Patricia Is Told by the Experimenter That the Lights in the Experimental

Multiple Choice

Patricia is told by the experimenter that the lights in the experimental room may put people in a positive mood. Although the lights do not actually have any effect on mood, Patricia nevertheless begins to feel a positive mood. The change in mood probably represents which of the following?

A) A pilot test effect
B) A manipulation check
C) A placebo effect
D) A baseline mood effect