The notion that music can influence mood is widely held. Several psychologists decide to put this idea to an experimental test. What would happen to the participants in the control and experimental groups?

a) Both the control and experimental groups would hear the same type of music.
b) The control group would hear no music; the experimental group would listen to music.
c) Both groups would be asked to make ratings of the songs they typically hear on the radio.
d) The control group would give ratings of their mood; the experimental group would select music they want to hear.

ANS: b