The nondeviant nature of deviant phonological systems

Area of Science:

• Linguistics
• Phonology
• Child Language Acquisition

Background:

• Limited research exists on children's defective speech beyond basic phonetic representation.
• Previous analyses of phonological disorders often lack detailed examination of underlying phonemic structures and rules.
• The Lorentz (1976) study of a child named Joe provided an exceptional analysis but relied on questionable morphosyntactic justification.

Purpose of the Study:

• To reanalyze the phonological data of a child with a phonological disorder using a syllable-based model.
• To investigate the role of syllable structure in conditioning phonological rules in child speech.
• To discuss key issues in generative phonology, including rule naturalness, ordering, feature systems, and the function of the syllable.

Main Methods:

• Reanalysis of existing phonological data from a child (Joe) using Kahn's (1976) syllable-based generative phonology model.
• Examination of phonological rule application based on the presence or absence of internal syllable boundaries in polysyllabic words.
• Comparative analysis of the child's phonological system against linguistic parameters and adult norms.

Main Results:

• The child's phonological rules were found to be exclusively conditioned by syllable structure.
• Rule application was dependent on the presence of internal syllable boundaries within words.
• The study identified specific issues related to rule naturalness, ordering, feature representation, and the role of the syllable.

Conclusions:

• The child's phonological system adheres to 'normal' linguistic parameters concerning rule conditioning.
• Despite a linguistically 'normal' system, the child's speech output deviates significantly from adult norms.
• Syllable structure plays a crucial, exclusively conditioning role in the phonological rules of children with speech disorders.