Domain A · Current 2026 outline
RBT Study Guide 2026: Data Collection and Graphing
This domain tests whether an RBT can collect dependable behavioral data, describe what happened in observable terms, calculate common summaries, and recognize what a graph communicates. Accurate data lets the supervising behavior analyst evaluate progress and make informed changes; vague or inconsistent recording can lead to the wrong conclusion.
13 scored questions · 17% of the scored exam · Content checked September 1, 2026
Core ideas to understand
- Continuous measurement records every occurrence or dimension of behavior, such as frequency, rate, duration, latency, and interresponse time.
- Discontinuous measurement samples behavior during intervals. Know the practical difference among partial-interval, whole-interval, and momentary time sampling.
- Permanent-product recording measures an outcome left behind by behavior, but only when the product can be defined and counted reliably.
- Graphs should be updated accurately. Look for level, trend, variability, and changes that coincide with a condition or phase change.
Domain A task checklist
These summaries paraphrase the current outline for study. Use the linked BACB document when exact official wording matters.
| Task | What to be ready to do or identify |
|---|---|
| A.1 | Continuous measurement Select and apply procedures such as frequency, duration, latency, rate, and interresponse time. |
| A.2 | Discontinuous measurement Use interval-based sampling and distinguish what each procedure can overestimate or underestimate. |
| A.3 | Permanent products Measure an observable result of behavior when direct observation is not necessary or practical. |
| A.4 | Data entry and graphs Enter results accurately and update the visual display specified by the program. |
| A.5 | Observable definitions Describe behavior and context using language another observer could identify and measure. |
| A.6 | Data summaries Calculate values such as rate, percentage, and mean duration from the information provided. |
| A.7 | Graph interpretation Identify changes in level, trend, and variability without making unsupported causal claims. |
| A.8 | Data quality Recognize how unreliable measurement and poor procedural fidelity can harm decisions and client outcomes. |
Check your reasoning
A learner begins work 18 seconds after an instruction. What dimension is being measured?
Answer: Latency. Latency is the time between a specified event and the start of the response.
A worksheet is checked after the session for the number of completed problems. What procedure fits best?
Answer: Permanent-product recording. The completed work remains available to measure after the behavior occurred.
Turn this lesson into practice
Answer the domain drill without notes, review the rationale for every miss, then return to the relevant task above. A raw practice percentage is study feedback; it is not an official passing score or guarantee.
Primary references: RBT Test Content Outline, 3rd edition and current RBT Handbook.