A researcher assigns the first fifty people who sign up to participate in a study to the experimental condition and the next fifty to the control condition.Why would the interpretations drawn from the study be severely limited?
A)A within-subjects design should have been implemented.
B)Random assignment to conditions was not implemented.
C)A greater number of participants should have been selected.
D)Another control condition should have been included.

Question

Quizplus · Accepted Answer

Without random assignment to conditions, there is a significant risk of selection bias, which can lead to differences between the groups that cannot be attributed to the independent variable being studied. Therefore, the interpretations drawn from the study would be severely limited.

A Researcher Assigns the First Fifty People Who Sign Up