A new anti-depressant is being tested in a study in which neither the patient nor the physician knows whether a patient is getting the drug or the placebo. However, due to the reported side effects, a questionnaire given after the data are collected reveals the 85% of participants and patients were correct in identifying whether they were in the experimental or control condition. Contrary to design expectations, the experiment was not ________.

Question

Quizplus · Accepted Answer

The study was not double-blind because both patients and physicians were able to accurately identify whether the patient was receiving the experimental drug or the placebo. The fact that the study was not double-blind may have skewed the results and made it difficult to determine the true effectiveness of the anti-depressant.

A New Anti-Depressant Is Being Tested in a Study in Which