Free RBT Full Mock Exam 2026 — 85 Questions, 90 Minutes

Take a free full-length BACB RBT mock exam that simulates the real test: 85 multiple-choice questions, a 90-minute countdown timer with auto-submit, and question distribution weighted by the official RBT Test Content Outline (3rd Edition). Get instant scoring, a per-domain performance breakdown, and detailed ABA-grounded explanations for every question — no signup required.

How This Mock Exam Matches the Real BACB RBT Exam

Sample Questions from the Mock Exam Pool

Here are 10 real questions from the FlashGenius RBT question bank that powers this mock exam, with answers and detailed explanations:

Sample Question 1 — Assessment

You are helping your BCBA with a preference assessment for Sara, a 4-year-old with autism who does not speak. The BCBA tells you to present one item at a time and record whether Sara approaches, touches, or plays with the item within 5 seconds. When you present a toy car, Sara looks at it, reaches for it, and starts rolling it on the table. What should you record for this trial?

  1. A. Record that Sara rejected the item because she didn’t say she wanted it.
  2. B. Record that Sara approached/selected the item because she reached for and played with it. (Correct answer)
  3. C. Record nothing because she did not play with it for at least 1 minute.
  4. D. Record that the item is her favorite because she played with it right away.

Correct answer: B

Explanation: For a single-stimulus (single-item) preference assessment, the RBT records whether the client approaches or interacts with the item as defined by the BCBA. The RBT Task List requires following the operational definitions given by the supervisor. - B is correct because Sara’s reaching and playing with the toy meets the definition of approach/selection within 5 seconds. - A is incorrect because vocal requests are not required; the BCBA defined approach as physical interaction. - C is incorrect because the BCBA only specified what to do within 5 seconds, not a 1-minute requirement. - D is incorrect because deciding that an item is her “favorite” is an interpretation; the RBT’s job is to record behavior, not label preferences beyond the BCBA’s instructions.

Sample Question 2 — Assessment

Your BCBA is conducting a skills assessment with Jonah, a 7-year-old with developmental delays, to see what daily living skills he already has. The BCBA asks you to present specific tasks (like brushing teeth steps) and record exactly what Jonah does independently, with prompts, or not at all. During the assessment, what is your primary responsibility as the RBT?

  1. A. Change the order of the tasks based on what you think will be easiest for Jonah.
  2. B. Only present the tasks you think are most important for Jonah to learn.
  3. C. Follow the BCBA’s instructions for each task and record Jonah’s responses accurately and objectively. (Correct answer)
  4. D. Decide which new goals should be added to Jonah’s treatment plan based on his performance.

Correct answer: C

Explanation: When assisting with skills assessments, the RBT’s role is to follow the BCBA’s directions and collect accurate, objective data. This matches the Assessment section of the RBT Task List. - C is correct because it describes implementing the assessment as written and recording data without adding personal judgment. - A is incorrect because changing the order without direction may affect the assessment results and is a clinical decision. - B is incorrect because skipping tasks changes the assessment and is not within the RBT’s scope. - D is incorrect because selecting or writing goals is the BCBA’s responsibility, not the RBT’s.

Sample Question 3 — Behavior Reduction

A BCBA has written a plan for 5-year-old Noah, who often runs away from the table during work time to escape tasks. The plan includes an antecedent strategy: giving Noah a visual schedule and a 2-minute break after every 3 tasks completed. At the start of your session, you sit Noah at the table and begin presenting tasks without showing the schedule or mentioning breaks. Noah quickly runs away from the table. What should you have done to correctly follow the antecedent strategy?

  1. A. Wait until Noah runs away, then show him the visual schedule and offer a break.
  2. B. Show Noah the visual schedule before starting, explain when breaks will happen, and follow it consistently. (Correct answer)
  3. C. Ignore the visual schedule and just give breaks whenever Noah seems tired.
  4. D. Ask Noah if he wants to work today and only use the schedule if he says yes.

