Measurement, Data Display, and Interpretation
Measurement system selection
Select measurement based on the dimension of behavior and the decision the team needs to make.
How this shows up in scenario questions
- 1Choose duration when the question asks how long behavior lasts.
- 2Choose latency when time from cue to response matters.
- 3Choose permanent product when behavior leaves a countable outcome.
Common misconceptions
- Using frequency for all behaviors.
- Choosing time sampling when exact duration is needed.
- Ignoring feasibility and observer burden.
Distractor patterns
- Frequency when episode length is the target dimension.
- Latency when the stem asks about total occurrence time.
- Momentary time sampling for low-rate short behavior.
Related terms
frequencyratedurationlatencytime samplingpermanent product
Related practice prompts
Choose a measurement system that fits the behavior.
A BCBA wants to measure how long a learner remains out of seat after each occurrence. Which measurement system best matches this goal?
Choose a measurement system that fits the target behavior.
A BCBA needs to know how long each episode of leaving the work area lasts in a elementary classroom. Which measurement system best fits this question? The caregiver asks for a rationale that can be written in the treatment note.
Use IOA to evaluate measurement reliability.
Two observers collect frequency data on repeating questions during requesting help in a early-intervention session. Observer 1 records 14 responses and Observer 2 records 9 responses for the same session. What should the BCBA do with this information? The team wants the next step to be defensible from the current data.