The dynamic interactional approach is a rehabilitation framework built on the idea that cognitive performance is not a fixed property of the brain but instead emerges from the ongoing interaction among a person’s processing strategies, the demands of the task at hand, and the surrounding environment. Developed primarily within occupational therapy by Joan Toglia, the model shifts clinical attention away from isolated test scores and toward how individuals learn, adapt, and transfer strategies across real-world situations. That shift has practical consequences for how therapists assess cognitive difficulties, design interventions, and predict recovery after events like traumatic brain injury.
What the Model Actually Proposes
Most traditional cognitive rehabilitation focuses on specific deficits: a person has trouble with memory, so they do memory drills. The dynamic interactional approach rejects that deficit-by-deficit logic. Instead, it treats cognitive performance as something that fluctuates depending on three interacting factors: the person’s own processing capacities and self-awareness, the complexity and structure of the task, and the physical and social context in which the task is performed. Change any one of those three elements and you change performance, sometimes dramatically.
This person-task-environment triad is more than a philosophical stance. It shapes everything the therapist does, from initial evaluation to daily treatment sessions. Rather than asking “How bad is this person’s attention deficit?” the clinician asks “Under what task conditions and in what environments does this person’s attention break down, and what strategies help them compensate?” The answer to the second question is far more useful for designing a treatment plan that actually transfers to everyday life. Research on cognitive flexibility supports this framing: human performance on problem-solving tasks is affected specifically by the conditions relevant to the strategy a person is using, not by environmental changes in general.1Ergonomics. Cognitive flexibility and adaptability to environmental changes in dynamic complex problem-solving tasks
A related insight from developmental science reinforces the rationale: even at the level of genes and brain development, static one-to-one mappings between a biological variable and a behavioral outcome do not hold. Gene expression changes over time, and at every level of analysis, development involves a multilevel, dynamically interacting system.2International Review of Research in Developmental Disabilities. Static Snapshots versus Dynamic Approaches to Genes, Brain, Cognition, and Behavior in Neurodevelopmental Disabilities The dynamic interactional approach applies a version of that same principle at the clinical level: cognition is not a snapshot; it is a moving target shaped by context.
Why Metacognition and Self-Awareness Are Central
One of the most distinctive features of this approach is the emphasis it places on metacognition, the ability to monitor your own thinking and recognize when a strategy is not working. In brain injury rehabilitation, a patient who has no awareness that they are making errors is in a fundamentally different position than one who notices mistakes and can adjust. The dynamic interactional model treats self-awareness not as an afterthought but as a core treatment target.
In practice, therapists using the model deliberately structure tasks so that the gap between a person’s self-prediction and their actual performance becomes visible. If someone predicts they will complete a task easily but then struggles, that discrepancy becomes a therapeutic moment. The therapist uses it to help the person build what clinicians call “online awareness,” the ability to catch errors while they are happening rather than only in hindsight. Case studies of adults with traumatic brain injury found that the Dynamic Interactional Model improved self-care, mobility, and fine motor abilities while also identifying and addressing awareness of deficits in those same domains.3PubMed. Use of the Dynamic Interactional Model in self-care and motor intervention after traumatic brain injury: explanatory case studies
This emphasis on awareness distinguishes the approach from interventions that simply drill compensatory techniques. Teaching someone to use a checklist is useful, but if that person does not recognize situations where the checklist is needed, the technique never gets deployed outside the therapy room.
Dynamic Assessment Versus Standard Testing
Standard cognitive tests give you a score that reflects how someone performs on a given day with no assistance. That score tells you where the person stands relative to a norm, but it says very little about their capacity to improve. Dynamic assessment flips the process. Instead of simply measuring current performance, the clinician introduces structured guidance, feedback, or prompting during the test itself, then observes how much the person’s performance changes in response to that support. The gap between unassisted and assisted performance reveals something static tests miss: learning potential.
