Hefner Wants to Test the Effects of Viagra on Sexual

question 85

Multiple Choice

Hefner wants to test the effects of Viagra on sexual desire. Dr. Hefner's research assistant (who is unaware of what the study is testing) randomly gives 50 males the drug while 50 males receive a placebo. (The study subjects are also unaware of the treatment that they are getting.) This would be described as a

• A) correlational study.
• B) double-blind study.
• C) study with no control group.
• D) study with two independent variables.
• E) study that would be difficult to replicate.

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