Two groups of people are given a drug that they are told will make them drowsy.However,only one group actually receives this drug,while the other group secretly receives a sugar pill.Strangely,both groups report feeling very tired 30 minutes later.The group receiving the sugar pill is said to be experiencing the

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The placebo effect refers to the phenomenon in which an inactive substance or treatment (such as a sugar pill) can produce a real response or change in behavior, such as feeling drowsy. It is likely that the group receiving the sugar pill is experiencing the placebo effect, while the other group that actually received the drug is experiencing the intended experimental effect.

Two Groups of People Are Given a Drug That They