Dr. Perry can increase the chances that participants' characteristics will be equally distributed across the treatment groups by

Question

Quizplus · Accepted Answer

Randomly assigning participants to treatment groups can help ensure that participants' characteristics are equally distributed across the groups, as random assignment reduces the likelihood of systematic differences in participant characteristics between groups. Choice A could introduce bias if the experimenter is not careful or if the medical history is not a relevant factor in the study. Choice B is not a helpful strategy for balancing participant characteristics and can actually make it more difficult to interpret the results. Choice D is not a relevant strategy for balancing participant characteristics and may even introduce confounding variables.

Dr Perry Can Increase the Chances That Participants' Characteristics Will