To control for history effects in an interrupted time-series study, a researcher decides to use an A-B-A format in her study. This means that she
A) increases the number of testing intervals in her study.
B) includes a comparison group that does not receive the treatment.
C) takes away the treatment to determine if behavior reverts back to baseline.
D) adds another treatment condition to the study.

Question

Quizplus · Accepted Answer

The A-B-A format involves introducing a treatment (B) and then removing it to see if the behavior returns to the baseline (A), helping to control for history effects.

To Control for History Effects in an Interrupted Time-Series Study