Question
Difficulty: easy. Skill: recognize. Type: experimental design critique.
A BCBA is evaluating whether an intervention changed grabbing preferred items. A second program change began during the same week. Which concern best reflects single-case design data critique and interpretation? The case file includes 4 recent sessions, 5 implementers, and 1 setting.
ARely on care team's report alone and stop collecting direct evidence
BChange the intervention immediately based on the concern alone
CInterpret level, trend, variability, overlap, and integrity data before changing the plan in relation to adolescent's grabbing preferred itemsCorrect answer
DContinue unchanged and ignore the new contextual information
Explanation
Answer CThe clue is the combination of ABC data from three outings, grabbing preferred items, and the required task: Single-case design data critique and interpretation. The case file includes 4 recent sessions, 5 implementers, and 1 setting. Interpret level, trend, variability, overlap, and integrity data before changing the plan in relation to adolescent's grabbing preferred items is best because it answers that clue through visual analysis and data-based decisions instead of treating the scenario as a generic behavior problem. On exam items like this, name the decision point first, then eliminate options that rely on one report, a label, a familiar protocol, or an action that skips the relevant data check.
Why this question is hard
ClueKey scenario clueThe clue is the combination of ABC data from three outings, grabbing preferred items, and the required task: Single-case design data critique and interpretation. The case file includes 4 recent sessions, 5 implementers, and 1 setting.
TrapCommon trapStakeholder input matters, but direct data, context, and integrity checks are still needed for a defensible answer.
NextIf you missed it, review Visual analysis and data-based decisionsThen answer a few related scenarios before moving back to broad practice.
Why the other choices are weaker
AChoice AStakeholder input matters, but direct data, context, and integrity checks are still needed for a defensible answer.
BChoice BThis is weaker because it skips the assessment, integrity, or decision rule needed before changing procedures.
DChoice DIgnoring relevant data or context prevents a defensible behavior-analytic decision.
Study tags
Visual analysis and data-based decisionsSingle-case design data critique and interpretationleveltrend
Related concept pages
Turn this into a study plan
If this question felt difficult, practice a short drill from Experimental Design and use the review page to turn missed items into a weak-area plan.
Practice interactively
Try more BCBA scenario questions in the interactive practice mode, then use review tools to track missed domains and flagged items.