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  1. What is the "placebo effect"?

 

a. The physical response to a medication that contains active ingredients for treating a specific condition.

b. The worsening of symptoms due to negative beliefs or expectations.

c. When a person's physical or mental health appears to improve after taking a placebo or 'dummy' treatment.​

d. The side effects experienced after taking a medication containing active agents such as an actual vaccine..

 

2. Why do we sometimes use a placebo in a randomized controlled trial?

 

a. To deliberately worsen the condition of participants in the control group.

b. Because we would not want a treatment, such as a vaccine, to appear to "work" (in this case to ward off the disease) if it we were just measuring a "placebo effect."

c. To confirm that all participants have the same medical condition.

d. To increase the cost and complexity of the trial.

Expert Solution
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Step 1: Placebo effect :-
  • Placebo word comes from Latin language and it means  'I will please'. One research study finds that 75% effectiveness of the anti depressants drugs is due to this placebo effect. 
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