Practice question
Selecting and Implementing Interventions

Intervention selection from assessment, evidence, preferences, and contextual fit: Least restrictive function-based intervention.

Original BCBA scenario practice question with answer explanation and wrong-choice notes.

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Question

Difficulty: medium. Skill: apply. Type: applied scenario.

The team is choosing an intervention for leaving the instructional area. Assessment and stakeholder feedback must be considered under intervention selection from assessment, evidence, preferences, and contextual fit. What should the BCBA prioritize? The case file includes 4 recent sessions, 4 implementers, and 2 settings.

A
Rely on caregiver's report alone and stop collecting direct evidence
B
Change the intervention immediately based on the concern alone
C
Select the least intrusive effective function-based intervention that fits assessment results and context in relation to learner's leaving the instructional area

Correct answer

D
Continue unchanged and ignore the new contextual information

Explanation

Answer C

The clue is the combination of four sessions of stable baseline data followed by two overlapping intervention points, leaving the instructional area, and the required task: Intervention selection from assessment, evidence, preferences, and contextual fit. The case file includes 4 recent sessions, 4 implementers, and 2 settings. Select the least intrusive effective function-based intervention that fits assessment results and context in relation to learner's leaving the instructional area is best because it answers that clue through least restrictive function-based intervention 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

Clue
Key scenario clue

The clue is the combination of four sessions of stable baseline data followed by two overlapping intervention points, leaving the instructional area, and the required task: Intervention selection from assessment, evidence, preferences, and contextual fit. The case file includes 4 recent sessions, 4 implementers, and 2 settings.

Trap
Common trap

Stakeholder input matters, but direct data, context, and integrity checks are still needed for a defensible answer.

Next
If you missed it, review Least restrictive function-based intervention

Then answer a few related scenarios before moving back to broad practice.

Why the other choices are weaker

A
Choice A

Stakeholder input matters, but direct data, context, and integrity checks are still needed for a defensible answer.

B
Choice B

This is weaker because it skips the assessment, integrity, or decision rule needed before changing procedures.

D
Choice D

Ignoring relevant data or context prevents a defensible behavior-analytic decision.

Study tags

Least restrictive function-based interventionIntervention selection from assessment, evidence, preferences, and contextual fitleast intrusivefunction-based

Turn this into a study plan

If this question felt difficult, practice a short drill from Selecting and Implementing Interventions and use the review page to turn missed items into a weak-area plan.

Test this weak areaStart H domain drillReview missed questionsExplain my own question

Related study guides

GuideDistractor patternsUse this if the wrong answer sounded plausible.GuideMissed-question reviewUse this if you want to turn the miss into a study rule.GuideScore plateau guideUse this if similar mistakes keep repeating.

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Question FAQ

What BCBA domain does this question cover?

This practice question is tagged to Selecting and Implementing Interventions. It also includes study tags for Least restrictive function-based intervention, Intervention selection from assessment, evidence, preferences, and contextual fit, least intrusive, function-based.

How should I review this practice question?

Answer the scenario before reading the explanation, compare your reasoning with the correct answer, then review why the distractors are weaker.

Is this an official BACB exam question?

No. This is an original study question for BCBA Scenario Tutor and is not an official BACB exam item.

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