Developmental apraxia of speech: I. Descriptive and theoretical perspectives

Area of Science:

• Speech-Language Pathology
• Childhood Communication Disorders
• Linguistics

Background:

• Developmental apraxia of speech (DAS) is a proposed diagnosis for children with specific speech errors.
• Distinguishing DAS from developmental speech delay (SD) is crucial for accurate diagnosis and intervention.
• Existing research lacks clear differentiation between speech error profiles in DAS and SD.

Purpose of the Study:

• To determine if children with DAS exhibit distinct speech error patterns compared to children with SD.
• To identify reliable diagnostic markers for DAS.
• To explore the potential genetic basis and clinical implications of DAS.

Main Methods:

• Review of descriptive and theoretical perspectives on DAS and SD.
• Analysis of speech error profiles in a local ascertainment study of children with suspected DAS.
• Comparison of speech error characteristics between children with DAS and SD.

Main Results:

• Evidence suggests that speech error profiles can differentiate children with DAS from those with SD.
• The study supports the clinical utility of the term 'suspected DAS'.
• Specific speech error markers for DAS are yet to be definitively identified.

Conclusions:

• The findings support the clinical functionality of diagnosing suspected developmental apraxia of speech.
• Further research is needed to establish definitive diagnostic markers for DAS.
• Identifying a phenotype marker could illuminate potential genetic transmission of DAS.