In drug-treatment studies,double-blind procedures minimize outcome differences between experimental and control conditions that could be attributed to

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Double-blind procedures are designed to minimize the placebo effect, which is the phenomenon where participants improve simply because they believe they are receiving a beneficial treatment. By keeping both the participant and the experimenter unaware of which condition the participant is in (experimental or control), the researcher can reduce the influence of the placebo effect on the outcome of the study. Replication, operational definitions, and random sampling are not directly related to the use of double-blind procedures in drug-treatment studies.

In Drug-Treatment Studies,double-Blind Procedures Minimize Outcome Differences Between Experimental and Control