Which of the following conditions would preclude the use of a correlated-groups design?
A)small number of subjects
B)the experimental manipulation has known carry-over effects
C)the existence of individual differences
D)the presence of disturbance variables

Question

Quizplus · Accepted Answer

A correlated-groups design assumes that the groups being compared are independent of each other, meaning that any effect observed is solely due to the experimental manipulation. If there are known carry-over effects from the manipulation, it is not appropriate to use a correlated-groups design. The other options - small number of subjects, existence of individual differences, and presence of disturbance variables - do not preclude the use of a correlated-groups design as long as appropriate statistical techniques are used to account for them.

Which of the Following Conditions Would Preclude the Use of a Correlated-Groups