underlying growth mechanisms.
Keyword: growth curves; mean length of utterance; Psychiatry and Psychology; specific language impairment; vocabulary development
URL: https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1434&context=psychfacpub
https://digitalcommons.unl.edu/psychfacpub/435
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22
Differentiating SLI from ADHD using children's sentence recall and production of past tense morphology
In: Clinical linguistics & phonetics. - London : Informa Healthcare 19 (2005) 2, 109-127
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23
Conversational profiles of children with ADHD, SLI and typical development
In: Clinical linguistics & phonetics. - London : Informa Healthcare 18 (2004) 2, 107-125
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24
Language - Articles and Reports - Children's Productions of the Affix -ed in Past Tense and Past Participle Contexts
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 46 (2003) 5, 1095-1109
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25
Children's productions of the affix /-ed/ in past tense and past participle contexts
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 46 (2003) 5, 1095-1109
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26
Research Note - Stability of Behavioral Ratings of Children With SLI
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 45 (2002) 1, 190-201
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27
Stability of behavioral ratings of children with SLI : research note
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 45 (2002) 1, 190-201
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28
Language - Articles and Reports - Evaluating the Morphological Competence of Children With Severe Speech and Physical Impairments
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 44 (2001) 6, 1362-1375
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29
Language - Articles and Reports - Detection of Irregular Verb Violations by Children With and Without SLI
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 44 (2001) 3, 655-669
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30
Detection of irregular verb violations by children with and without SLI
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 44 (2001) 3, 655-669
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31
Evaluating the morphological competence of children with severe speech and physical impairments
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 44 (2001) 6, 1362-1375
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32
Grammaticality judgments of an extended optional infinitive grammar : evidence from English-speaking children with specific language impairment
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 42 (1999) 4, 943-961
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33
Language - Articles and Reports - Grammaticality Judgments of an Extended Optional Infinitive Grammar: Evidence From English-Speaking Children With Specific Language Impairment
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 42 (1999) 4, 943-961
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34
The socioemotional behaviors of children with SLI : social adaptation or social deviance?
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 41 (1998) 3, 688-700
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35
Causative alternations of children with specific language impairment
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 41 (1998) 5, 1103-1114
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36
When do children acquire verbs?
In: Child Language Research Forum <26, 1994, Stanford, Calif.>. The proceedings of the Twenty-six Annual Child Language Research Forum. - Stanford, Calif. : Center for the Study of Language and Information 26 (1994), 60-70
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37
The critical period hypothesis for language acquisition and its implications for the management of communication disorders
In: National Student Speech Language Hearing Association. NSSLHA journal. - Rockville, Md. 20 (1992-1993), 25-31
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