Placebo effects are
A) the effects that volunteer bias has on the outcomes of experiments.
B) the effects the independent variable has on participants' behavior.
C) changes in the dependent variable brought about by manipulating the independent variable.
D) changes brought about in participants' behavior when they think they are receiving a treatment but they are actually are in a non-treatment condition.

Question

Quizplus · Accepted Answer

Placebo effects are changes in participants' behavior that occur when they think they are receiving a treatment, but they are actually in a non-treatment condition. These effects occur because participants' expectations and beliefs about the treatment influence their behavior, even when the treatment itself does not have any active ingredients or effects. The other options listed do not accurately describe placebo effects.

Placebo Effects Are