Phil Is a Participant in a Study Designed to Examine

question 40

Multiple Choice

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

• A)the placebo effect.
• B)an anecdotal report.
• C)human subject bias.
• D)participant fatigue.