Central auditory processing disorder in school-aged children: a critical review

Area of Science:

• Neuroscience
• Developmental Psychology
• Speech and Hearing Sciences

Background:

• Central Auditory Processing Disorder (CAPD) is often assumed to underlie learning disabilities in children.
• The diagnostic validity of CAPD is questioned due to a lack of empirical evidence for modality-specific auditory deficits.

Purpose of the Study:

• To examine the modality specificity of perceptual dysfunctions in school-aged children with reading, language, and attention disorders.
• To address the scarcity of research on modality-specific auditory-perceptual dysfunction.

Main Methods:

• Review of existing literature on CAPD and modality specificity.
• Analysis of diagnostic frameworks and their impact on sensitivity versus specificity.
• Proposal for multimodal perceptual testing to clarify the nature of CAPD.

Main Results:

• Convincing empirical evidence for auditory-specific perceptual deficits in CAPD is scarce.
• Current diagnostic approaches may prioritize sensitivity over specificity, hindering validation.
• The "true" nature of CAPD remains unclear due to limited research.

Conclusions:

• Demonstrating modality specificity is crucial for differentiating CAPD from supramodal disorders.
• Multimodal perceptual testing is a recommended approach to investigate CAPD further.
• More research is needed to validate CAPD as a distinct diagnostic label.