Practice question
Measurement, Data Display, and Interpretation

Direct, indirect, and product measures: Measurement system selection.

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

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Question

Difficulty: hard. Skill: analyze. Type: data interpretation.

A BCBA reviews four sessions of stable baseline data followed by two overlapping intervention points for leaving the instructional area. The next decision depends on direct, indirect, and product measures. What should the BCBA do? The case file includes 12 recent sessions, 4 implementers, and 2 settings.

A
Treat the most recent data point as proof of the final conclusion
B
Base the decision on the descriptive label for leaving the instructional area and bypass direct, indirect, and product measures
C
Choose the measurement system that matches the behavior dimension and decision question in relation to learner's leaving the instructional area

Correct answer

D
Use a familiar protocol even though it does not address measurement system selection

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: Direct, indirect, and product measures. The case file includes 12 recent sessions, 4 implementers, and 2 settings. Choose the measurement system that matches the behavior dimension and decision question in relation to learner's leaving the instructional area is best because it answers that clue through measurement system selection 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: Direct, indirect, and product measures. The case file includes 12 recent sessions, 4 implementers, and 2 settings.

Trap
Common trap

A single point rarely supports a strong conclusion without considering trend, variability, and context.

Next
If you missed it, review Measurement system selection

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

Why the other choices are weaker

A
Choice A

A single point rarely supports a strong conclusion without considering trend, variability, and context.

B
Choice B

This is weaker because the label does not answer the Direct, indirect, and product measures decision point or test Measurement system selection.

D
Choice D

A familiar protocol is not enough unless it matches the assessed variables and the current decision question.

Study tags

Measurement system selectionDirect, indirect, and product measuresfrequencyrate

Turn this into a study plan

If this question felt difficult, practice a short drill from Measurement, Data Display, and Interpretation and use the review page to turn missed items into a weak-area plan.

Test this weak areaStart C 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 Measurement, Data Display, and Interpretation. It also includes study tags for Measurement system selection, Direct, indirect, and product measures, frequency, rate.

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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