Which design is better, an A-B-A design or an A-B-A-B design?
A)A-B-A; it is more parsimonious
B)A-B-A; it has the ethical advantage of leaving subjects exactly where they started
C)A-B-A-B; it compares two different treatments
D)A-B-A-B; the treatment is evaluated twice

Question

Quizplus · Accepted Answer

An A-B-A-B design is better because it allows for the treatment to be evaluated twice, providing more robust evidence of the treatment's effect by demonstrating that changes in behavior are due to the treatment and not other factors.

Which Design Is Better, an A-B-A Design or an A-B-A-B