Scope of Competence in ABA: Understanding the Boundaries of What You Should Do, Not Just What You Can Do

Overview & Clinical Significance

The distinction between scope of practice and scope of competence is one of the most critical yet frequently misunderstood concepts in applied behavior analysis. While scope of practice defines the broad range of activities that a credentialed behavior analyst is legally authorized to perform, scope of competence defines the narrower range of activities that a specific individual practitioner is actually qualified to perform based on their training, education, supervised experience, and ongoing professional development. This keynote presentation by Tyra Sellers brings this distinction into sharp focus with a message that is both simple and profound: just because a behavior analyst can does not mean all behavior analysts can.

The clinical significance of this topic is immediate and practical. Every day, behavior analysts face decisions about whether to accept clients, take on new treatment challenges, enter unfamiliar service settings, or address conditions and populations outside their training. The pressure to say yes is considerable. Waitlists are long, families are desperate for services, organizations need to fill caseloads, and the desire to help is genuine. But saying yes to a case or challenge that exceeds one's competence is not helping; it is creating risk for the client and the practitioner alike.

Sellers addresses this tension directly, providing a framework for evaluating one's own scope of competence and making informed decisions about when to accept, refer, or seek additional training. The presentation is grounded in the ethical standards of the profession while acknowledging the practical realities that make scope-of-competence decisions difficult. It is not a lecture about what practitioners should not do; it is a guide to understanding what each practitioner is uniquely positioned to do well and how to expand that capability over time.

The clinical consequences of practicing outside one's scope of competence range from ineffective treatment to active harm. A behavior analyst who accepts a client with a complex medical condition without adequate training in that area may miss critical variables that affect treatment outcomes. A practitioner who begins providing services in a school setting without understanding the educational system's legal and procedural requirements may design interventions that conflict with the client's educational plan. A clinician who attempts to treat a condition they have only read about but never treated under supervision may misapply techniques in ways that worsen the client's situation.

Sellers's keynote is introduced by Dr. Stacie Bancroft, whose opening remarks contextualize the presentation within the broader themes of the conference. Together, these remarks and the keynote establish scope of competence as a foundational concept that touches every aspect of ethical and effective practice in ABA.

Background & Context

The concept of scope of competence has deep roots in healthcare ethics and professional regulation. Medical professionals, psychologists, counselors, and other healthcare providers have long grappled with the tension between the broad authorization granted by professional credentials and the more limited competencies developed through specific training and experience. Behavior analysis, as a relatively young profession compared to medicine or psychology, is still developing its understanding of how scope of competence applies to the diverse and expanding range of activities that behavior analysts undertake.

The BACB's credentialing system defines a scope of practice for BCBAs, BCaBAs, and RBTs that is intentionally broad. Behavior analysts may work with individuals across the lifespan, across diagnostic categories, across service settings, and across a wide range of presenting concerns. This breadth reflects the power and generality of behavior analytic principles, which are applicable to virtually any situation involving human behavior. However, this breadth also creates a trap: the assumption that because the credential authorizes a wide range of activities, any individual holding the credential is competent to perform all of those activities.

Tyra Sellers challenges this assumption directly. The field's expansive scope of practice is a strength in that it allows behavior analysts to contribute across many domains. But it becomes a liability when practitioners interpret it as blanket authorization to practice in areas where they lack specific training and supervised experience. The distinction is between what the profession can do collectively and what any individual practitioner should do based on their individual competencies.

Several factors in the current landscape make scope-of-competence decisions particularly challenging. The demand for ABA services, especially for autism spectrum disorder, far exceeds the supply of qualified practitioners. This creates pressure on individual practitioners to accept cases and take on challenges for which they may not be fully prepared. Organizations facing waitlists and revenue targets may encourage practitioners to expand their caseloads without ensuring that adequate training and supervision are in place. Insurance and funding structures that reimburse for specific services may incentivize practitioners to provide those services regardless of whether they fall within their personal competence.

The expansion of ABA into new service areas, including organizational behavior management, behavioral gerontology, behavioral pediatrics, school-based services, and telehealth, has further complicated scope-of-competence decisions. A BCBA who completed their training in a clinic-based early intervention program has a fundamentally different competency profile than a BCBA who trained in a school setting or an organizational consulting firm. Yet all hold the same credential and operate under the same scope of practice. Sellers's presentation helps practitioners navigate this complexity by providing a structured approach to self-evaluation and competence expansion.

