Why do researchers randomly assign participants to conditions?
A) to control extraneous variables
B) to ensure that they find a strong statistical relationship between the independent variable and the dependent variable
C) to discover whether there is a placebo effect
D) to avoid fatigue effects

Question

Quizplus · Accepted Answer

Randomly assigning participants to conditions helps control for extraneous variables that could affect the outcome of the study. This allows researchers to be more confident that any observed effects are due to the independent variable and not other factors.

Why Do Researchers Randomly Assign Participants to Conditions