All but which of the following are examples of double-blind studies?
A) medical experiments where a new drug is tested; one group gets the new drug, the other gets a placebo, and the researcher does not know who got which drug
B) domestic violence studies where intervention is designed to reduce repeat offenses by focusing upon victim strategies when the victim does not know whether he or she is in the control or experimental group
C) any study where the researchers and the subjects do not know whether they are in the experimental or control groups
D) any study where the researchers know who is in the experimental and control groups but promise not to tell the subjects

Question

Quizplus · Accepted Answer

Double-blind studies are characterized by neither the participants nor the researchers knowing who is receiving the experimental treatment and who is receiving a placebo or control condition. Choices A, B, and C all describe scenarios where both parties are unaware of the group assignments, fitting the definition of a double-blind study. Choice D, however, describes a situation where the researchers are aware of the group assignments, which does not align with the definition of a double-blind study.

All but Which of the Following Are Examples of Double-Blind