Multiple Choice
Ginkgo Biloba is a herb that is thought to increase blood flow in the brain and enhance memory processes. In a carefully controlled study investigating this claim, young adults were assigned to one of three groups. Those in group 1 took a capsule containing 120 milligrams of ginkgo biloba once a day. Those in group 2 took a capsule that looked identical but was a fake. Those in group 3 did not take any capsules. The participants assigned to group 2 constituted the _____ in this study.
A) dependent variable
B) placebo group
C) extraneous group
D) out-of-control group
Correct Answer:
Verified
Correct Answer:
Verified
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