Definition of Auditory Processing Disorder (APD)

The American Speech Language Hearing Association (2005) and the American Academy of Audiology (2010) define APD officially as follows:

APD refers to difficulties in the perceptual  processing of auditory information in the central nervous system and the neurobiologic activity that underlies that processing and gives rise to the electrophysiologic auditory potentials.”


The definition of the Committee of UK Medical Professionals Steering the UK Auditory Processing Disorder Research Program is as follows:

"APD results from impaired neural function and is characterised by poor recognition, discrimination, separation, grouping, localisation, or ordering of speech sounds. It does not solely result from a deficit in general attention, language or other cognitive processes."