Correct answer: B

Explanation: Antecedent strategies are things you do before the behavior happens to prevent problem behavior and support appropriate behavior. The BCBA’s plan says to use a visual schedule and planned breaks. As an RBT, you must set this up before starting work. - B is correct because it implements the antecedent strategy as written: presenting the visual schedule and explaining when breaks will occur before tasks begin. - A is incorrect because waiting until after he runs away does not prevent the problem behavior; antecedent strategies should be used proactively. - C is incorrect because ignoring the schedule and giving breaks randomly does not follow the written plan and may accidentally reinforce escape behavior. - D is incorrect because whether or not Noah “agrees” is not part of the plan; the RBT’s role is to implement the BCBA’s antecedent strategies consistently.

Sample Question 4 — Behavior Reduction

You are implementing a Functional Communication Training (FCT) program for 7-year-old Ava, who used to throw objects to get adult attention. The BCBA’s plan teaches Ava to tap the adult’s shoulder and say, “Play with me” instead. During your session, Ava throws a toy on the floor and then looks at you. What is the BEST way to respond according to the FCT plan?

  1. A. Ignore the toy-throwing, prompt Ava to tap your shoulder and say, “Play with me,” then give her attention for using the new communication. (Correct answer)
  2. B. Tell Ava, “No throwing!” and immediately pick up the toy and start playing with her so she calms down.
  3. C. Take away all her toys for the rest of the session so she learns not to throw them.
  4. D. Stop the FCT program and go back to whatever you were doing before she threw the toy.

Correct answer: A

Explanation: In Functional Communication Training (FCT), the RBT teaches and reinforces a replacement communication response that serves the same function as the problem behavior. Here, the function is attention, and the replacement is tapping and saying, “Play with me.” - A is correct because it follows FCT: do not give attention for the problem behavior (throwing), prompt the appropriate communication, and then provide attention for the correct response. - B is incorrect because giving attention right after the toy-throwing would reinforce the problem behavior, even though you said “No throwing.” - C is incorrect because removing all toys is a punishment strategy not described in the plan and is not something an RBT should add on their own. - D is incorrect because stopping the FCT program without direction from the BCBA is outside the RBT’s role; you must continue to implement the written plan unless given new instructions.

Sample Question 5 — Documentation and Reporting

During a clinic session, you notice that the data sheet for 4-year-old Noah’s mand (requesting) program is missing one of the targets that the BCBA added last week. You remember working on that new target today, but there is no place to record it. What should you do to ensure accurate documentation?

  1. A. Write the data for the missing target in the margin of the data sheet and don’t tell anyone, since you still recorded it.
  2. B. Do not collect data on that target today and pretend you didn’t run it, so the data sheet stays neat.
  3. C. Collect data on the missing target on a separate paper or note, clearly labeled, and inform the BCBA or supervisor as soon as possible. (Correct answer)
  4. D. Guess how many times Noah did the target at the end of the session and write that number in an empty box on the data sheet.

Correct answer: C

Explanation: RBTs must ensure **data accuracy** and communicate documentation problems to their supervisor. - **Correct (C):** Accurately records the data for the missing target (on a clearly labeled separate paper) and **immediately informs the BCBA/supervisor** so the data sheet can be corrected. This follows the RBT Task List requirement for **data accuracy and timely reporting** of issues. - **A:** Writing in the margin without telling anyone can cause **confusion** and may lead to data being missed or misread. - **B:** Skipping data collection on a program that was run leads to **incomplete and inaccurate data**, which is not acceptable. - **D:** Guessing data is **unethical and inaccurate**. RBTs must never estimate or make up data; they must record what actually occurred.

Sample Question 6 — Documentation and Reporting

You are working with 7-year-old Carlos, who has autism. His behavior plan says to record all instances of self-injury and to notify the BCBA if there is an increase. Today, Carlos engaged in self-injury 8 times, which is much more than usual. What is the MOST appropriate way to handle documentation and reporting?

