In Dr. Turgrove's experiment, he includes a control group that receives a placebo. This type of research design is meant to control which confound?

Name: In Dr. Turgrove's experiment, he includes a control group that receives a placebo. This type of research design is meant to control which confound?
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A placebo is used to control for participants' expectations, ensuring that any effects observed are due to the independent variable and not the participants' belief in the treatment.

In Dr Turgrove's Experiment, He Includes a Control Group That Receives