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Notes on Ingram's whole-word measures for phonological development.

Helena Taelman1, Gert Durieux, Steven Gillis

  • 1University of Antwerp, Dept. of Linguistics, CNTS, Universiteitsplein 1, B-2610 Wilrijk, Belgium. Helena.Taelman@ua.ac.be

Journal of Child Language
|July 28, 2005
PubMed
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This study examines the whole-word phonological measure pMLU (percentage of correct whole-word forms). We assessed its reliability and validity using computational tools on Dutch CHILDES data, proposing minimal sample sizes for accurate phonological development assessment.

Area of Science:

  • Linguistics
  • Speech-Language Pathology
  • Developmental Psychology

Background:

  • Phonological development is crucial for language acquisition.
  • Existing measures may lack consistency.
  • The percentage of correct whole-word forms (pMLU) is a proposed whole-word measure.

Purpose of the Study:

  • To analyze Ingram's rules for pMLU calculation.
  • To assess the reliability and validity of pMLU.
  • To determine the impact of transcription level on pMLU comparability.

Main Methods:

  • Analysis of Ingram's pMLU calculation rules.
  • Computational measurement of pMLU on two large Dutch CHILDES corpora.
  • Statistical assessment of reliability and validity.

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Main Results:

  • Transcription level significantly impacts pMLU comparability across corpora.
  • Reliable pMLU measurements require specific sample sizes.
  • Proposed minimal sample sizes are relative to phonological development stage.

Conclusions:

  • pMLU is a valuable measure for assessing phonological development.
  • Standardized transcription is essential for reliable pMLU data.
  • Guidelines for minimal sample sizes enhance pMLU's utility in research.