Advantages of a Within-Subjects Design A researcher has a better chance of detecting the effect of the independent variable using a within-subjects design because
A)each subject goes through each treatment condition more than once.
B)each subject serves as his or her own control.
C)the experimenter can more precisely manipulate the independent variable than in a between-subjects design.
D)the experimenter compares subjects against each other.

Question

Quizplus · Accepted Answer

In a within-subjects design, each subject serves as his or her own control, which decreases variability and increases the chance of detecting the effect of the independent variable. Each subject goes through each treatment condition, which also offers an advantage of having a smaller sample size and higher statistical power. The experimenter can manipulate the independent variable precisely in both within-subjects and between-subjects designs. The experimenter comparing subjects against each other is not a characteristic or advantage of within-subjects design.

Advantages of a Within-Subjects Design a Researcher Has a Better