In an ABAB design, the critical element for demonstrating that the treatment causes changes in behavior is a. the change from the initial baseline to the initial treatment phase. b. the return to...

In an ABAB design, the critical element for demonstrating that the treatment causes changes in behavior is

a. the change from the initial baseline to the initial treatment phase.

b. the return to baseline after the first treatment phase.

c. the second treatment phase that replicates the first.

d. the consistency of the pattern of scores obtained in the two baseline phases.