Introduction All of the following questions invite a within-subjects approach except:
A)Do additional reviews of class notes yield better exam scores?
B)Do subjects prefer white wines when they are served chilled or at room temperature?
C)Do subjects with an internal locus of control learn to slow their heart rate more easily than those with an external locus of control?
D)Do you improve each time you take the same GRE practice test?

Question

Quizplus · Accepted Answer

Choices A, B, and D involve comparing the same subjects under different conditions, which is characteristic of a within-subjects design. Choice C compares two different groups of subjects (those with an internal locus of control vs. those with an external locus of control), which suggests a between-subjects design.

Introduction All of the Following Questions Invite a Within-Subjects Approach