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It has been proved that early identification and rehabilitation of children with hearing loss has good prognosis. Therefore, there is a need for audiologist to assess ear and frequency specific information reliably, to select and fit appropriate amplification devices.
BEHAVIOURAL OBSERVATION AUDIOMETRY(BOA):
BOA is a test used for infants less than 6 months of age to observe their hearing behaviour such as startle, head turn, eyeblink, changes in respiratory pattern, cessation of activity in response to the sound. For the BOA testing, two clinician are required. One to handle test equipment, other one to monitor baby's behavioural response.
VISUAL REINFORCEMENT AUDIOMETRY(VRA):
VRA is administered on children as young as 5 month and is typically recommended up to roughly 24 months of age. It is the hearing measurement using a conditioned localization response and visual reinforcement. It has two phases, conditioning phase - where baby is conditioned to respond to the sound by looking at the visual reinforcer and testing phase- where actual threshold is considered once the baby is conditioned.
TANGIBLE REINFORCEMENT OPERANT CONDITIONING AUDIOMETRY (TROCA):
TROCA is a test approach originally described for the use with difficult to test patients, such as those with developmental disabilities. It is useful with children between 2 and 4 years of age. child is required to push a response button or make another simple motor response upon hearing a tone and tangible reinforcement is provided instead of visual.
CONDITION PLAY AUDIOMETRY(CPA):
Children between about 2 and 5 years of age are often appropriate for the testing, CPA uses toys to direct the child’s attention on the listening task and turns it in to a game. The first part of CPA involves conditioning the child (eg: to drop the ball in the bucket every time hear the sound). Once the child is comfortable with the task, testing phase is began where actual thresholds of the child is considered.