Introduction The principal advantage of using a within-subjects design when participants vary greatly on the dependent variable is that it
A)decreases individual differences.
B)decreases the risk of Type 1 error.
C)increases statistical power.
D)reduces the risk of confounding by carryover effects.

Question

Quizplus · Accepted Answer

With a within-subjects design, each participant serves as their own control, and the variability within each participant is accounted for. This decreases individual differences and increases statistical power, making it easier to detect significant effects. Additionally, the design reduces the risk of confounding by carryover effects because each participant experiences all conditions, and any carryover effects will affect all conditions equally, making it easier to distinguish their effects from those of the independent variable. However, using a within-subjects design can increase the risk of Type 1 error, as each participant's data is used in multiple conditions, making it important to carefully control for multiple comparisons.

Introduction the Principal Advantage of Using a Within-Subjects Design When