Person-Centered Assistive Technology: Four Principles That Prevent Abandonment
A well-run assistive technology service looks nothing like a showroom or a catalog. It looks like a conversation. Cook and Polgar describe four service-delivery principles that consistently separate programs that deliver lasting results from those that ship devices and hope for the best. Families who recognize these four principles in a clinician or supplier can trust they are in good hands. Families who do not see them should keep looking.
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1. Person-centered, not technology-centered
The first principle is that every recommendation starts with the person, not the device. A person-centered process begins by understanding who the user is, what activities they want to pursue, and what environments they live and work in. The technology comes later, and only as a means to those ends. The opposite approach — leading with a product and trying to fit the person to it — is how most abandoned equipment ends up abandoned. Watch for clinicians who ask about daily routines, family roles, and personal goals before they mention any brand or model.
2. Focus on functional outcomes and participation
The second principle is that success is measured by what the user can now do in real life, not by the sophistication of the device. A communication device is not successful because it has a thousand vocabulary items; it is successful because the child can now order lunch in the cafeteria without a teacher translating. A wheelchair is not successful because it has power tilt and recline; it is successful because the adult now attends their weekly choir rehearsal. If a device is not visibly changing participation in the activities the user cares about, it has failed the outcome test, regardless of its specifications.
3. Evidence-informed, not tradition-informed
The third principle is that recommendations should be grounded in research, not in "this is what we always do." Evidence-informed practice means the clinician has looked at which approaches have actually been shown to work for users with similar needs, and can explain why they are recommending this specific device over alternatives. Families can ask the question directly: "What evidence do you have that this is the right fit for a situation like ours?" A good clinician will not be offended — they will appreciate that you are taking the decision seriously.
4. Ethical and sustainable
The fourth principle is that assistive technology services must be delivered ethically and in a way that can be sustained over time. The RESNA Code of Ethics — the standard for the assistive technology field in North America — requires clinicians to avoid conflicts of interest, refuse kickbacks, maintain confidentiality, and refer when a case is beyond their expertise. Sustainability means the device will still work, still fit, and still be supported six months from now. A device that cannot be serviced locally, cannot be funded again when it breaks, or relies on a single vendor that may disappear is not sustainable, even if it looks good at the point of sale.
How to recognize these principles in practice
Ask three simple questions at your first appointment: "How will you decide what is right for us?" "How will we know it worked?" "What happens in six months when something breaks or changes?" Good clinicians will answer with specifics — a process, measurable outcomes, a follow-up plan. Weak clinicians will answer with brochures. That single meeting tells you more about the likely outcome than any product demo.
Key takeaways
The four principles — person-centered, outcome-focused, evidence-informed, and ethically sustainable — are the backbone of good assistive technology practice. They do not require expensive equipment or rare expertise. They require a clinician who takes the time to understand the person first and who treats the service as a long-term relationship rather than a transaction.
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Rehabilitation professionals have long known that selecting the technically correct device is not enough. Studies consistently show that approximately 30% of assistive devices are abandoned within the first year of use. The devices usually work. The problem is almost never the engineering. Marcia Scherer's Matching Person and Technology model — one of the most studied frameworks in the field — was built specifically to address the factors that functional assessments miss: the personal, motivational, and psychosocial ones.