The conference context, with Dr. Bancroft's introductory remarks addressing community-wide considerations, underscores that scope of competence is not just an individual concern but a professional culture issue. The field's norms around how practitioners discuss their limitations, seek help, and support each other's development are as important as any individual's self-assessment skills.

Clinical Implications

Practicing within one's scope of competence is not merely an ethical formality; it has direct and measurable effects on clinical outcomes. When practitioners operate within their areas of genuine expertise, assessments are more accurate, interventions are more precisely designed, treatment integrity is higher, and outcomes are more favorable. When practitioners step outside their competence, each of these dimensions is compromised.

Consider the clinical implications of assessment accuracy. A behavior analyst conducting a functional behavior assessment for a client with complex communication needs must understand augmentative and alternative communication systems, the relationship between communication deficits and problem behavior, and the specific assessment adaptations required for clients who cannot provide verbal self-report. A practitioner without this specialized knowledge may conduct a technically adequate functional assessment that nonetheless misses the most important maintaining variables because they lack the competence to recognize them.

Intervention design is similarly affected. A behavior analyst designing a feeding intervention for a young child with food selectivity must understand the medical, sensory, and behavioral dimensions of feeding challenges. Without specialized training in pediatric feeding, the practitioner may implement an intervention that is contraindicated given the child's medical history, or they may fail to recognize signs that the feeding challenge has a medical etiology requiring referral rather than behavioral intervention. The potential for harm in such situations is real and significant.

Treatment integrity, the degree to which interventions are implemented as designed, is also influenced by scope of competence. When a BCBA is designing interventions outside their expertise, the procedures they develop may be ambiguous, overly complex, or based on incomplete understanding of the relevant variables. This leads to lower treatment integrity among the team members implementing the plan, which in turn leads to poorer outcomes for the client.

The clinical implications extend to supervision. A supervisor can only effectively supervise activities that fall within their own scope of competence. When a BCBA is supervising an RBT who is implementing an intervention that the BCBA has limited experience with, the supervision is compromised. The supervisor may not recognize implementation errors, may provide incorrect corrective feedback, or may miss opportunities for refinement that a more competent supervisor would identify.

Sellers's presentation emphasizes that scope-of-competence awareness is not about limitation; it is about optimization. When practitioners accurately assess their competencies and make decisions accordingly, they provide the best possible care to the clients they serve, and they create appropriate referral pathways for clients who need expertise they cannot provide. This benefits the entire system by matching clients with the most qualified practitioners available.

The clinical culture around scope of competence also affects interprofessional collaboration. When behavior analysts are transparent about their competency boundaries, they build trust with other professionals and create conditions for effective collaboration. When they overrepresent their competencies, they risk providing substandard care and damaging the profession's reputation with collaborating disciplines.

Ethical Considerations

The BACB Ethics Code for Behavior Analysts addresses scope of competence directly and through several related standards that together create a comprehensive ethical framework for competence-based practice.

Code 1.05 is the primary standard addressing professional competence. It directs behavior analysts to provide services, teach, and conduct research only within the boundaries of their competence, based on their education, training, supervised experience, and appropriate professional experience. This standard is unambiguous: competence is defined by what the individual practitioner has actually been trained and supervised to do, not by what their credential theoretically authorizes.

Code 1.05 also addresses the situation where a practitioner needs to develop competence in a new area. It permits behavior analysts to provide services in emerging areas of practice when they undertake appropriate study, training, supervised experience, consultation, or professional experience. This provision is critical because it recognizes that competence is not static. Practitioners can and should expand their scope of competence over their careers. But this expansion must be systematic, supervised, and grounded in genuine learning, not in assumption or overconfidence.

Code 2.01, directing behavior analysts to provide effective treatment, is relevant because effective treatment requires competent delivery. A practitioner who accepts a case outside their competence is unlikely to provide the most effective treatment available, which represents a failure to meet the standard established by this code.

Code 2.04, addressing third-party involvement in services, is relevant when organizational pressures influence scope-of-competence decisions. When an employer or funding source pressures a practitioner to take on cases or activities outside their competence, the practitioner faces a conflict between organizational expectations and ethical obligations. The Ethics Code is clear that ethical obligations take precedence.

Code 1.06, addressing maintaining competence, creates an ongoing obligation to remain current in one's areas of practice. This standard recognizes that competence can erode over time if not actively maintained. A practitioner who was competent in a particular area five years ago but has not practiced in that area since may no longer be competent.

Code 2.13, addressing referral, is relevant because appropriate scope-of-competence evaluation sometimes leads to the conclusion that the best course of action is to refer the client to a practitioner with the needed expertise. The ability to make and facilitate appropriate referrals is itself a competency that all behavior analysts should possess.

