Scope of Competence in ABA, Explained

Scope of competence is the set of tasks you can actually do well with clients. It is narrower than what your credential lets you do. It is built from your training, your supervised practice, and your track record on a real skill.

This matters in ABA, short for applied behavior analysis, a therapy built on learning science. A certificate does not prove you can do everything. A BCBA (a board certified behavior analyst who plans therapy) may be legally allowed to take a case. But if they have never been trained or coached in that specific area, they are working past their competence. That is where clients get hurt.

Competence is smaller than what your license allows#

Many speakers make the same point. Scope of practice is the wide field your credential covers. Scope of competence is the smaller circle of things you have proven you can do. Every clinician sits somewhere inside that bigger field, and no one covers all of it.

Dr. Clelia Sigaud frames it with a simple picture. The competence circle always sits inside the practice circle. You can be licensed to treat a behavior and still lack the training to treat it safely. She repeats the same rule in her talk on anxious avoidance. She tells clinicians to ask if they had the coursework and supervised hours for that one area first.

Scope of competence is going to always be smaller than scope of practice for us as behavior analysts... a scope of competence is what a specific individual professional can actually do well enough to do with clients.

From the talk. Dr. Clelia Sigaud

What the ethics code actually asks of you#

The rule is not vague. Mellanie Page reads it straight from the BACB code, the board that certifies behavior analysts. You practice only within your scope of competence. That scope is set by your education, training, supervised experience, credentials, and professional experience. All five pieces count together.

Patricia Lund points to code section 1.05 in her grief work. If you are not a mental health practitioner, you do not do mental health practitioner tasks. She was honest that this scared her when she started studying grief and loss. The code gave her a clear line to stand behind.

Dr. Kaci Ellis shows how the same line works in schools. A behavior tech should not be writing lesson plans or teaching reading. She even suggests a contract you agree to up front. Then when someone asks you to overstep, you can point back to the code instead of arguing in the moment.

Competence is built in stages, not handed to you once#

Page's biggest idea is that competence grows. It is not a switch that flips on the day you pass a test. She walks through stages. You start with foundational knowledge. Then you get guided practice with feedback. Then you reach independent performance, where you can do the work safely with no one watching. After that comes upkeep and growth.

This reframes the whole question. You are not asking "am I certified." You are asking "have I actually built and shown this skill." Competence is documented preparation plus some proof you can perform.

None of us are eternally competent, right? The science is constantly evolving. And so our competence also needs to evolve with it.

From the talk — Mellanie Page

Knowing where your job ends#

A clear scope of competence is also about restraint. Several speakers describe the moment you must say no.

Patricia Lund is firm that behavior staff are not grief counselors. Helping someone process their feelings of grief belongs to a therapist. What stays in scope is tracking how behavior changes and responding with basic human kindness. Tricia Lund draws the same line when she trains front-line staff. Training staff to be compassionate is fine. Training them to counsel is not.

You're not a counselor. I'm not asking you to be a counselor. I am asking you to be a compassionate person and respond with compassion.

From the talk. Tricia Lund

Dr. Kaci Ellis draws the same edge in schools. A behavior tech is not there to give academic instruction. Expecting one to just know how to teach a subject pushes past their competence and can hurt the student.

Both overconfidence and underconfidence carry risk#

Judging your own competence is a balancing act. Dr. Tyra Sellers says the code asks you to keep checking your clinical and supervisory skills over time. She warns that the danger cuts both ways.

Overconfidence is the obvious problem. You take a case you are not ready for. But underconfidence is a real cost too. If you never trust yourself, you never try new things, and you never grow. Sellers wants supervisors to model honest self-checking so trainees learn to do it too.

There's risk. There's risk if you're overconfident... But there's also risk if you're underconfident because you're unlikely to take risks to try some things.

From the talk. Dr. Tyra Sellers

You own the job of growing your competence#

Sticking to your scope does not mean staying small forever. Page argues you have a duty to expand it on purpose. You do not just refer every hard case away. You take ownership and build the skill through mentors, reading, and professional development.

Nicole Stewart shows what this looks like in practice. To serve clients with ADHD well, a BCBA has to understand the diagnosis. ADHD is a medical condition, so real competence there means learning the medical side. Continuing education is one of the most engaging ways to keep sharp and to refresh on topics you already feel good about. This idea of stretching your competence in a specific setting is the heart of School Collaboration as an Area of Competence - Applied 2022. Page turns it into a full framework for teaching a topic in Beyond 1:1: The Ethical Path to Creating a Scalable Course as a BCBA.

What the research says#

The field is starting to name this gap in print. Brodhead, Quigley, and Wilczynski called for a wider conversation about competence. Behavior analysis defined its scope of practice, but rarely talked about what each person can actually do well.

Brodhead, M. T., Quigley, S. P., & Wilczynski, S. M. (2018). A Call for Discussion About Scope of Competence in Behavior Analysis. Behavior Analysis in Practice, 11(4), 424-435. https://doi.org/10.1007/s40617-018-00303-8

Weak training and oversight can push clinicians toward harsher procedures when gentler options exist. One team built a review panel to catch this before it reached clients.

Logue, J. J., Hustyi, K. M., Toby, L. M., & Outlaw, E. E. (2023). Promoting Ethical and Evidence-Based Practice through a Panel Review Process: A Case Study in Implementation Research. Behavior Analysis in Practice, 18(3), 861-874. https://doi.org/10.1007/s40617-023-00807-y

Competence also has to travel with new service models. A telehealth measure helps make sure direct staff stay inside their competence when therapy moves to a screen.

Nohelty, K., Hirschfeld, L., & Miyake, C. (2021). A Measure for Supporting Implementation of Telehealth Direct Therapy With Treatment Integrity. Behavior Analysis in Practice, 14(2), 422-433. https://doi.org/10.1007/s40617-020-00543-7

Frequently asked questions#

What is the difference between scope of practice and scope of competence?

Scope of practice is everything your credential and license allow. Scope of competence is the smaller set of tasks you have actually trained for and shown you can do well. Your competence always sits inside your practice.

How do I know if something is outside my scope of competence?

Check three things. Did you get the coursework or training for it. Did you practice it under supervision. Can you do it safely on your own now. If any answer is no, you are likely reaching past your competence.

Can I expand my scope of competence?

Yes, and many clinicians say you should. You grow it on purpose with mentors, supervised practice, current literature, and continuing education. Just build the skill first, then take the case, not the other way around.