Which of the following refers to an artifact that occurs when participants' expectations about what effect an experimental manipulation is supposed to have influences the dependent measure independently of the actual effect of the manipulation?
A) Experimental impact
B) Experimental realism
C) Placebo effect
D) Attrition

Question

Quizplus · Accepted Answer

The placebo effect refers to changes in participants' behavior, feelings, or physiology due to their expectations about what effect an experimental manipulation is supposed to have, rather than the actual effect of the manipulation itself. This can occur when participants have beliefs about the expected outcome of an experiment that influence the dependent measures independently of the experimental manipulation.

Which of the Following Refers to an Artifact That Occurs