Experiments typically employ a(n) ________ group, participants who are not subjected to the experiment's manipulation of variables.

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The control group serves as a baseline for comparison with the experimental group, which undergoes manipulation of variables. This helps to rule out alternative explanations for any observed effects and increases the accuracy and validity of the experiment. A blind group involves concealing information from participants or researchers to avoid biased or influenced results, an anonymous group protects the privacy of participants, a stratified group involves dividing the population into subgroups with similar characteristics for more representative sampling, and a placebo group receives an inactive or fake treatment to control for the effects of expectation or belief. None of these options necessarily involve withholding manipulation from a group of participants.

Experiments Typically Employ A(n) ________ Group, Participants Who Are Not