In true experiments people are randomly divided into groups.Why is this done?
A) To get a diverse, representative sample of people to participate in the experiment
B) To find out if there are correlations between groups
C) To gain control over the research so that it can become a quasi-experiment
D) To try to make sure the groups are comparable before the intervention is performed

Question

Quizplus · Accepted Answer

Randomly dividing people into groups helps to ensure that the groups are comparable before any intervention is performed. This helps to minimize the effects of extraneous variables and increases the internal validity of the experiment. Options A and B are not entirely relevant to the purpose of randomly dividing people into groups, while option C is incorrect as a quasi-experiment does not have random assignment to groups.

In True Experiments People Are Randomly Divided into Groups