By Matt Harrington, BCBA · Behaviorist Book Club · April 2026 · 12 min read

ABA and Sensory Processing: Understanding Automatic Reinforcement, Sensory Systems, and Cross-Disciplinary Practice

Overview & Clinical Significance

For BCBAs working with individuals with autism, developmental disabilities, or sensory processing differences, the intersection of behavior analysis and sensory processing science is one of the most clinically relevant — and most frequently misunderstood — areas of practice. Leila Allen and Danielle Brendle's collaborative presentation addresses this intersection directly, bringing together the behavioral science perspective and the occupational therapy perspective in a way that equips practitioners with practical knowledge that neither discipline fully provides on its own.

The core clinical issue is this: many behaviors that BCBAs encounter in their caseloads — repetitive movements, self-stimulatory behavior, avoidance of certain textures or environments, emotional dysregulation following sensory exposure — have a sensory processing dimension that behavior analytic assessment alone may not fully capture. Sensory processing refers to how the nervous system receives, organizes, and responds to sensory input from the environment and from within the body. Differences in sensory processing are prevalent among individuals with ASD and can function as both antecedents and consequences of the behaviors BCBAs are asked to address.

The automatic function is central to this discussion. From a behavior analytic perspective, automatically reinforced behavior is maintained by sensory consequences that do not depend on social mediation — the behavior produces its own reinforcement. Many behaviors associated with sensory processing differences — spinning objects, hand-flapping, mouthing, rocking — are maintained by automatic reinforcement, and behavior analytic interventions that ignore the sensory reinforcement maintaining these behaviors are likely to be ineffective at best and harmful at worst.

This presentation aims to build foundational knowledge of sensory processing and sensory regulation, provide an understanding of the different sensory systems and their role in daily functioning, and introduce the first steps of developing sensory strategies based on systematic evaluation. For BCBAs, this knowledge supports better functional assessment, more effective collaboration with occupational therapists, and more individually tailored intervention planning.

Background & Context

The relationship between behavior analysis and occupational therapy in the context of sensory processing has been historically complicated. Behavior analysts have, at times, been skeptical of sensory integration theory due to its roots in neurological models that were difficult to operationalize within a behavioral framework. Occupational therapists, conversely, have sometimes viewed behavior analytic approaches to automatically reinforced behavior as insufficiently attentive to the underlying sensory needs driving those behaviors. These disciplinary tensions, while real, have not served clients well.

More recently, there has been meaningful convergence. The behavior analytic literature has increasingly engaged with the automatic reinforcement construct and its implications for assessment and treatment. Research in JABA has examined how sensory characteristics of automatically reinforced behavior can be assessed, how competing sensory stimuli can be used as alternative reinforcers, and how sensory extinction procedures affect self-stimulatory behavior. This work has created a more sophisticated behavior analytic framework for understanding sensory behavior without abandoning the empirical foundations of the discipline.

From the OT side, the development of more operationally defined sensory processing models — including Dunn's Sensory Processing Model and Miller's Sensory Processing Framework — has made sensory assessment more systematic and replicable. These models provide BCBAs with useful conceptual tools for understanding how individual differences in sensory threshold and sensory-seeking or sensory-avoiding profiles affect behavior across contexts.

The eight sensory systems that are relevant to this discussion include the five exteroceptive senses (visual, auditory, olfactory, gustatory, and tactile), the proprioceptive system (input from muscles and joints regarding body position and movement), the vestibular system (input from the inner ear regarding balance and head position), and the interoceptive system (internal body state information including hunger, pain, heart rate, and emotional arousal). BCBAs who understand each of these systems and how differences in their processing can manifest behaviorally are better equipped to conduct functional assessments that capture the full range of variables maintaining behavior.

Clinical Implications

Understanding sensory processing has several direct clinical implications for BCBA practice. First and most importantly, it enriches functional behavior assessment. When conducting an FBA for a behavior with a suspected automatic function, BCBAs should go beyond identifying that the behavior is automatically reinforced and attempt to characterize what sensory input the behavior provides. Is it primarily proprioceptive (heavy work, joint compression)? Vestibular (spinning, rocking)? Tactile (specific textures, pressure)? Understanding the sensory quality of the reinforcer opens more targeted options for identifying alternative sensory activities that can compete with the problem behavior.

Second, sensory processing knowledge improves antecedent analysis. Many behavioral incidents that appear to have social functions — escape, attention, access to tangibles — may have sensory antecedents that are not immediately visible to an observer without sensory processing context. A child who becomes aggressive during transitions may be responding to the sensory overload of moving from a quiet classroom to a noisy hallway. A student who refuses to participate in art activities may be experiencing tactile aversion to certain materials. Identifying these antecedent sensory conditions requires a broader observational framework than typical ABC data collection provides.

Third, sensory processing information is essential for designing effective behavior support plans. Interventions that address the sensory function of behavior — by providing alternative sensory input, modifying the sensory environment, or building sensory regulation capacity — are often more effective and more durable than interventions that address behavior topographically without considering its sensory underpinnings. BCBAs should be familiar with sensory diet concepts as developed in the OT literature — not to implement occupational therapy techniques without appropriate credentials, but to understand the rationale for sensory supports and coordinate their implementation with qualified OT colleagues.

