Board Certified Behavior Analyst (BCBA) — Question 27

This graph BEST exemplifies:

Answer options

• A. clear demonstration of an effective intervention.
• B. a decrease in variability due to the intervention.
• C. a change in the level between baseline and intervention phases.
• D. a change in the trend between baseline and intervention phases.

Correct answer: C

Explanation

The correct answer is C because it highlights the change in levels observed when comparing the baseline and intervention phases. Options A and B do not specifically address the level change, while D focuses on trend changes rather than level changes.