How does randomization work to control extraneous variables?
A) The researcher uses different treatment sequences in order to control order effects.
B) The researcher ensures that all groups receive the extraneous variables to the same extent.
C) The researcher creates a constant or uniform condition to control an extraneous variable.
D) Because all participants have an equal likelihood of being in any group, any individual differences associated with the participants should be equally distributed across the groups.

Question

Quizplus · Accepted Answer

Randomization ensures that each participant has an equal chance of being assigned to any group, which helps distribute individual differences and extraneous variables evenly across all groups.

How Does Randomization Work to Control Extraneous Variables