The NHS on Auditory Processing Disorder :
https://www.nhs.uk/conditions/auditory- ... -disorder/
Sections on testing and treatment :
Testing for auditory processing disorder
Normal hearing tests aren't very effective at diagnosing APD because they're usually carried out in a quiet room without distractions and don't test the ability to hear in a normal day-to-day listening environment.
More complex tests are needed to test the ability to hear with different levels of background noise, poor quality speech, people talking with different accents, and people talking quickly.
Specific tests that may be used to help diagnose APD include:
tests to check your ability to hear speech with different levels of background noise.
sound pattern recognition tests.
tests to detect subtle changes in sound – the results will be compared with those of similar-aged children.
electrode tests – you wear headphones to listen to sounds and electrodes placed on your head measure your brain's response
speech and language assessments.
cognitive assessments that test your thinking.
Treatments for auditory processing disorder
There are a number of strategies that can help people with APD.
Auditory training involves using special activities to help train your brain to analyse sound better. You can do this on your own, with the help of an audiologist, or by using a computer programme or CD.
It involves a range of tasks, such as identifying sounds and guessing where they're coming from, or trying to focus on specific sounds when there's some slight background noise.
The tasks can be adapted for people of different ages, with children often learning through games or by reading with their parents.
Secondary source ... Contact ... mentions children but expands beyond what's in the NHS link :
https://contact.org.uk/advice-and-suppo ... -disorder/
I trust the above will prove to be some use ?