RBT Mock Exam: 75 Questions, Timed Like the Real Test

75 questions, the number the real exam scores, in 79 minutes. Domains A to F get 13, 8, 19, 14, 10 and 11 questions, exactly as on the 2026 exam, and every answer is explained at the end.

  • 75 questions
  • 79-minute timer
  • Exact 2026 domain split
  • New draw from 454 questions each time

The timed exam shows your score and every explanation at the end, like the real test. Practice mode checks each answer as you go.

Sample questions from the mock exam

  1. Question 1 · Data Collection and Graphing

    A client hand flaps several times in a row. The RBT times the gap from the end of one flap to the start of the next flap. What is this an example of?

    1. A. Duration recording
    2. B. Latency recording
    3. C. Frequency recording
    4. D. Interresponse time recording
    Show the answer

    D. Interresponse time recording

    Interresponse time is the amount of time between the end of one response and the start of the next response, which matches timing the gap between flaps. Latency instead measures the time from an instruction to the first response.

  2. Question 2 · Behavior Assessment

    During a multiple stimulus without replacement assessment, the RBT rearranges the remaining items into new positions after every selection. Why is this step important?

    1. A. It gives the client more items to choose from during later trials
    2. B. It keeps choices from reflecting position, such as always picking the item on the left
    3. C. It gives the client a short break from choosing between selections
    4. D. It keeps the client from remembering which items were already chosen
    Show the answer

    B. It keeps choices from reflecting position, such as always picking the item on the left

    If items stayed in the same places, a client might keep choosing by location rather than by preference, so moving the remaining items after each selection controls for position bias. It does not add items, give the client a break, or change what the client remembers about earlier choices.

  3. Question 3 · Behavior Acquisition

    A supervisor's plan calls for delivering a token after every third correct response during a matching task. What schedule of reinforcement is being implemented?

    1. A. Fixed interval
    2. B. Fixed ratio
    3. C. Variable interval
    4. D. Continuous
    Show the answer

    B. Fixed ratio

    Reinforcing after a set number of responses, here every third response, is a fixed ratio schedule. Interval schedules are based on the passage of time, not a set count of responses.

  4. Question 4 · Behavior Reduction

    A client grabs snacks from a sibling's plate at every meal. The behavior happens whether or not anyone is paying attention at the time, but it stops as soon as the client is given a snack of their own. What function does this behavior most likely serve?

    1. A. Escape from mealtime demands
    2. B. Access to attention
    3. C. Access to a tangible item
    4. D. Automatic reinforcement
    Show the answer

    C. Access to a tangible item

    The behavior stops once a snack is provided and does not depend on whether others are attending, which points to access to a tangible item as the function. If attention were maintaining it, the behavior would depend on whether someone was watching.

  5. Question 5 · Documentation and Reporting

    The client's speech-language pathologist tells the RBT she thinks one of the client's mand targets should be changed to a different word. What should the RBT do with this suggestion?

    1. A. Switch to the new word at the next session, since she is a language specialist
    2. B. Teach both words for now so that neither provider's plan is ignored
    3. C. Tell her the target is final because the supervisor already chose it
    4. D. Relay the speech-language pathologist's suggestion to the supervisor
    Show the answer

    D. Relay the speech-language pathologist's suggestion to the supervisor

    Suggestions from other service providers are relayed to the supervisor, who decides whether the target should change. Switching words or teaching both changes the program without that decision, and calling the target final wrongly shuts down input the supervisor may want to use.

  6. Question 6 · Ethics

    An RBT realizes partway through data entry that a scoring mistake was made earlier in the week and tells the supervisor right away instead of leaving it unmentioned. Which core principle does this best reflect?

    1. A. Treat others with compassion, dignity, and respect
    2. B. Behave with integrity, being honest and accountable
    3. C. Benefit others, putting the client's welfare first
    4. D. Ensure their own competence for the work they do
    Show the answer

    B. Behave with integrity, being honest and accountable

    Owning up to a mistake instead of hiding it is integrity: being honest and accountable even when it would be easier to stay quiet. Accurate data do help the client, but the act itself is a disclosure of the RBT's own error, which is what integrity covers.

RBT mock exam FAQ

Why 75 questions and 80 minutes?

The real exam scores 75 of its 85 questions, so a 75-question attempt covers exactly the scored share of each domain. At the real exam's pace of 90 minutes for 85 questions, 75 questions get 79 minutes.

How close are these questions to the real RBT exam?

They test the same 43 tasks in the same format: a short scenario or definition, four options and one correct answer. The real exam's own questions are confidential, so every question here is written for this site, and each one says which task it covers when you review your answers.

What should I score on a mock exam before booking the real one?

The BACB does not publish a passing percentage, so no practice score maps onto a pass. What a mock exam does show is where you lose marks: the score by domain at the end points you to the domain quizzes worth repeating.