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Reliability and validity for perceptual flexibility in speech.

Christopher C Heffner1, Pamela Fuhrmeister2, Sahil Luthra3

  • 1Department of Speech, Language, and Hearing Sciences, University of Connecticut, Storrs, CT 06269, United States; Institute for the Brain and Cognitive Sciences, University of Connecticut, Storrs, CT 06269, United States; Department of Communicative Disorders and Sciences, University at Buffalo, Buffalo, NY 14214, United States.

Brain and Language
|January 13, 2022
PubMed
Summary
This summary is machine-generated.

This study evaluated speech perceptual flexibility measures. Most tasks demonstrated good reliability, but construct validity varied, impacting potential effect sizes in research.

Keywords:
Construct validityIndividual differencesPhonetic adaptationPhonetic identificationPhonetic learningReliabilitySpeech perception

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Area of Science:

  • Psycholinguistics
  • Cognitive Neuroscience
  • Speech Perception Research

Background:

  • Perceptual flexibility in speech is crucial for understanding language variability.
  • Assessing reliability and validity of speech perception tasks is key for individual difference studies.
  • Existing measures often show high participant variability, necessitating robust evaluation.

Purpose of the Study:

  • To evaluate the split-half reliability and construct validity of five perceptual flexibility measures.
  • To examine tasks within both native and non-native language contexts.
  • To inform the use of these measures in individual difference research.

Main Methods:

  • Five perceptual flexibility tasks were administered.
  • Three tasks focused on native language learning (e.g., foreign accent perception).
  • Two tasks focused on non-native language learning (e.g., categorizing non-native speech sounds).
  • Split-half reliability and construct validity were statistically assessed.

Main Results:

  • Most tested tasks exhibited acceptable split-half reliability.
  • Construct validity was found to be weaker for some measures.
  • Findings suggest good reliability but highlight limitations for effect size estimations.

Conclusions:

  • The evaluated speech perceptual flexibility tasks offer reliable measurement options.
  • Researchers should consider the construct validity limitations when designing studies.
  • These findings guide the selection of appropriate measures for investigating the neural and clinical aspects of speech perception.