In a study in which neither the patient nor the physician knew whether a patient was getting the drug or the placebo, 85% of participants and patients correctly identified whether they were in the experimental or control condition. Contrary to design expectations, the experiment was not ________.
A) effective
B) reliable
C) correlational
D) double blind

Question

Quizplus · Accepted Answer

The experiment was not double blind because both the participants and the physicians were able to correctly identify whether they were in the experimental or control group, which defeats the purpose of a double-blind study.

In a Study in Which Neither the Patient nor the Physician