There are some advantages to using a repeated-measures design, such as:
A) Variability among participants is increased
B) Type I error variance is greater, increasing the probability of a significant difference
C) Fewer participants are needed
D) b and c

Question

Quizplus · Accepted Answer

Using a repeated-measures design requires fewer participants because each participant is measured multiple times, reducing the need for a large sample size. This can also increase statistical power. However, options A and B are not advantages of a repeated-measures design. Variability among participants can actually be decreased because each participant serves as their own control, and type I error variance is not necessarily greater.

There Are Some Advantages to Using a Repeated-Measures Design, Such