In a Study on Alcohol and Aggressive Behavior, Subjects Are

Multiple Choice

In a study on alcohol and aggressive behavior, subjects are randomly assigned to one of two groups. One group receives real alcohol while the other group receives tonic water
Which tastes identical to real alcohol. Although the researchers know which group got
The real alcohol, none of the subjects know. This study is designed as a ______ placebo-control study.

A) single-blind
B) double-blind
C) longitudinal
D) correlational