Random assignment of subjects to groups in an experiment is used to reduce the effects of
A)the independent variable.
B)the dependent variable.
C)experimenter bias.
D)extraneous variables.

Question

Quizplus · Accepted Answer

Random assignment of subjects to groups in an experiment is primarily used to ensure that each group is similar to the others in all respects except for the treatment being tested. This helps to reduce the effects of extraneous variables, which are variables other than the independent variable that could affect the outcome of the experiment.

Random Assignment of Subjects to Groups in an Experiment Is