About the APDQ

Introduction

The APDQ is a differential screening tool for children’s listening and learning which looks at the relative strength of a student's auditory processing, attention, and language skills. Authored by Dr. Brian O’Hara, a developmental-behavioral pediatrician in Honolulu, Hawaii, It has a 2016 copyright and is available for online use in 2023.

SEPTEMBER 2025 UPDATE

The auditory processing website is now 2 years old and has returned over 1500 reports to parents and professionals world-wide, with only 50 % to the USA.  A minor correction has been made to scoring protocols, favoring more reliable "rank percentiles" vs. "raw scale score" subtractions. This has resulted in a very minor 1% shift of single risk category assignments toward the "Combined APD and ADHD" designation.  

Using this questionnaire, parents and/or teachers of 7 to 18 year-olds rate a student’s skills on 50 key items which can be readily observed in daily life.

A REPORT is then made outlining the student’s relative risk profile for Hearing-Auditory Processing, Attention and Language-Learning disorders.

REPORT findings have been very useful in guiding clinical referrals, with screening accuracy reported in the 70 to 85% range. The questionnaire has been translated into seven foreign languages and recommend as a screening tool for APD by consensus panels from the American Academy of Audiology and the New Zealand Audiological Society.
 
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For more information, email us at: info@auditoryprocessing.org