Phonological Development in 3-6-Year-Old Mandarin-Speaking Children with Autism, Developmental Delays, and Typical...

Area of Science:

• Developmental Psychology
• Linguistics
• Speech-Language Pathology

Background:

• Phonological development in children with autism spectrum disorder (ASD) lacks consistent research findings across different language groups.
• Systematic investigation is needed to understand the specific phonological characteristics in Mandarin-speaking children with ASD.

Purpose of the Study:

• To systematically investigate the phonological development characteristics of 3-6-year-old Mandarin-speaking children with ASD.
• To compare the phonological features of children with ASD to those with developmental disorders (DD) and typically developing (TD) children.

Main Methods:

• Analysis of 10-minute speech samples from 21 children with ASD, 18 with DD, and 15 TD children during semi-structured parent-child free play.
• Assessment of Mandarin phonological features, including initial and final inventories, and syllable structure complexity and diversity.

Main Results:

• Children with ASD exhibited smaller initial and final phoneme inventories compared to TD children.
• ASD children used a higher proportion of simpler syllable structures (e.g., V1, V1V2C) and a lower proportion of complex structures (e.g., V1V2V3, CV1C, CV1V2C) than TD children.
• While ASD and DD groups showed similar overall language abilities, detailed differences in initial, syllable complexity, and diversity were observed.

Conclusions:

• The gap in language abilities between TD and ASD children widens with age, affecting phonological complexity and diversity.
• Children with ASD demonstrate distinct phonological development patterns compared to both TD children and children with DD.
• Further research is warranted to explore the nuances of phonological development in children with ASD across diverse linguistic backgrounds.