Kali Is in an Experiment Where Subjects Are Given a Drug

Multiple Choice

Kali is in an experiment where subjects are given a drug that is supposed to make them feel less depressed. She starts to feel better even though she is in the control group. This is known as the:

A) Self-confirming bias.
B) Placebo effect.
C) Representativeness heuristic.
D) Equipoise principal.