At Westonci.ca, we connect you with experts who provide detailed answers to your most pressing questions. Start exploring now! Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.

A researcher is interested in examining the effect of caffeine on driving performance. In order to rule out a change in behavior brought about because of participants' expectations about the effect of caffeine, the researcher should include which of the following?
A) A balanced placebo design.
B) Experimenter bias.
C) A manipulation check.
D) A demand characteristic.