Disability Guardianship: History, Misuse, and Protecting Client Rights in ABA Practice

Overview & Clinical Significance

Guardianship is among the most consequential legal arrangements that affects the clients BCBAs serve. When an individual is placed under guardianship, their legal personhood is substantially diminished: their right to make decisions about their medical care, living situation, finances, and daily activities may be transferred entirely to another person. The history of guardianship in disability services is marked by cases of profound misuse—arrangements initially designed to protect individuals from exploitation that became instruments of control, isolation, and abuse.

For BCBAs, this history is directly relevant because guardianship affects the consent process, the treatment decision hierarchy, and the power dynamics within which clinical work occurs. A guardian who makes decisions against the client's expressed preferences is not always acting in abuse—but a BCBA who is aware of guardianship's historical misuse is better positioned to recognize when a guardianship arrangement may be functioning to suppress rather than protect the client's interests.

Kerry et al. (2026) developed and validated the Outcomes of Wellbeing and Distress Scale for adults with intellectual disabilities, providing a standardized tool for measuring wellbeing and distress—outcomes that are often systematically unmeasured in guardianship contexts where the emphasis is on behavioral compliance rather than subjective quality of life. The clinical significance of measuring wellbeing directly, not inferring it from behavior, is substantial for clients in guardianship arrangements.

Background & Context

Guardianship law in the United States developed in the 19th and early 20th centuries in the context of what was then called 'lunacy' and 'incompetency' law, designed primarily to manage property of individuals deemed incapable of doing so themselves. The application of these frameworks to people with intellectual and developmental disabilities occurred largely as a matter of administrative convenience—disability diagnoses became a proxy for incapacity without individualized assessment.

The deinstitutionalization movement of the 1970s and 1980s created pressure for guardianship reform, as disability rights advocates argued that institutional placement had been justified in part by guardianship arrangements that stripped individuals of the capacity to refuse. The Americans with Disabilities Act (1990) and the United Nations Convention on the Rights of Persons with Disabilities (2006) provided international frameworks for supported decision-making as an alternative to guardianship, but implementation has been uneven.

Hoogstad et al. (2026) assessed PTSD in adults with severe or moderate intellectual disability, finding that validated diagnostic instruments can be adapted for use with this population—a finding with direct relevance to guardianship contexts, where the history of institutional and familial abuse may have produced trauma presentations that are mistaken for developmental symptoms and used to justify ongoing guardianship.

Alnahdi & Morin (2026) validated an Arabic version of the Attitudes Toward Intellectual Disability questionnaire, demonstrating that cross-cultural measurement of disability attitudes is feasible. The cultural context of guardianship attitudes is significant: in some cultural contexts, family guardianship is viewed as an expression of care; in others, it may intersect with harmful patriarchal or ableist norms. BCBAs must navigate these cultural dimensions without imposing Western disability rights frameworks uncritically.

Clinical Implications

The clinical implications of guardianship history for BCBAs are distributed across the entire service cycle. At intake, BCBAs should document who holds decision-making authority and, where possible, assess the degree to which the guardian's decisions align with the client's expressed preferences. This is not an adversarial process—it is a quality-assurance step that ensures the treatment plan reflects the client's actual interests.

During active treatment, BCBAs should monitor for signs that guardian decisions are restricting the client's participation in preference-based activities, limiting the client's social network, or directing treatment toward goals that primarily serve caregiver convenience rather than client development. Kerry et al. (2026) developed a wellbeing and distress scale specifically for adults with intellectual disabilities, which provides BCBAs with a validated tool to measure client wellbeing independently of caregiver or guardian report—critical when the guardian's interests may not fully align with the client's.

Supported decision-making (SDM) is the alternative to plenary guardianship that disability rights advocates have promoted since the 1990s. Under an SDM arrangement, the individual retains legal personhood and makes their own decisions, supported by a network of trusted people who provide information, guidance, and advocacy. BCBAs who understand SDM can serve as educators for families exploring alternatives to full guardianship, and can design intervention programs that explicitly build the decision-making skills clients need to participate in their own supported decision-making network.

