Answer:
The researcher is trying to demonstrate a scientific experiment called <u><em>Dichotic Listening</em></u>
Explanation:
<em>Dichotic listening</em> is the listening to different acoustic events presented to each ear simultaneously. Most commonly, <em>the acoustic signals are speech, such as digits, words, consonant-vowels, or sentences.</em>
This test is used to carry out behavoural test of <em>Central auditory processing</em> which help to determine which ear (left ear or right ear ) has the <em>best advantage in listening</em>.
Answer:
The human development index parameters are life expectancy, years of schooling, infant mortality rate, maternity mortality rate, people below the poverty line, and per capita income.
