Phil is a participant in a study designed to examine the effects of taking a new protein-containing product on muscle tissue development. Phil suspects he's in the experimental group, because he's certain his muscles are bigger and stronger as a result of taking the product supplied by the researchers. When the study is completed, Phil learns that he didn't receive the new source of protein. Phil thinks the researchers made a mistake-he's certain his muscle mass increased while he consumed the product. According to this information, Phil's belief that his physical condition improved while he participated in the study is an example of

Question

Quizplus · Accepted Answer

Phil's belief that the protein-containing product caused his muscles to grow, despite not actually receiving the product, is an example of the placebo effect. The placebo effect is the phenomenon where a person experiences an improvement in their condition or symptoms solely based on their belief that they are receiving an effective treatment, regardless of whether the treatment is actually effective or not.

Phil Is a Participant in a Study Designed to Examine