The balanced placebo design begins to be ineffective at the following BAC level: __________.

Question

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The balanced placebo design is a study design used to examine the effects of a drug on behavior by manipulating participants' expectations about whether they have received the drug or a placebo. It is effective as long as the participants' expectations are manipulated successfully. However, at BAC levels of 0.035% and higher, participants may be able to detect the presence of alcohol in their system, which can interfere with the manipulation of expectations and compromise the validity of the study. Therefore, the balanced placebo design begins to be ineffective at a BAC level of 0.035%.

The Balanced Placebo Design Begins to Be Ineffective at the Following