Sellers's presentation weaves these ethical standards into a practical decision-making framework that practitioners can apply in their daily work. The framework moves beyond recitation of code numbers to help practitioners understand how to evaluate specific situations against these standards and make informed decisions. The presentation also addresses the emotional and professional challenges of admitting limitations, acknowledging that the culture of the field sometimes implicitly rewards practitioners who take on everything rather than those who thoughtfully evaluate their competence boundaries.

The ethical analysis is further enriched by the conference context, with Dr. Bancroft's opening remarks setting the stage for a community-wide conversation about how the field can better support competence-based practice at the individual and systemic levels.

Assessment & Decision-Making

Evaluating one's scope of competence requires a structured self-assessment process that Sellers outlines in her presentation. This process involves multiple steps and should be applied whenever a practitioner faces a decision about accepting a new client, entering a new service area, or taking on a clinical challenge outside their typical practice.

The first step is honest self-inventory. What specific populations, conditions, settings, and interventions have you been trained in? What have you practiced under supervision? What do you have ongoing experience with? This inventory should be specific rather than general. Being trained in ABA is not the same as being trained in pediatric feeding, organizational behavior management, or behavioral assessment of individuals with dual diagnoses. The inventory should distinguish between areas of deep competence, where the practitioner has extensive training and experience, areas of developing competence, where training is in progress, and areas of non-competence, where the practitioner has little or no specific preparation.

The second step is evaluation of the specific demands of the situation. What does this client, case, or activity require? What specific knowledge, skills, and experience are needed to serve this client effectively and safely? This evaluation requires enough knowledge to know what you do not know, which can itself be a challenge. When evaluating a case in an unfamiliar area, consultation with a more experienced colleague can help identify the specific competencies required.

The third step is gap analysis. Where do the demands of the situation exceed the practitioner's current competencies? How significant are these gaps? A minor gap that can be addressed through consultation or brief additional training is different from a major gap that would require extensive education and supervised experience to close.

The fourth step is decision-making. Based on the gap analysis, the practitioner can choose among several options: accept the case within their scope of competence and arrange consultation or co-treatment for aspects outside their competence; accept the case with a plan for supervised competence development; refer the case to a more qualified practitioner; or decline the case. Each of these options may be appropriate depending on the circumstances.

Sellers describes at least two specific strategies for expanding one's scope of competence. These expansion strategies recognize that the field needs practitioners who are willing to grow but does so responsibly. Competence expansion involves identifying specific new areas of practice, seeking appropriate training and education, arranging supervised experience with a practitioner who is already competent in the area, gradually increasing independence as competence develops, and documenting the process. This structured approach ensures that competence expansion is deliberate and safe rather than improvised.

The decision-making framework also includes consideration of systemic factors. What resources are available in the practitioner's community? Is there a more qualified practitioner to refer to? If not, is the risk of providing services outside one's full competence justified by the absence of alternatives? These questions do not have easy answers, but the framework helps practitioners think through them systematically rather than making intuitive decisions that may be influenced by confidence bias, organizational pressure, or the desire to help.

What This Means for Your Practice

Every behavior analyst should conduct a scope-of-competence self-assessment as part of their ongoing professional development. This is not a one-time exercise but a regular practice that should be updated as you gain new competencies, encounter new clinical challenges, and recognize areas where your knowledge or skills have become outdated.

Create a written competency inventory that lists your specific areas of expertise, developing competencies, and areas outside your competence. Review this inventory annually and update it based on your professional development activities, supervised experiences, and clinical practice. Share it with your supervisor or a trusted colleague for external validation.

Develop a referral network of colleagues with complementary competencies. Knowing who to refer to is itself a critical competency. Build relationships with practitioners who specialize in areas outside your expertise so that when you encounter a case that exceeds your competence, you can facilitate a smooth and timely referral. This is not a sign of weakness; it is a hallmark of ethical, client-centered practice.

When you identify areas where you want to expand your competence, develop a structured plan that includes specific training goals, identified learning resources, arranged supervision or consultation, and a timeline. Approach competence expansion with the same rigor you would apply to a clinical intervention: define the target, implement the plan, collect data on your progress, and adjust as needed.

Advocate within your organization for a culture that values competence-based practice over volume-based practice. This means supporting practitioners who decline cases outside their competence, investing in professional development, and ensuring that supervision structures match supervisors with cases in their areas of expertise. The culture shift starts with individual practitioners who model transparent competence evaluation in their daily practice.