  1. A. Record the 8 instances on the data sheet and send a same-day message or follow the agency’s procedure to notify the BCBA about the increase. (Correct answer)
  2. B. Record the 8 instances on the data sheet but wait until the monthly team meeting to mention the increase.
  3. C. Tell the parent that the BCBA needs to change the plan and let them handle contacting the BCBA.
  4. D. Only write in the session note that Carlos had a 'rough day' without including the exact number of self-injury behaviors.

Correct answer: A

Explanation: RBTs must **accurately record data** and **promptly report significant changes** in behavior according to the plan and agency procedures. - **Correct (A):** Accurately records the **frequency** (8 instances) and **notifies the BCBA the same day** using the proper communication method. This matches the RBT Task List for **data accuracy** and **timely reporting** of important changes. - **B:** Delaying this information until a monthly meeting is **too late**, especially for self-injury, which can be serious. - **C:** The RBT, not the parent, is responsible for reporting behavior changes through the proper channels. Also, RBTs do **not suggest plan changes**; they only report data. - **D:** “Rough day” is **vague and subjective** and does not provide the specific data (8 instances) that the BCBA needs.

Sample Question 7 — Measurement

The BCBA wants you to measure how long Tanika engages in hand-flapping during a 1-hour session. You start a timer each time she begins hand-flapping and stop it each time she stops. At the end of the session, you add up all the times and record the total. What type of measurement are you using?

  1. A. Duration (Correct answer)
  2. B. Latency
  3. C. Momentary time sampling
  4. D. Permanent product

Correct answer: A

Explanation: You are measuring how long the behavior lasts from start to finish and adding up the total time. This is duration recording, a core Measurement skill for RBTs. - A (Duration) is correct because you are timing the length of hand-flapping behavior. - B (Latency) would be the time from an instruction or event to the start of hand-flapping, which is not what you are doing. - C (Momentary time sampling) is a discontinuous measurement where you check at specific moments (e.g., at the end of each interval) to see if the behavior is happening, not timing it. - D (Permanent product) is when you measure the result of behavior (like number of worksheets completed), not the behavior as it happens.

Sample Question 8 — Measurement

Your BCBA sets up a program to measure off-task behavior using 10-second partial-interval recording during table work. Every 10 seconds, a timer beeps and you mark “+” if the client is off-task at any time during that 10-second interval, and “−” if they are not off-task at all during that interval. What type of measurement are you using?

  1. A. Whole-interval recording
  2. B. Partial-interval recording (Correct answer)
  3. C. Momentary time sampling
  4. D. Frequency recording

Correct answer: B

Explanation: You are using a discontinuous measurement system where you divide time into intervals and mark the behavior if it happens at any point during the interval. This is partial-interval recording, which is part of the Measurement tasks for RBTs. - B (Partial-interval recording) is correct because you record a “+” if the behavior occurs at any time during the interval. - A (Whole-interval recording) would require the behavior to occur for the entire interval to mark it as happening. - C (Momentary time sampling) would have you check only at the exact end of the interval to see if the behavior is happening at that moment. - D (Frequency recording) would involve counting each instance of off-task behavior, not using intervals with plus/minus marks.

Sample Question 9 — Professional Conduct and Scope of Practice

Your BCBA supervisor has created a behavior intervention plan (BIP) for Jamal, a 9-year-old with developmental delays, that includes using planned ignoring (extinction) for mild whining. Jamal’s teacher tells you, "I don’t like that plan. When he whines, I want you to give him a break right away instead of ignoring him." What is the MOST appropriate action for you as the RBT?

  1. A. Follow the teacher’s request during school sessions and the BCBA’s plan only at home.
  2. B. Explain that you must follow the BCBA’s written plan and offer to let the BCBA know the teacher’s concerns. (Correct answer)
  3. C. Stop using extinction completely and wait until the BCBA notices.
  4. D. Tell the teacher that the BCBA is wrong and you will help her write a new plan.

