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QUESTION
Which of the following studies uses a matched-subjects design?
Which of the following studies uses a matched-subjects design?a. A group of twins is tested for visual acuity on one day and then tested again the following day after receiving a drug.b. A sample of children is tested for vocabulary skills at age six and then again at age ten.c. Participants are assigned to one of two treatment groups so that each participant in one group has the same IQ as a participant in the other group.d. None of the other options is a matched-subjects design.
Which of the following studies uses a matched-subjects design?a. A group of twins is tested for visual acuity on one day and then tested again the following day afterreceiving a drug.b. A sample...