In a multiple-baseline design using two participants, what should a researcher do to ensure that any change in behavior is due to the treatment and not an outside factor?
A) Revert back to the baseline for one of the participants, but not the other
B) Introduce the treatment at a different time for each participant
C) Introduce the treatment immediately for both participants
D) Administer a questionnaire to ask participants about outside influences

Question

Quizplus · Accepted Answer

By introducing the treatment at a different time for each participant, the researcher can ensure that any changes in behavior are not due to an outside factor that affects both participants simultaneously. This allows the researcher to establish a cause-and-effect relationship between the treatment and the change in behavior for each individual participant separately.

In a Multiple-Baseline Design Using Two Participants, What Should a Researcher