The two basic elements of a true experimental design are
A) a control group and random allocation of subjects to conditions
B) a control group or a control condition and random allocation of subjects to groups
C) random selection of subjects and random allocation of subjects to conditions
D) random selection of subjects and each subject experiences every condition

Question

Quizplus · Accepted Answer

A true experimental design requires both a control group or condition to compare against the experimental condition, and random allocation of subjects to different groups to ensure that the groups are comparable and that the results are not due to pre-existing differences between participants.

The Two Basic Elements of a True Experimental Design Are