Why does using a correlated-groups design reduce error variability?
A) The independent variable is stronger in a correlated-groups design than in a between-subjects design.
B) The dependent variable is stronger in a correlated-groups design than in a between-subjects design.
C) The correlated-groups design is better suited to multiple independent variables compared to the between-subjects design.
D) Error variability due to individual differences in participants is decreased in a correlated-groups design.

Question

Quizplus · Accepted Answer

In a correlated-groups design, the same participants are used in all conditions, which reduces error variability due to individual differences, as each participant serves as their own control.

Why Does Using a Correlated-Groups Design Reduce Error Variability