Final answer:
Behavioral Audiometry is the methodology used to subjectively test the hearing of a child with a development age of 6 or 7 months. It requires a subjective response from the child each time a sound is heard, and the results are a direct measure of hearing sensitivity.
Step-by-step explanation:
The methodology used to subjectively test the hearing of a child with a development age of 6 or 7 months is called Behavioral Audiometry. This technique requires a subjective response from the child each time a sound is heard, and the results are a direct measure of hearing sensitivity. It is a commonly used method in pediatric audiology.
During the test, the child wears headphones or ear inserts and is presented with sounds of different frequencies and intensities. Each time the child hears a sound, they may be trained to turn their head, look for a toy, or perform a specific action, indicating that they heard the sound. The responses are carefully observed and recorded by the audiologist.
It is important to note that Behavioral Audiometry may not be suitable for all children, particularly those with developmental delays or disabilities that prevent them from reliably responding to sounds. In such cases, other objective hearing tests like Auditory Brainstem Response (ABR) may be used.