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How do you test for APD
AUDITORY PROCESSING DISORDER (APD)
How do you test for APD?
When having a hearing test, children are usually asked to press a button or put a toy in a boat whenever they hear a `pip' sound.
This is usually done in a very quiet room and is a check that their ears are working well.
Children suspected of having APD will have at least one of these tests and, if the test shows that their ears are working well, they will also have a series of further tests for APD.
Different professionals use different ways of checking for APD.
The following are examples of the sort of methods that may be used:
Screening Questionnaire:
This is a quick check that can be given to just one child or to groups of children.
About 30 questions are asked, either on a computer screen or in a booklet.
The questions ask about the children's experience of everyday sounds
e.g: `If a friend or family member shouts your name, do you know who is calling without looking to see?'
All answers are scored and we use the overall score to help us decide if a child needs further testing.
APD listening Test:
This test is done in a hearing clinic.
The listening test is introduced as a computer game.
It is a bit like an odd-man-out game, and so is fun to do.
Most children enjoy playing this game.
The child sits in a very quiet room (called a sound booth) and listens to sounds played through headphones.
The headphones are specially made for children so they are not heavy and for very young children are designed to look interesting. The sounds are not loud or uncomfortable to listen to, but they may vary in:
Pitch (high or low)
Loudness
(quite loud or very soft)
Type of sound
The computer checks how the children respond to these sounds, and then produces an `auditory processing ability' score.
Each child's score is then compared with auditory processing scores from other children of the same age.
This helps us to know if the child is likely to have APD.
© MRC Institute of Hearing Research. April 2004
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