Professor Aaron finds that when he smiles and makes eye contact with Jeanne, she becomes more responsive to his questions. He tries the same behavior on David, Chris, and Brendon and finds that it also influences their responses to his questions. What type of single-case design did Professor Aaron employ?

Question options:

A. Across subjects multiple-baseline design

B. Across situations multiple-baseline design

C. Across behaviors multiple-baseline design

D. Across subjects ABA design

A. Across subjects multiple-baseline design

Explanation:

In the multiple-baseline design, behavior is measured across either multiple individuals, behaviors, or settings.

For the multiple-baseline-across-subjects design, the same behavior is observed and studied for multiple individuals as is lllustrated above.

By gathering data from many or more than one subject or instances inferences can be more informed and be made about the likeliness that the measured trait generalizes to a greater population.