Finally, sensory processing differences affect how learners respond to instructional arrangements. High arousal states associated with sensory overload impair learning, attention, and behavioral flexibility. BCBAs who understand how sensory environments affect the motivating operations that govern learning can design instructional contexts that minimize competing sensory variables and optimize the learner's state for skill acquisition.

Ethical Considerations

The intersection of ABA and sensory processing raises important ethical considerations, beginning with scope of practice. Code 1.06 (Maintaining Competence) requires BCBAs to practice within areas of competence and to seek consultation or refer when a case requires expertise beyond their training. Sensory processing assessment and sensory integration therapy are within the scope of occupational therapy, not behavior analysis. BCBAs who have developed knowledge of sensory processing through professional development are better equipped to collaborate with OT colleagues — but they should not represent themselves as sensory processing specialists or deliver occupational therapy services without appropriate credentials.

Code 2.10 (Collaborating with Colleagues) is directly relevant here. Behavior analysts working with individuals who have significant sensory processing differences should proactively seek collaboration with occupational therapists, communicate clearly about the respective roles and contributions of each discipline, and design joint programming that integrates both behavioral and sensory perspectives. Failure to collaborate when OT consultation would benefit the client may compromise the quality of care and potentially violate the ethics code's provisions regarding effective treatment.

Code 2.14 (Experimental Treatments) should be considered when sensory-based interventions are used. Not all sensory integration approaches have strong empirical support, and BCBAs should evaluate the evidence base for any sensory strategy included in or recommended alongside a behavior support plan. The enthusiasm for sensory-based interventions in some clinical communities has outpaced the evidence for certain specific techniques. BCBAs should apply the same evidence standard to sensory strategies that they apply to all interventions.

Code 2.07 (Culturally Responsive and Individualized Services) is also relevant. Responses to sensory experiences are shaped not only by neurological differences but also by cultural context. What constitutes appropriate sensory behavior in one cultural context may be viewed differently in another. BCBAs should be attentive to these cultural dimensions when evaluating sensory behavior and when designing sensory environments and strategies.

Assessment & Decision-Making

Assessing sensory processing in a behavior analytic context begins with careful functional assessment. The standard FBA procedures — scatter plot, ABC data, structural analysis, and functional analysis — remain essential. However, BCBAs working with individuals who display behaviors with suspected sensory functions should supplement these procedures with systematic observation of sensory-related antecedents and consequences. This includes noting the sensory characteristics of the environment at the time behavioral incidents occur, the sensory properties of the maintaining stimuli identified through functional assessment, and the individual's general profile of sensory reactivity across contexts.

Consultation with an occupational therapist should be a standard recommendation when sensory processing differences are a significant factor in the clinical presentation. OTs can administer standardized sensory assessments — such as the Sensory Processing Measure or the Dunn Sensory Profile — that provide a systematic profile of the individual's sensory threshold in each sensory system. This profile data can directly inform behavior support planning by identifying which sensory systems are most likely to drive the behaviors under assessment.

When sensory information is incorporated into behavior support plans, the plan should specify the hypothesized sensory function of the target behavior, the alternative sensory activities that will be offered as competing reinforcers, the antecedent modifications that will reduce sensory triggers, and the method by which the sensory strategies will be implemented and monitored. BCBAs should work with OT colleagues to identify sensory strategies that are evidence-informed, practically feasible, and aligned with the individual's sensory profile.

Data collection on sensory-related strategies should be integrated into the overall data system. BCBAs should track not only the frequency or intensity of target behaviors but also the context variables that are hypothesized to be sensory antecedents, and assess whether sensory environment modifications or sensory diet activities are associated with changes in the behavioral data. This kind of contextually embedded data collection enables evidence-based refinement of the sensory components of the behavior support plan.

What This Means for Your Practice

BCBAs who deepen their understanding of sensory processing will find that it changes how they look at behavior — not by replacing the behavior analytic framework, but by enriching the range of variables they consider during assessment and intervention planning. If you have clients whose behaviors have a suspected automatic function, investing in a more detailed sensory analysis of those behaviors is a high-yield clinical activity. The result is often a more specific treatment hypothesis, a more targeted alternative reinforcer selection, and a more effective behavior support plan.

From a collaboration standpoint, this knowledge also improves how you work with occupational therapists. When a BCBA can speak knowledgeably about proprioceptive input, sensory threshold differences, and the distinction between sensory seeking and sensory avoidance profiles, the conversation with an OT colleague is more productive. You can have a genuine clinical exchange rather than a parallel assessment process where each discipline operates in its own silo. Families benefit enormously from this kind of integrated team functioning.

For those in supervisory roles, sensory processing is an important knowledge area to develop in supervisees. RBTs and BCaBAs who work directly with clients need to know how to observe for sensory antecedents, how to implement sensory strategies recommended by OT colleagues with procedural fidelity, and how to collect meaningful data on sensory-related variables. Building this knowledge into your supervision curriculum reflects the level of complexity that real-world ABA practice demands.

Part One of this presentation by Leila Allen and Danielle Brendle is explicitly foundational — it establishes the knowledge base from which more advanced sensory strategy development will follow. BCBAs should approach this content as the beginning of an ongoing learning process in this domain, one that is enriched by cross-disciplinary collaboration, continuing professional development, and attentive clinical observation with each new client they serve.