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Which of the following research designs includes both an intervention and randomization?

Which of the following research designs includes both an intervention and randomization?

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Answer #1

Classic experimental design or pretest-posttest control group method

The pretest-posttest control group method is when participants are randomly assigned to either the intervention (experimental) or a non-intervention (control) group. However, those participants assigned to the control group may receive a different intervention other than the one under study. Pretests are given to both groups at the same time to assess their similarities and differences. Posttests are given to both groups to determine the effect of the intervention.

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