BCBA Practice Test

Sample Questions and Answers

Question 1. A behavior analyst reviews several weeks of data and finds that a client’s target behavior occurs most frequently immediately after difficult academic tasks are presented. Which assessment finding should be considered first when developing an intervention plan?

A. The behavior may be maintained by escape from task demands.

B. The behavior is unrelated to environmental events.

C. The behavior should be ignored because it occurs during instruction.

D. The behavior is automatically maintained without additional assessment.

Correct Answer: A. The behavior may be maintained by escape from task demands.

Explanation:
Behavior analysts use assessment data to identify the environmental variables that influence behavior. When a target behavior consistently occurs following the presentation of difficult tasks, the behavior may be functioning as an escape or avoidance response. Before selecting an intervention, the behavior analyst should review assessment results, identify the maintaining variables, and develop evidence-based strategies that address the function of the behavior. Function-based interventions are generally more effective than approaches that focus only on reducing the behavior itself. Functional assessment and intervention planning are core competencies assessed on the BCBA certification exam.

Question 2. A client has successfully learned a new communication skill during therapy sessions but rarely uses the skill at home or in the community. Which intervention should the behavior analyst prioritize to improve long-term success?

A. Focus on promoting generalization of the skill across different people, settings, and situations.

B. Discontinue teaching because the skill has already been mastered.

C. Limit practice to the original therapy environment.

D. Reduce opportunities for the client to use the new skill.

Correct Answer: A. Focus on promoting generalization of the skill across different people, settings, and situations.

Explanation:
Generalization occurs when a learned behavior continues to occur across different environments, people, materials, or situations beyond the original teaching setting. A primary goal of applied behavior analysis is to ensure that meaningful skills transfer to everyday life where they provide long-term benefits. Behavior analysts use evidence-based strategies such as programming common stimuli, teaching across multiple settings, and involving caregivers or teachers to support generalization. Promoting maintenance and generalization is essential for producing socially significant outcomes and is commonly tested on the BCBA certification examination.

Question 3. During treatment review, a behavior analyst notices that data collected by different staff members vary significantly even though they are observing the same behavior. What should be addressed first?

A. Improve measurement procedures and evaluate interobserver agreement.

B. Ignore the differences because behavior always varies.

C. Collect fewer observations to simplify data collection.

D. Replace the intervention immediately without reviewing the data.

Correct Answer: A. Improve measurement procedures and evaluate interobserver agreement.

Explanation:
Reliable data collection is essential for making accurate clinical decisions. Large differences between observers may indicate that the target behavior is not clearly defined or that staff require additional training on measurement procedures. Evaluating interobserver agreement helps determine whether data are being collected consistently and accurately. Reliable measurement improves confidence in treatment decisions, supports objective evaluation of intervention effectiveness, and strengthens the scientific quality of behavior analytic services. Measurement and data reliability are fundamental areas of knowledge assessed on the BCBA certification exam.

Question 4. Before implementing a new behavior intervention plan, a behavior analyst discusses the proposed procedures, expected outcomes, potential risks, and answers the client’s questions. What ethical responsibility is being demonstrated?

A. Informed consent.

B. Positive punishment.

C. Extinction.

D. Response cost.

Correct Answer: A. Informed consent.

Explanation:
Informed consent is a fundamental ethical responsibility in behavior analysis. Before beginning services or implementing significant treatment changes, behavior analysts should ensure that clients or their authorized decision-makers understand the proposed procedures, expected benefits, potential risks, available alternatives, and their right to ask questions or decline services. Obtaining informed consent promotes client autonomy, supports ethical practice, and strengthens collaborative decision-making. Maintaining clear communication and respecting client rights are essential components of professional behavior analysis and are important topics covered on the BCBA certification examination.

Question 5. After several weeks of intervention, data show that the target behavior has steadily decreased while the replacement skill continues to increase. Based on these results, what should the behavior analyst do next?

A. Continue monitoring the data, evaluate treatment effectiveness, and make evidence-based adjustments only if needed.

B. Stop collecting data because improvement has already occurred.

C. Change the intervention immediately without reviewing additional information.

D. Ignore future performance because the treatment has been successful once.

Correct Answer: A. Continue monitoring the data, evaluate treatment effectiveness, and make evidence-based adjustments only if needed.

Explanation:
Behavior analysts use ongoing data collection to evaluate treatment effectiveness and guide clinical decision-making. Even when intervention results are positive, continued monitoring helps ensure that behavior change is maintained over time and allows early identification of any changes in performance. Decisions about modifying, fading, or continuing interventions should be based on objective data rather than assumptions. Data-based decision-making is a defining characteristic of applied behavior analysis because it supports effective, individualized, and scientifically sound treatment. This principle is consistently emphasized throughout the BCBA certification examination.