Assessment of auditory processing disorder in children using an adaptive filtered speech test

Area of Science:

• Audiology
• Neuroscience
• Speech-language pathology

Background:

• Auditory Processing Disorder (APD) affects speech comprehension, particularly in noisy environments.
• Traditional filtered words tests (FWTs) for APD have limitations, including ceiling and floor effects due to constant low-pass filtering.
• The University of Canterbury Adaptive Speech Test-Filtered Words (UCAST-FW) was developed to overcome these limitations using an adaptive procedure.

Purpose of the Study:

• To evaluate the efficacy of the UCAST-FW in distinguishing between children with and without APD.
• To assess the sensitivity and efficiency of the UCAST-FW compared to constant-level FWTs.

Main Methods:

• The UCAST-FW was administered to school-aged children.
• Participants included 15 children diagnosed with APD and 10 age-matched controls with no history of listening difficulties.

Main Results:

• A significant difference was observed in UCAST-FW results between children with APD and those with normal auditory processing.
• The UCAST-FW demonstrated higher sensitivity in discriminating between the two groups.

Conclusions:

• The UCAST-FW shows potential as a more sensitive and accurate tool for diagnosing APD in children.
• This adaptive test may offer improved diagnostic capabilities over existing constant-level filtered words tests.