Mill's method of difference provides the rationale for including a(n) __________ group in an experimental design.
A) treatment
B) experimental
C) control
D) expectancy control

Question

Quizplus · Accepted Answer

Mill's method of difference involves comparing a group that receives a treatment to a similar group that does not receive the treatment, with all other variables held constant. The similar group that does not receive the treatment is called the control group, and it allows researchers to isolate the effect of the treatment. Therefore, C (control) is the best choice for the blank.

Mill's Method of Difference Provides the Rationale for Including A(n)