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A researcher is investigating the effectiveness of a new memory-enhancing drug. One group of participants is given the new drug, while a second group is given a placebo (a sugar pill with no active ingredients). Both groups are then asked to complete the same memory test. In this experiment, which of the following is the experimental group?
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A researcher is investigating the effectiveness of a new memory-enhancing drug. One group of participants is given the new drug, while a second group is given a placebo (a sugar pill with no active ingredients). Both groups are then asked to complete the same memory test. In this experiment, which of the following is the experimental group?
Which of the following best describes the experimental group in a research study?
A researcher wants to know whether drinking caffeinated coffee improves performance on a memory task. She recruits 40 participants and randomly assigns 20 of them to drink a cup of caffeinated coffee before completing the memory test. These 20 participants form the experimental group because they are the ones exposed to the manipulation of the independent variable.