In 1989,a Group of Researchers at the National Institute of Mental

Multiple Choice

In 1989,a group of researchers at the National Institute of Mental Health conducted a study involving the relationship between ____________,which is an example of the ____________ method.

A) PMS and self-esteem;clinical
B) variation in moods and the time of year;survey
C) sexual practices and religious upbringing;naturalistic observation.
D) aggression and alcohol use;formal experiment