A matched-subjects design often has the power of a within-subjects design while avoiding the problem(s)of ___.
A)carry-over effects
B)subject economy
C)individual differences
D)all of these

Question

Quizplus · Accepted Answer

A matched-subjects design selects pairs of participants who are similar on relevant characteristics, such as age or IQ, and assigns one member of each pair to the treatment group and the other to the control group. By doing so, the design controls for individual differences between the groups, which is a problem with between-subjects designs. The design also avoids carry-over effects because each participant only receives one level of the independent variable. However, subject economy is not a problem with matched-subjects design as it requires the same number of participants as a between-subjects design.

A Matched-Subjects Design Often Has the Power of a Within-Subjects