Hoogstad et al. (2026) found that trauma can be reliably assessed in adults with severe intellectual disabilities—a finding with direct implications for guardianship practice. Clients who experienced abuse within a guardianship context may present with PTSD that affects their behavioral presentation in ways that are misattributed to developmental disability rather than trauma, compounding the original injustice.

Ethical Considerations

The BACB Ethics Code (2022) addresses the power dynamics of guardianship throughout. Section 1.07 (Dignity) requires that BCBAs treat all clients with dignity regardless of their legal status—guardianship does not reduce the BCBA's ethical obligation to the person receiving services. Section 2.03 (Informed Consent) specifies that when a client cannot provide informed consent, BCBAs must work with the legally authorized representative and still attempt to obtain client assent.

Section 2.07 (Conflicts of Interest) is relevant when guardian instructions conflict with the client's expressed preferences or wellbeing. If a guardian directs the BCBA to implement a behavior reduction goal that the client consistently resists without clinical justification, the BCBA must evaluate whether the goal serves the client's interests and whether compliance with the guardian's direction compromises the Ethics Code's dignity and welfare requirements.

Mandatory reporting obligations apply when a BCBA reasonably suspects that a guardian is abusing, neglecting, or exploiting the client under their care. Guardianship does not confer immunity from abuse reporting requirements, and BCBAs must be familiar with their state's reporting statutes for adults with disabilities, which differ from child abuse reporting frameworks.

Alnahdi & Morin (2026) found that attitudes toward intellectual disability are measurable and vary across cultural contexts. BCBAs working in cross-cultural guardianship contexts must be aware of how cultural attitudes toward disability may shape guardian decision-making and communicate clearly about the client's rights under both professional ethics standards and applicable law.

Assessment & Decision-Making

Assessment in guardianship contexts requires attending to two parallel tracks: the client's behavioral presentation and the quality of the guardianship arrangement itself. The latter is not a formal clinical assessment—it is an observational and documentary process that informs the BCBA's understanding of the decision-making context.

Decision-making about treatment goals when a guardian's instructions conflict with client preferences requires documentation of the conflict, consultation with a supervisor, and in serious cases, consultation with legal counsel or advocacy organizations. Kerry et al. (2026) found that the OWLS-ID provides reliable wellbeing and distress measurement for adults with intellectual disabilities, making it possible to document client wellbeing objectively—data that becomes relevant if a guardianship arrangement is later reviewed by a court or oversight body.

Hoogstad et al. (2026) found that PTSD can be assessed with validated instruments in adults with severe intellectual disabilities. For BCBAs working with clients who have a history of institutional placement or family-based guardianship, a trauma screening should be part of the standard intake process—both to inform intervention design and to document any trauma-related presentations that may be relevant to the ongoing appropriateness of the guardianship arrangement.

For clients who are approaching adulthood, the transition from parental authority to guardianship or supported decision-making is a clinical decision point that BCBAs can influence by building the decision-making repertoires that SDM requires: preference expression, informed choice, and communication of personal values. Starting this work proactively in the pre-transition period is far more effective than attempting it after a plenary guardianship is already established.

What This Means for Your Practice

The practical implication of this course is that BCBAs need to know the guardianship status of their clients—not as a documentation checkbox, but as a clinically relevant variable that affects how the client's interests are represented, how treatment decisions are made, and what ethical obligations apply. If you do not currently collect guardianship status at intake, add it.

For clients under guardianship, build a routine practice of directly asking the client—using their communication modality—about their preferences for treatment goals and activities. Document those preferences separately from guardian instructions. This creates a record that can identify divergence and, when divergence is significant, prompts the ethical escalation process.

For families of younger clients who are approaching the age of majority, provide information about supported decision-making as an alternative to plenary guardianship before the guardianship petition is filed. Kaur et al. (2026) found that functional assessment produces better outcomes when social and communicative functions are identified early—the same principle applies here: identifying the client's capacity for supported decision-making before the legal transition preserves options that are much harder to restore after plenary guardianship is granted.