Answer:
The researcher is trying to demonstrate a scientific experiment called Dichotic  Listening
Explanation:
Dichotic listening is the listening to different acoustic events presented to each ear simultaneously. Most commonly, the acoustic signals are speech, such as digits, words, consonant-vowels, or sentences.
This test is used to carry out behavoural test of Central auditory processing which help to determine which ear (left ear or right ear ) has the best advantage in listening.
