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Mean Length of Utterance in Czech Toddlers: Validity Estimates and Comparison of Words, Morphemes, and Syllables

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اقرأ على الانترنت اقرأ أكثر حفظ في قائمتي
  • المؤلفون: Klára Matiasovitsová (ORCID Klára Matiasovitsová (ORCID 0000-0002-2338-070X); Petra Cechová (ORCID Petra Cechová (ORCID 0000-0003-1200-8758); Jakub Sláma (ORCID Jakub Sláma (ORCID 0000-0002-6555-0471); Kamila Homolková (ORCID Kamila Homolková (ORCID 0000-0002-7472-8630); Filip Smolík (ORCID Filip Smolík (ORCID 0000-0003-4160-6124)
  • اللغة:
    English
  • المصدر:
    Journal of Speech, Language, and Hearing Research. 2024 67(3):837-852.
  • الموضوع:
    2024
  • نوع التسجيلة:
    Journal Articles
    Reports - Research
  • معلومة اضافية
    • Peer Reviewed:
      Y
    • المصدر:
      16
    • الموضوع:
      Foreign Countries; Toddlers; Slavic Languages; Morphemes; Syllables; Word Recognition; Syntax; Vocabulary Skills; Grammar; Validity; Language Acquisition; Speech Impairments; Measurement; Language Impairments
    • الموضوع:
      Czech Republic
    • الرقم المعرف:
      10.1044/2023_JSLHR-23-00251
    • ISSN:
      1092-4388
      1558-9102
    • نبذة مختصرة :
      Purpose: We examined the properties of mean length of utterance (MLU) in Czech, a morphologically complex Slavic language. We compared the scores of MLU calculated in different units and based on different sample lengths and assessed its validity against another transcript and test-based measures. Method: One hundred nine children were recorded during free-play at 2;6 and 3;11 (years;months). We compared MLU in syllables, morphemes, and words (MLU[subscript w]) in transcripts of different lengths (50, 75, 100, and all available utterances). For evaluating the validity of MLU, we also calculated Index of Productive Syntax (IPSyn) and number of different words (NDW) and used results of receptive vocabulary and grammar comprehension tests. Results: The different MLU measures based on different sample lengths correlated closely with MLU in transcripts of all utterances (all "rs" > 0.87). We found mostly strong correlations between MLU, IPSyn, and NDW at both time points and weak or moderate correlations between MLU and grammar and vocabulary. Regression models showed the significant unique effect of MLUw at 2;6 for MLUw ([beta] = 0.29) and grammar ([beta] = 0.33) at 3;11 and vocabulary ([beta] = 0.27) at 3;7. Conclusion: MLU[subscript w] based on all utterances was confirmed as a valid measure of early language skills in Czech, as it is stable in time and shows concurrent and predictive relations with other transcript-based and test-based measures.
    • نبذة مختصرة :
      As Provided
    • الموضوع:
      2024
    • الرقم المعرف:
      EJ1417787