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Unraveling phonological conspiracies: A case study.

Daniel A Dinnsen1, Judith A Gierut, Michele L Morrisette

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Summary

This study analyzes a child's speech errors, identifying a "conspiracy" to eliminate fricatives. This phonological delay pattern is explained using Optimality Theory and developmental prominence effects.

Keywords:
Optimality theoryphonological conspiraciesphonological delay

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Area of Science:

  • Linguistics
  • Speech-Language Pathology
  • Developmental Psychology

Background:

  • Children with phonological delays often exhibit complex error patterns.
  • Understanding these patterns is crucial for effective intervention.
  • A specific case, Child 218, presents three distinct but related sound errors.

Purpose of the Study:

  • To investigate a hypothesized phonological conspiracy targeting fricatives in a child with a delay.
  • To provide a unified account of observed speech sound repairs using Optimality Theory.
  • To explore the role of developmental prominence effects in contextual restrictions of these errors.

Main Methods:

  • Analysis of speech sound errors in a 4-year-old child (Child 218).
  • Application of Optimality Theory to model phonological conspiracies.
  • Comparison with a published case study of a similar phonological conspiracy.

Main Results:

  • Three seemingly unrelated error patterns were unified under a single phonological conspiracy.
  • The conspiracy aims to eliminate fricatives from the child's phonetic inventory.
  • Contextual restrictions on repairs were linked to early developmental prominence effects.

Conclusions:

  • Optimality Theory effectively explains complex phonological conspiracies in child speech.
  • Developmental prominence effects play a role in the manifestation of specific phonological repairs.
  • The findings have implications for understanding and treating phonological delays.