Miriam is in 2nd grade. When her classmates are asked who she is, they have difficulty remembering her and find it hard describing her. She is neither liked nor disliked by her classmates, but for the most part, goes unnoticed

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.

Under what circumstances is construct validation essential?

a. when the test has some type of novel approach b. when no criterion or universe of content is accepted as adequate to define the quality c. when insurance reimbursement is going to be sought d. when a single, large-scale validation study is to be performed