The two most important techniques for eliminating potential rival hypotheses are
A) random assignment of participants and use of control groups.
B) random assignment of participants and use of pretests.
C) use of pretests and control groups.
D) random selection of participants and random assignment of participants.

Question

Quizplus · Accepted Answer

Random assignment of participants and the use of control groups are crucial for eliminating potential rival hypotheses by ensuring that any differences observed between groups in an experiment can be attributed to the manipulation of the independent variable rather than to preexisting differences between the groups.

The Two Most Important Techniques for Eliminating Potential Rival Hypotheses