The reason researchers use random assignment in an experiment is to
A) ensure group equivalence.
B) be fair to the participants.
C) be able to influence the results.
D) maximize the chance that they will get results that confirm their hypothesis.

Question

Quizplus · Accepted Answer

Random assignment is used in experiments to ensure that each participant has an equal chance of being assigned to any group. This process helps in achieving group equivalence at the start of the experiment, which is crucial for isolating the effect of the independent variable on the dependent variable without the confounding effects of pre-existing differences among participants.

The Reason Researchers Use Random Assignment in an Experiment Is