Do /s/-initial clusters imply CVCC sequences? Evidence from disordered speech.

Area of Science:

• Linguistics
• Developmental Phonology
• Speech-Language Pathology

Background:

• The acquisition of /s/-initial clusters in child speech is a complex area in developmental phonology.
• Pan and Snyder (2004) proposed a Government Phonology (GP) account, positing specific parameter settings ([+/-Branching Rhyme (BR)], [+/-Magic Empty Nucleus (MEN)]) for /s/-cluster production.
• GP theory predicts /s/-initial clusters are acquired only after branching rhymes (CVCC structures).

Purpose of the Study:

• To test Pan and Snyder's (2004) prediction regarding the acquisition order of /s/-initial clusters versus branching rhymes in children with phonological delays.
• To investigate the applicability of the Government Phonology (GP) framework to disordered speech acquisition.

Main Methods:

• Analysis of speech data from seven English-speaking children exhibiting phonological delays.
• Observational study focusing on the emergence of /s/-initial clusters and branching rhyme structures in the children's productions.

Main Results:

• The data from all seven children supported Pan and Snyder's prediction.
• No child acquired /s/-initial clusters prior to the acquisition of branching rhymes.
• The findings align with the Government Phonology (GP) framework's predictions for typical and disordered phonological development.

Conclusions:

• The study provides empirical support for the Government Phonology (GP) model's account of /s/-initial cluster acquisition in disordered speech.
• The findings suggest that phonological intervention targeting /s/-initial clusters should consider the developmental precedence of branching rhymes.
• Implications for speech-language pathology interventions are discussed, emphasizing a structured approach based on phonological principles.