A researcher asks individuals to participate in an experiment that causes arm muscle strain. The participants are instructed to use a provided muscle rub after the activity. One group gets a rub with active ingredients to reduce pain, whereas the other group gets a ____________ without active ingredients.

Question

Quizplus · Accepted Answer

A placebo is a non-active substance, such as a sugar pill or in this case, a muscle rub without active ingredients, that is given to the control group in an experiment. It is used as a comparison group to assess the effects of the treatment group receiving the muscle rub with active ingredients.

A Researcher Asks Individuals to Participate in an Experiment That