Correct answer: B

Explanation: RBTs must follow the treatment plan designed by the BCBA and stay within their scope of practice. They do not change procedures on their own but can communicate concerns to the supervisor. - **Correct (B)**: You respectfully explain that you are required to implement the BCBA’s plan as written and that you will share the teacher’s concerns with the BCBA. This follows the RBT Task List requirement to follow the behavior plan and communicate with the supervisor. - **A** is incorrect because changing procedures without BCBA approval can make the plan ineffective and is outside your role. - **C** is incorrect because you are stopping a prescribed procedure without permission and not communicating concerns, which is unprofessional. - **D** is incorrect because it is not your role to say the BCBA is wrong or to write a new plan. RBTs do not design or change interventions.

Sample Question 10 — Professional Conduct and Scope of Practice

You are working with Ava, a 5-year-old with autism, at a clinic. Her mother asks you, "Can you tell me how many hours of ABA she really needs and if we should stop speech therapy? You see her the most, so I trust your opinion more than the BCBA." What is the BEST way to respond?

  1. A. Give your personal opinion based on what you’ve seen in sessions.
  2. B. Tell her you’re not allowed to talk to parents about anything.
  3. C. Explain that treatment recommendations are made by the BCBA and offer to help her schedule a time to talk with the BCBA. (Correct answer)
  4. D. Suggest that she reduce speech therapy and increase ABA since you are with her more often.

Correct answer: C

Explanation: RBTs must work within their scope of practice. Making treatment recommendations (e.g., number of hours, which therapies to stop or start) is the BCBA’s role, not the RBT’s. - **Correct (C)**: You clearly state that treatment decisions are made by the BCBA and help connect the parent with the BCBA. This aligns with the RBT Task List: follow the BCBA’s direction and do not practice outside your competence. - **A** is incorrect because giving personal clinical opinions about treatment hours or other therapies is outside the RBT scope. - **B** is incorrect because you *can* talk to parents, but only within your role (e.g., describing what you did in session, how to follow the plan), not making treatment decisions. - **D** is incorrect because suggesting changes to other services (like speech) is a clinical recommendation that must come from qualified professionals, not an RBT.

Recommended 3-Step RBT Prep Path

  1. Step 1: Take the 10-question quick-start test to gauge your baseline.
  2. Step 2: Practice weak areas with domain-specific RBT practice tests.
  3. Step 3: Take this full 85-question timed mock exam until you consistently score 80%+.

RBT Full Mock Exam FAQ

Is this RBT full mock exam really free?

Yes. The full-length 85-question RBT mock exam is completely free with no signup or credit card required. You get instant scoring, a per-domain performance breakdown, and detailed explanations for every question.

How closely does this mock exam match the real BACB RBT exam?

It mirrors the real exam structure: 85 multiple-choice questions in 90 minutes, weighted by the official RBT Test Content Outline (3rd Edition) domain percentages — 25% Behavior Acquisition, 19% Behavior Reduction, 17% Data Collection and Graphing, 15% Ethics, 13% Documentation and Reporting, and 11% Behavior Assessment.

What score should I aim for on the full mock exam?

Aim for 80% or higher. While the BACB does not publish an exact passing score, consistently scoring 80%+ on full-length timed mocks is a strong indicator of readiness for the real exam.

What happens when the 90-minute timer runs out?

The exam submits automatically, just like the real test. Any unanswered questions are marked incorrect, and you immediately see your score, per-domain breakdown, and full answer review.

Can I retake the mock exam with different questions?

Yes. Each attempt draws a fresh weighted selection from the question pool, so you can retake the mock exam multiple times and see new questions.

Should I take the quick test or the full mock exam first?

Start with the 10-question quick test to gauge your baseline, practice weak domains individually, then take the full 85-question mock exam to build test-day stamina and pacing.

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