This is not just a philosophical preference. In a study of people with acquired brain injury, dynamic assessment of learning ability on a well-known card-sorting task predicted who would eventually reintegrate into the community, while the standard static version of the same test did not.4PubMed. Dynamic assessment of learning ability improves outcome prediction following acquired brain injury That finding matters because clinicians often rely on static test scores to make decisions about discharge, living arrangements, and the intensity of rehabilitation services. If those scores miss people who have strong learning potential despite low current performance, real-world decisions get worse.
Dynamic assessment also changes the therapeutic relationship. In a standard test, the clinician is a neutral observer recording errors. In a dynamic assessment, the clinician is an active participant, probing how much scaffolding a person needs and what types of cues are most helpful. That interaction produces richer clinical information and simultaneously begins the intervention process, blurring the line between assessment and treatment in a way that the dynamic interactional approach considers a feature rather than a flaw.
Strategy Transfer and the Multicontext Treatment Approach
A persistent frustration in cognitive rehabilitation is that gains made in the clinic often fail to carry over to daily life. A person might learn a memory strategy in a quiet therapy room and use it perfectly there, then never apply it at home or at work. The dynamic interactional approach addresses this directly through what is known as the multicontext treatment approach, which systematically varies the surface features of tasks while keeping the underlying cognitive demand constant. The idea is to teach people to recognize the deep structure of a problem, not just the surface details, so they can generalize strategies across settings.
For example, a therapist might teach a planning strategy during a tabletop craft activity, then have the patient apply the same strategy to a meal-preparation task, then to a scheduling problem on a computer. The tasks look completely different, but each one requires the same core cognitive skill: breaking a complex goal into steps and monitoring progress. An exploratory study of this multicontext approach in brain injury patients found that all participants showed positive changes in self-regulatory skills and strategy use across different tasks.5Brain Injury. A multicontext approach to promoting transfer of strategy use and self regulation after brain injury: An exploratory study Interestingly, the same study noted that general awareness of deficits remained unchanged even as strategy use improved, suggesting that different components of metacognition may respond to intervention at different rates.
That finding is worth pausing on. It tells clinicians not to expect a neat, uniform trajectory of recovery. A person can start using strategies more effectively in their daily routines while still lacking the broader self-knowledge that they have cognitive difficulties in the first place. The multicontext approach works on the skills themselves; deeper self-awareness may require longer intervention or different techniques altogether.
Pediatric Assessment Tools
The dynamic interactional approach has been adapted for children through the Dynamic Occupational Therapy Cognitive Assessment for Children, commonly known as the DOTCA-Ch. This tool evaluates cognitive areas including spatial perception, praxis, visuomotor construction, and thinking operations in children aged six to twelve. What sets it apart from conventional pediatric cognitive assessments is its dynamic component: after an initial unassisted performance, the clinician provides mediation and prompting, then observes how the child’s performance changes.6PubMed. The Dynamic Occupational Therapy Cognitive Assessment for Children (DOTCA-Ch): a new instrument for assessing learning potential
For a child who performs poorly on a standard test, the critical clinical question is often whether that poor performance reflects a genuine cognitive limitation or a lack of prior exposure, unfamiliarity with the testing format, or anxiety. The dynamic component helps tease these apart. If the child’s performance improves substantially with guided support, the clinician gains evidence that the child’s learning potential is higher than the static score suggests, which can change recommendations about educational placement and therapy goals.
An investigation of the tool’s use in Australian occupational therapy practice examined whether the DOTCA-Ch, originally developed in Israel, was culturally suitable and comprehensive enough to serve as a stand-alone cognitive assessment in a different cultural context.7Australian Occupational Therapy Journal. Dynamic Occupational Therapy Cognitive Assessment for Children: Perceived utility in Australian occupational therapy practice The dynamic nature of the tool was viewed as a valuable clinical feature, though the study also raised questions about whether a single assessment could be comprehensive enough across all the cognitive domains relevant to occupational therapy.
