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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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Bidirectional perception-production relations in phonological development: evidence from positional neutralization.

Tara McAllister Byun1

  • 1Department of Communication Sciences and Disorders, Montclair State University, Bloomfield, NJ 07003, USA. mcallistert@mail.montclair.edu

Clinical Linguistics & Phonetics
|April 12, 2012
PubMed
Summary

This study investigated the link between speech production and perception in a child with phonemic contrast neutralization. Findings suggest a primary production deficit may cause reduced perceptual ability, impacting speech therapy strategies.

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Area of Science:

  • Speech-language pathology
  • Childhood speech sound disorders
  • Phonological development

Background:

  • Children neutralizing phonemic contrasts in speech production often show decreased perception of those contrasts.
  • Determining the causal relationship between perception and production deficits is crucial for effective speech therapy planning.
  • Neutralization in strong position, where errors occur in perceptually salient contexts, presents a unique challenge.

Purpose of the Study:

  • To examine the perception-production relationship in children with phonemic contrast neutralization, specifically in strong positions.
  • To test the hypothesis that neutralization in strong position results from a child-specific pattern of perceptual sensitivity.
  • To investigate whether a primary production deficit can lead to diminished perceptual ability.

Main Methods:

  • A non-word discrimination task was administered to a 4-year-old boy exhibiting neutralization in strong position.
  • The child's discrimination accuracy for phonemic contrasts was assessed, analyzing performance based on phonetic position.
  • Perceptual sensitivity to a neutralized phonemic contrast was compared to other contrasts.

Main Results:

  • The child's discrimination accuracy was highest for contrasts in the initial/strong position, where production errors were observed.
  • Perception of the neutralized phonemic contrast was reduced compared to other contrasts, irrespective of phonetic position.
  • Results contradicted the hypothesis that neutralization in strong position stems from perceptual sensitivity patterns.

Conclusions:

  • The case provides evidence that a primary deficit in speech production can lead to a secondary decrease in perceptual ability.
  • This finding has significant implications for understanding the etiology of speech sound disorders and informing treatment approaches.
  • The study highlights the complex interplay between speech production and perception in phonological development.