RBT Assessment Practice Test

1 The domain in numbers

In the 3rd edition outline, Assessment became Behavior Assessment: still 3 tasks, but its share of the exam rose from 8% to 11%, about 8 of the 75 scored questions. Eight questions will not make or break most scores on their own, but they are among the most predictable questions on the exam, because the domain runs on one rule applied to different scenarios. Learn the rule and the procedures, and these are free points.

2 Your role: assist, never freelance

This is the line the exam tests most in this domain. The BCBA designs assessments and interprets results. You prepare materials, run the procedures you were trained on, collect clean data, and report what you observed. A parent asks what the results mean? Refer them to the BCBA. A procedure is not working? Report it, do not redesign it. On every assessment question, ask yourself: who decides here? If the answer choice hands the decision to the RBT, eliminate it.

3 ABC data: the detective notebook

ABC stands for antecedent, behavior, consequence. For each instance of a target behavior, you record what happened right before (the antecedent), exactly what the learner did (the behavior, described objectively with no opinions or labels), and what happened right after (the consequence). Over days and weeks, patterns emerge: the behavior always follows difficult demands and always ends with the demand being removed. That pattern points to the function, which is the whole point of the exercise.

Good ABC data is specific. Weak: "He got upset during math." Strong: "Antecedent: teacher presented a two-digit subtraction worksheet and said 'start.' Behavior: client pushed the worksheet off the desk and said 'no.' Consequence: teacher removed the worksheet and gave a 2-minute break." The second version lets a supervisor see the escape pattern. The first version tells them nothing. The exam loves asking which entry is written correctly: pick the objective, specific one every time.

4 Preference assessments: find what motivates

Reinforcement only works if the reinforcer actually motivates the learner, and preferences change, so preference assessments are structured ways to find out what is reinforcing right now. Know these three:

• Multiple stimulus without replacement (MSWO). Present an array of items, let the learner pick one, remove the chosen item, and repeat. Produces a ranked list. Fast and exam-popular.
• Multiple stimulus with replacement (MSW). Same idea, but chosen items stay in the array. Good when you need a top pick rather than a full ranking.
• Paired stimulus (forced choice). Present items two at a time and record selections. Simple, thorough, and easy to run exactly as trained.

Your job in each is the same: run the procedure exactly as your supervisor trained you, record selections accurately, and report the results. You do not pick the reinforcers yourself and you do not interpret what the ranking means for the plan.

5 Functional behavior assessment: your part

A functional behavior assessment (FBA) is the supervisor's process for identifying why a behavior happens: the function it serves for the learner, such as gaining attention, escaping demands, accessing tangibles, or sensory stimulation. Your contribution is the data that feeds it: clean ABC records, accurate preference assessment results, and honest reports of what you observed. The exam will test whether you know where your part ends. Collecting data for an FBA: your job. Deciding what the FBA means: the BCBA's job.

6 Practice: 5 original questions

These five questions are original, written for this page to drill the domain's golden rule and core procedures. They are not real exam questions. Choose an answer for each, then check your score.

Last reviewed: October 7, 2026 against the BACB RBT 3rd edition task list.