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Board Certified Behavior Analyst interview questions and how to answer them

A BCBA interview is really a clinical judgment test wearing a job interview's clothes. The clinical director wants to hear how you think when the data flatlines, a parent pushes back, or an RBT is quietly running a program wrong. Expect case scenarios, expect ethics questions, and expect someone to ask how you feel about billable hours.

11 questions7 minute read

Part 1

1.Walk me through how you'd start with a brand new client after intake.

Why they ask

This shows whether you have a repeatable process or you just start teaching whatever seems obvious.

How to answer

  • Review records, prior evaluations and what the caregivers say matters most to them
  • Pick assessments that fit the learner, such as the VB-MAPP for an early learner or AFLS for daily living skills
  • Observe in the settings where problem behavior actually happens before writing anything
  • Draft goals with the family, then build the first programs and train the RBT on them

2.A client's aggression has gone up over the past few weeks even though the plan hasn't changed. What do you do?

Why they ask

Real cases drift. They want to see you check your own treatment before blaming the kid.

How to answer

  • Look at the data first: frequency, time of day, setting, which RBT was on shift
  • Check treatment integrity by watching sessions, since plans often slip without anyone noticing
  • Ask about changes at home or school, sleep, illness and medication, and suggest a medical check if something looks off
  • Revisit the function and update the FBA if the pattern no longer fits

3.How do you decide between a functional analysis and a descriptive assessment?

Why they ask

It tests whether you know the methods and whether you weigh safety and setting instead of picking by habit.

How to answer

  • Start with interviews and ABC data to form a hypothesis
  • Use a functional analysis, such as an IISCA or a traditional analog analysis, when the function is unclear and the setting can run it safely
  • Explain the safety plan, staffing and caregiver consent you'd need
  • Say when you'd skip it, for example severe self-injury without the right support in place
4.How do you supervise RBTs, and how do you handle one who isn't following the plan?

Why they ask

You'll spend a big chunk of your week supervising. Poor supervision is the fastest way to lose techs and clients.

How to answer

  • Use behavioral skills training: explain, model, rehearse, give feedback
  • Run treatment integrity checklists during observations rather than relying on impressions
  • Give feedback privately and specifically, then check again soon
  • Document supervision in line with the BACB requirements and escalate only after coaching has been tried
5.A parent tells you they don't want their child's tantrums ignored anymore. How do you respond?

Why they ask

Caregiver buy-in makes or breaks a plan, and they want to see you adapt instead of lecture.

How to answer

  • Listen for what's behind it, such as embarrassment in public or a sibling copying the behavior
  • Explain extinction bursts plainly, without jargon
  • Offer alternatives that still match the function, like teaching a request for a break or adding more attention earlier
  • Agree on something the family can actually do and review the data together

Part 2

6.Tell me about an ethics dilemma you've faced and what you did.

Why they ask

The BACB Ethics Code comes up constantly in this field, and interviewers want proof you apply it, not just that you've read it.

How to answer

  • Pick a real situation: a dual relationship, a gift from a family, pressure to bill hours a client didn't need
  • Name the part of the code that applied in plain terms
  • Explain who you consulted and what you did
  • Say what you'd do the same or differently now
7.How do you write a goal that an insurance reviewer will approve?

Why they ask

Treatment plans pay for the clinic. A plan that gets denied is lost time for the client and lost revenue for them.

How to answer

  • Tie goals to deficits from standardized assessments and to the diagnosis
  • Write them in measurable terms with a clear mastery criterion
  • Show baseline, progress data and why the requested hours are medically necessary
  • Include caregiver training goals, since many payers expect them
8.What would you do if a skill program has been stuck for weeks?

Why they ask

They want to hear you read a graph and make a decision instead of waiting.

How to answer

  • Check prerequisite skills and whether the target was too big a step
  • Look at prompting and reinforcement: fading too fast, weak reinforcers, prompt dependence
  • Watch a session to rule out integrity problems
  • Change one thing at a time and set a date to review again
9.How do you manage a full caseload without falling behind on reports?

Why they ask

Burnout and late reauthorizations are the classic BCBA failure. They want to know you have a system.

How to answer

  • Keep a calendar of every reauthorization and progress report due date
  • Update graphs and notes weekly in CentralReach or whatever system you use, so reports aren't built from scratch
  • Block admin time and protect it
  • Flag early when a caseload is too heavy rather than letting quality slip
10.Why do you want to work here rather than somewhere else?

Why they ask

ABA companies worry about BCBAs leaving after a few months. They're testing whether you've looked at what they actually do.

How to answer

  • Mention something specific about their model: clinic-based, school contracts, early intervention, adult services
  • Connect it to the clients you want to serve and your fieldwork
  • Ask something that shows you care about supervision quality or caseload size

Part 3

11.Tell me about a time you disagreed with another professional on a case, like a speech therapist or teacher.

Why they ask

BCBAs work on teams where other disciplines see the client differently. Territorial BCBAs cause friction.

How to answer

  • Describe the disagreement fairly, including their reasoning
  • Explain how you used data or a joint observation to find common ground
  • Show where you changed your plan because of their input

Questions to ask them

Ask at least two. It shows you're picking them too.

  • How many clients and RBTs would I carry, and does the billable hours target count drive time?
  • What does support look like for a newer BCBA when a case gets difficult?
  • Who handles authorizations and credentialing with insurers, and how long does it usually take a new BCBA to start billing?
  • How do you measure treatment integrity across the clinic?
  • Why did the last BCBA in this role leave?
Career guideWhat a Board Certified Behavior Analyst does, and what it pays
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Skills to learnBoard Certified Behavior Analyst skills: what to learn first
Read the roadmap →

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