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Domain C · 12% of Exam (21 Scored Questions)

Domain C: Measurement, Data Display, and Interpretation Practice Questions

Domain C tests continuous measurement (count, rate, duration, latency, IRT), discontinuous measurement (partial interval, whole interval, momentary time sampling, PLACHECK), IOA calculations, and visual data analysis.

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Sample Domain C Questions

Solve these representative scenarios and examine why each distractor is incorrect:

Sample Question 01Domain C: Measurement & Data DisplayDiscontinuous Measurement Selection

A behavior analyst is designing a data collection protocol for an RBT to track peer cooperative play in a busy classroom setting where the technician must also provide instruction. The goal is to gradually increase continuous engagement. Which measurement system is most appropriate?

Select an option to test your answer

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Core Concepts Tested in Domain C

  • ✓Continuous Measurement: Rate, Duration, Latency, Interresponse Time (IRT)
  • ✓Discontinuous Measurement: Partial Interval, Whole Interval, Momentary Time Sampling
  • ✓Measurement Artifacts and Bias
  • ✓Interobserver Agreement (IOA): Total Count, Mean Count-per-Interval, Exact Count, Trial-by-Trial
  • ✓Visual Analysis: Level, Trend (Split-Middle Line), Variability, Phase Change Lines
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Common Traps & Distractors in Domain C

  • • Partial interval recording overestimates duration and underestimates high-rate behavior.
  • • Whole interval recording underestimates overall duration and frequency.
  • • Calculating Mean Count IOA vs. Total Count IOA: Total Count IOA can mask huge interval-by-interval discrepancies.