Cross-Cultural Advantages of the Dynamic Approach
One of the more compelling arguments for dynamic assessment is its usefulness across cultural contexts. Standard cognitive tests are often normed on specific populations and carry assumptions about prior schooling, language proficiency, and familiarity with test-taking conventions. A child who has had limited formal education, who speaks multiple languages, or who comes from a non-Western educational tradition may perform poorly on a static test for reasons that have nothing to do with cognitive ability.
Dynamic assessment methods use a test-teach-retest format that focuses on learning processes rather than existing knowledge. By evaluating how much a child improves with instruction, clinicians can distinguish between a lack of prior exposure and genuine cognitive difficulty. A review of cross-cultural pediatric neuropsychological assessment described dynamic assessment as a culturally responsive alternative to static testing, one that promotes equity in cognitive evaluation by emphasizing developmental potential rather than knowledge shaped by cultural experience.8PubMed Central. Cross‐Cultural Paediatric Neuropsychological Assessment: Key Considerations
This matters in increasingly multilingual and multicultural clinical settings, where a therapist might see children from a dozen different linguistic and educational backgrounds in a single week. Relying exclusively on static, norm-referenced tests in that context risks systematically underestimating the abilities of children from underrepresented groups. Dynamic assessment does not eliminate cultural bias entirely, but it shifts the focus toward something more universal: the capacity to learn from guided interaction.
Broader Roots in Interactionist Psychology
The dynamic interactional approach in rehabilitation has intellectual cousins in other branches of psychology. In personality psychology, a tradition known as dynamic interactionism has been developing for decades, rooted in Gestalt psychology. The core claim is similar: behavior cannot be understood by looking at either the person or the situation in isolation. It is the ongoing, reciprocal interaction between the two that produces what we observe. In social psychology, a parallel thread runs through social identity theory and self-categorization theory, which examine how the interaction between the individual and the group gives meaning to the social environment.9European Journal of Personality. Interactionism in Personality and Social Psychology: An integrated Approach to Understanding the Mind and Behaviour
These streams of thought rarely cite each other directly, but they share a deep skepticism toward reductive explanations. A personality psychologist working in the interactionist tradition would bristle at the idea that someone “is” extraverted in some context-free sense, just as a rehabilitation therapist using the dynamic interactional model would bristle at the idea that a brain injury patient “has” a fixed attention deficit. Both would insist that the behavior depends on the situation, the person’s interpretation of the situation, and the strategies they bring to it.
The connection extends to motor control as well. Frameworks like the SMART COMPASS model, which integrates concepts from aging, motor learning, and cognitive development, emphasize that neural, environmental, and behavioral factors jointly shape both motor and cognitive performance across the lifespan.10Frontiers in Human Neuroscience. Scaffolding theory of maturation, cognition, motor performance, and motor skill acquisition: a revised and comprehensive framework for understanding motor-cognitive interactions across the lifespan The underlying logic is the same: systems interact dynamically, and isolating one component distorts the picture.
Why Adoption Has Been Slow
Despite its appeal, the dynamic interactional approach faces real implementation challenges. Dynamic assessment takes more time than handing someone a standard test and scoring it. It requires clinical judgment in the moment, the ability to adjust prompts and scaffolding based on what the person is doing right now, which means the therapist needs both strong theoretical grounding and practical skill. You cannot automate this process easily, and training new clinicians to use it well takes sustained mentorship.
Researchers working on dynamic systems approaches to personality have described analogous challenges in their own field: implementing this kind of framework requires new conceptual models, specific longitudinal research designs, and complex data analytical methods.11European Journal of Personality. New Directions in the Conceptualization and Assessment of Personality—A Dynamic Systems Approach In clinical settings, the obstacles are more pragmatic. Insurance reimbursement systems often favor standardized tests with clear-cut scores over dynamic assessments that produce qualitative observations. Caseload pressures mean therapists may simply not have the time for the richer but slower assessment process.
