Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
BERA is
brainstem evoked response
audiometry. It is used to assess loss of hearing in a child with any form of delayed speech.
This test is conducted to assess the degree of
hearing loss if at all it is there and as per the test results.
If a loss is there then hearing
aids and implants are very much in use now (some are even not seen easily like olden days). So, you need not fear about the test results.
For a child to be able to speak, he or she needs to know the different sounds used in any language and its development.
Testing for hearing is the very first assessment done for delayed speech and as there is no other issues with development of child this test should help you out.
As you say, your child listens to you but you are wondering why hearing test has been advised, it is because there are various degrees of hearing loss and unless it's not assessed, child can't be helped much.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Prafulla Srinivas