DrDré Is Very Interested in Infants' Reactions to Different Music

Multiple Choice

Dr.Dré is very interested in infants' reactions to different music styles.In order to study the phenomena,he built a special lab crib containing audio speakers.He then individually brings six-month-olds into the lab,places them in the crib,plays rap music,and watches each baby's reactions.Given this description,Dr.Dré appears to be using the _____ technique.

A) self-report investigation
B) naturalistic observation
C) structured observation
D) case study analysis