What are the two types of designs used to introduce the correlation in correlated-groups designs?
A) Within-subjects designs and matched-subjects designs.
B) Between-subjects designs and matched-subjects designs.
C) Randomized-subjects designs and matched-subjects designs.
D) Between-subjects designs and within-subjects designs.
Question 2
In within-subjects designs,
A) each participant serves as his or her own control.
B) the control group is matched with the experimental group.
C) each participant is exposed to one level of the independent variable.
D) each participant is randomly assigned to either the experimental group or the control group.