You Have Designed an Experiment to Test a New Drug

Multiple Choice

You have designed an experiment to test a new drug. You prepare the injection doses of the drug and a placebo and label them with different alphabet letters. Then, you hire research assistants to give the injections and to collect data from the participants. These research assistants as well as the participants will not know which injection is the drug or which is the placebo or whether a participant is in the experimental or the control group. You have

A) created a placebo effect.
B) designed a single-blind experiment.
C) designed a double-blind experiment.
D) created a self-fulfilling prophecy.