Technology may help with some of these barriers. Computerized adaptive testing combined with dynamic assessment principles could allow clinicians to deliver structured mediation and track learning curves more efficiently. The integration of these technologies has been proposed as a way to create assessment tools that are both dynamic and scalable.12IGI Global. Technological Tools for the Intervention and Computerized Dynamic Assessment of Executive Functions Early-stage work on virtual reality in rehabilitation has shown mixed results for knowledge translation: while training interventions can improve therapists’ confidence and perceived skills with new technology, changes in actual clinical decision-making have been harder to demonstrate.13PubMed Central. Barriers, Facilitators and Interventions to Support Virtual Reality Implementation in Rehabilitation: A Scoping Review The gap between knowing how to use a tool and knowing when and why to deploy it in a specific clinical moment is exactly the kind of challenge the dynamic interactional approach itself is designed to address.
Common Misconceptions About the Approach
One frequent misunderstanding is that the dynamic interactional approach is simply “teaching to the test.” Because the therapist provides support during assessment, critics sometimes argue that the resulting scores are inflated or meaningless. But the point of dynamic assessment is not to produce a higher number. It is to reveal the type and amount of support a person needs to succeed, which is clinically actionable information that a static score cannot provide. A person who improves dramatically with minimal cueing is in a very different situation from one who shows no change even with extensive scaffolding, yet both might receive the same low score on a standard test.
Another misconception is that the approach is only for people with brain injuries. While that is where much of the foundational research has been done, the logic applies broadly. Any situation where a person’s cognitive performance fluctuates depending on context, task demands, or available support is a situation where the dynamic interactional framework has something useful to say. Pediatric cognitive assessment, geriatric care, educational testing for multilingual students, and vocational rehabilitation all involve the same core question: what can this person do with the right support, and how do we systematically build toward independent performance?
A subtler misconception is that emphasizing person-task-environment interaction means denying that some people have more severe cognitive impairments than others. The model does not claim that context is everything and brain damage is nothing. It claims that the severity of a deficit only becomes meaningful when you specify the conditions under which it manifests. Two people with similar lesion locations can look radically different in everyday function depending on the complexity of their daily routines, the support available in their environments, and the strategies they have been taught to use. The model takes impairment seriously, but refuses to treat it as destiny.
How Motor and Cognitive Systems Intersect in the Framework
The dynamic interactional approach is sometimes pigeonholed as purely a cognitive intervention, but the research tells a more integrated story. The case studies that demonstrated the model’s effectiveness in traumatic brain injury included improvements in both cognitive domains like self-care planning and motor domains like mobility and graphomotor skills.14PubMed. Use of the Dynamic Interactional Model in self-care and motor intervention after traumatic brain injury: explanatory case studies This makes sense within the model’s logic: if performance emerges from the interaction among person, task, and environment, there is no clean line between a “motor” task and a “cognitive” task. Getting dressed requires planning, sequencing, spatial awareness, and physical coordination simultaneously.
Broader frameworks in motor learning reinforce this point. The SMART COMPASS model, for instance, demonstrates how neural, environmental, and behavioral factors jointly shape both motor and cognitive performance from childhood through aging.15Frontiers in Human Neuroscience. Scaffolding theory of maturation, cognition, motor performance, and motor skill acquisition: a revised and comprehensive framework for understanding motor-cognitive interactions across the lifespan For a clinician using the dynamic interactional approach, the practical takeaway is to resist splitting treatment into separate “cognitive” and “motor” tracks. A person relearning to cook after a stroke is doing motor planning, problem solving, sequencing, and self-monitoring all at once. Treating those as separate deficits with separate therapy sessions misses the interaction that defines real-world performance. Designing treatment around meaningful, whole tasks and varying their demands systematically aligns with how motor and cognitive systems actually work together.