Unraveling phonological conspiracies: A case study.

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.