If you use a paired samples t-test:
A)The same participants take part in both experimental conditions.
B)Other things being equal, you do not need as many participants as you would for an independent samples design.
C)All of these are correct.
D)There ought to be less unsystematic variance compared to the independent t-test.

Question

Quizplus · Accepted Answer

All three options are correct. In a paired samples t-test, the same participants take part in both conditions, which reduces individual differences and hence unsystematic variance. As a result, paired samples designs typically require fewer participants than independent samples designs.

If You Use a Paired Samples T-Test