Diffusion is a threat to the _____ of a study.
A) variance
B) external validity
C) internal validity
D) statistical significance

Question

Quizplus · Accepted Answer

Diffusion occurs when information about the intervention or treatment leaks and affects the control group, leading to a decrease in the difference between groups. This threatens the internal validity of the study as it may lead to an overestimation of the treatment effect.

Diffusion Is a Threat to the _____ of a Study