How should a researcher guard against diffusion of treatment?
A) Be sure to randomly assign participants to groups.
B) Do not choose participants who have very high or very low scores.
C) Check experimental equipment every day.
D) Tell participants not to talk to others about the experiment.

Question

Quizplus · Accepted Answer

Telling participants not to talk to others about the experiment helps prevent them from sharing information that could influence the behavior of other participants, thus guarding against diffusion of treatment.

How Should a Researcher Guard Against Diffusion of Treatment