When testing a new drug,researchers control for a placebo effect by using

A) neurogenesis.
B) rTMS.
C) the double-blind procedure.
D) deep brain stimulation.

Double-Blind Procedure

An experimental method in which both the participants and the researchers are unaware of who is receiving the treatment versus the control, to prevent bias.

Placebo Effect

The placebo effect is a psychological phenomenon where individuals experience a perceived improvement in their condition after receiving a treatment with no therapeutic value.