503 practice questions for the BCBA (Board Certified Behavior Analyst) exam, built on the BCBA Test Content Outline (6th ed.) that every exam has used since January 2025. They follow its 9 content areas, weighted the way the real exam is, from Behavior-Change Procedures (25 of 175 questions) and Concepts and Principles (24) to Behavior Assessment (23), Ethical and Professional Issues (22), Measurement, Data Display, and Interpretation (21), Selecting and Implementing Interventions (20), Personnel Supervision and Management (19), Experimental Design (13) and Behaviorism and Philosophical Foundations (8), and cover all 104 of its tasks. Many are cases and graphs: read a functional analysis, judge a reversal or multiple baseline, pick the procedure, and decide what the Ethics Code asks of you. Each is tagged to its task code, so your score report shows exactly which tasks you miss, and every answer explains why the best choice is best and names its public source.
The real test: 185 multiple-choice questions (175 scored, 10 unscored) in 4 hours at a Pearson VUE test center, four choices each, all weighted equally. It is pass/fail on your overall performance and the BACB does not publish a passing percent; you can take it up to 8 times within 2 years of your application approval, at least 30 days apart. Since January 2025 it follows the 6th edition outline: 104 tasks in 9 content areas. Our practice test is full length, 175 scored questions plus 10 unscored in 240 minutes, split by the 9 content areas like the outline, passing at 70% (123 of 175).
Here: 503 questions. Our own practice questions, built on the BCBA Test Content Outline (6th ed.) used since January 2025 and written from public sources (the BACB's Ethics Code for Behavior Analysts and BCBA Handbook, Cooper, Heron and Heward, and the published studies behind each procedure), with every answer's source named. Topics are the 9 content areas of the outline. Not the BACB's test questions. Free.
"On the test" is the rough share of a 175-question test for each topic, following the exam's published weights.
10 sample questions
A researcher records every instance of a child's hand-raising across a month and notes when it happens, without changing anything. Which level of scientific understanding does this reach?
A.Description
B.Prediction
C.Replication
D.Control
Show answer
A. Description
BCBA-1 · A. Behaviorism and Philosophical Foundations
A child asks for juice by signing, by saying 'juice' and by handing over a picture card. All three produce juice. These responses are best described as what?
A.Three separate behaviors with no relation
B.A response class defined by a shared function
C.A single response measured in three different ways
D.A topographical response class only
Show answer
B. A response class defined by a shared function
BCBA-24 · B. Concepts and Principles
Which is the best operational definition of aggression for a client plan?
A.Hostile behavior that shows the client's frustration with demands placed on him
B.Aggressive outbursts, as judged by the staff member working with him that day
C.Any time the client becomes angry and acts out toward the people around him
D.Hitting, kicking or biting a person with enough force to make contact
Show answer
D. Hitting, kicking or biting a person with enough force to make contact
BCBA-93 · C. Measurement, Data Display, and Interpretation
A study tests whether a visual schedule reduces transition time for a kindergartner. What is the dependent variable?
A.The visual schedule
B.The teacher who delivers the schedule each morning
C.The kindergarten classroom
D.Transition time
Show answer
D. Transition time
BCBA-156 · D. Experimental Design
Which list matches the four core principles of the Ethics Code for Behavior Analysts?
A.Respect autonomy; promote justice; protect privacy; follow the treatment manual exactly as written
B.Use punishment last; collect data; supervise others; publish research findings
C.Do no harm; obey the law; maximize profit for the agency; keep good records for funders
D.Benefit others; treat others with compassion, dignity and respect; integrity; competence
Show answer
D. Benefit others; treat others with compassion, dignity and respect; integrity; competence
BCBA-195 · E. Ethical and Professional Issues
At intake, a 9-year-old is referred for sudden, new head hitting. His records show recurrent ear infections. What should the BCBA do first?
A.Start an FA right away, since the history is not relevant
B.Ask for a medical check of possible ear pain first
C.Note it in the file and design the plan without it
D.Start extinction, since head hitting is usually for attention
Show answer
B. Ask for a medical check of possible ear pain first
BCBA-258 · F. Behavior Assessment
A BCBA wants a reinforcer to be as effective as possible. Which arrangement helps most?
A.Deliver it at the end of the day, regardless of responding
B.Deliver it right after the response, contingently
C.Deliver it before the response to motivate the learner
D.Deliver it in very large amounts to cause satiation quickly
Show answer
B. Deliver it right after the response, contingently
BCBA-324 · G. Behavior-Change Procedures
Which goal is written in observable and measurable terms?
A.Mia will show appropriate math behavior in class most of the time
B.Mia will understand addition and feel confident about math by the end of the term
C.Mia will improve her math skills and her attitude toward schoolwork
D.Given 10 sums, Mia will write 9 correctly on 3 straight days
Show answer
D. Given 10 sums, Mia will write 9 correctly on 3 straight days
BCBA-394 · H. Selecting and Implementing Interventions
Which outcome is a documented benefit of effective behavior-analytic supervision?
A.Less need for treatment plans to be written down
B.Shorter sessions for every client on the caseload
C.Better client outcomes and staff skill levels
D.Fewer data sheets for technicians to fill out
Show answer
C. Better client outcomes and staff skill levels
BCBA-450 · I. Personnel Supervision and Management
Records show that a student's off-task behavior reliably rises in the 20 minutes after recess. No variable has been changed. What level of understanding do these data support?
A.Explanation, because a functional relation is established
B.Control, because the cause of the behavior is now known
C.Prediction, because two events are shown to covary
D.Description only, since no correlation was examined
Show answer
C. Prediction, because two events are shown to covary
BCBA-2 · A. Behaviorism and Philosophical Foundations