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Free BCBA® Mock Exam Questions: The Toughest Questions

Updated: Nov 2, 2023

Take advantage of these free BCBA® mock exam questions by reading this article, OR download this free mock exam PDF that you can print out at home.

ABA Wizard Free Mock Exam PDF study guide

ABA Wizard has 3 mock exams available for $29 USD each (or $59 for all 3), but we understand the reluctancy you may have for paying for a mock exam when you don't know what to expect.

We gathered the 5 most difficult questions from our mock exams and decided to share them with you! Kickstart your BCBA® study program with these free questions to help you decide if ABA Wizard is right for you!

What qualifies these questions as the toughest? Less than 50% of test takers got the correct answer on these!

Read the questions and pick your answers. Then scroll down and read the answers to see if you were right! (We included explanations for all the questions so you'll know where you went wrong, if you did!)

But you should know this awesome fact! Our full-length BCBA® mock exams include explanations and Cooper book references for EVERY single question. So no matter what, you can get help on any question you got wrong when you review your answers.

Other benefits from ABA Wizard's full-length mock exams:

  • Emulates the real BCBA® exam as closely as possible with 185 total practice questions.

  • Timed just like the real one! Challenge yourself to complete in under 4 hours.

  • Take it on a computer to accurately test yourself and imitate the environment.

  • Each of our 3 available mock exams have different practice questions, to give you a thorough practice and understanding of ABA material.

  • Get your entire quiz emailed to you for revision. Print out at home if desired!

  • Get 2 attempts per purchase.

Graphic with text: Free BCBA Mock Exam Questions, Our 5 most difficult questions explained!

Quiz Yourself:

1. While supervising Gabriel, an employee working towards certification, Flor notices that Gabriel has not been filing the data sheets properly in the clients' files. Using the Performance Diagnostic Checklist - Human Services Flor identifies that the category "Training" and "Task Clarification & Prompting" as areas to improve. "Performance Consequences" and "Resources/Materials" were categories identified to not need improvement. Which of the following interventions may be effective based on these results for Flor to address Gabriel's behavior?

A. Ensure there are client books available to Gabriel

B. Increase supervisor presence to increase feedback opportunities

C. Add a reminder to Gabriel's worksite indicating to file the data sheets after the session

D. Create data sheets that are easier to fill out and more intuitive

2. James is using a changing criterion design to increase the number of widgets his employee assembles every 10 minutes. Which of the following is not a recommended component of the procedure?

A. The criterion for receiving the reinforcer will change every session to increase the amount of widgets compiled.

B. James will begin with a baseline phase by not providing reinforcement for several sessions.

C. After several criterion increases, James will decrease the criterion to demonstrate experimental control.

D. James will vary the amount of change when increasing the criterion to demonstrate experimental control.

3. While at school, Armani is told that she is not allowed to go to recess. She begins to pull her hair, and her teacher takes her outside for a few minutes of recess. The behavior of interest is pulling her hair. Identify the role of the stimulus of being told she is not allowed to go to recess.





4. Which behavior is being reinforced when using a DRO procedure to address elopement in a classroom setting?

A. Elopement

B. Different behaviors that may be occurring when the reinforcer is delivered.

C. Not engaging in elopement

D. Participating in class activities

5. While reviewing ABC data that were collected in the natural environment, you notice that the most common antecedents include staff attending to the individual’s housemates, as well as staff completing paperwork. The behavior of concern is shouting. The most common consequences include the staff providing a prompt for your client to complete a task such as a household chore. Based on these results which of the following interventions would not be a function based intervention?

A. Ignore shouting.

B. Provide frequent attention throughout the day.

C. Prompt the individual to complete chores throughout the day.

D. Continue prompting task completion.





1. Correct answer is C.

Interventions based on training, task clarification, or prompting may include providing BST, clarifying the tasks, or modifying the environment to provide prompts to the learner.

2. Correct answer is A.

All of the answers provided are recommended components of a changing criterion design besides changing the criterion every session. Typically, the changes occur after at least 3 sessions/data points

(Cooper, Heron, & Heward, 2019, p. 209).

3. Correct answer is D.

The aversive stimulus of being told she is not allowed to go to recess was a warning stimulus (being associated with not participating in a preferred stimulus). This motivating operation was the stimulus event likely being escaped in this contingency. (Cooper, Heron, & Heward, 2019, p. 386)

4. Correct answer is B.

In a DRO procedure the reinforcer is delivered contingent on the non-occurrence of the target behavior. This has potential to reinforce any behavior that could be going on when the reinforcer is delivered (Not necessarily only appropriate behaviors such as participating in class). (Cooper, Heron, & Heward, 2019, p. 600)

5. Correct answer is D.

Based on the ABC data, it appears that prompting a task is reinforcing the behavior. The antecedents suggest an attention function. Some interventions that could address this include ignoring shouting (extinction) and providing frequent attention throughout the day, potentially in the form of task requests (NCR). (Cooper, Heron, & Heward, 2019, p. 635)

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