Positive Behaviour Support in Ontario: A Plain-Language Guide for Families

If you’re supporting an adult with a developmental disability in Ontario, you’ve probably been told they have “behaviours” — and perhaps been asked to help “manage” them. This guide offers a gentler and more accurate starting point: behaviour is almost always communication, and the most effective, most humane response is to understand what a person is telling us and change the world around them, not to control the person. It walks through Positive Behaviour Support, the honest debates behind it, the Ontario rules on restraint, and what good day-to-day support actually looks like — in plain language, with every source kept and dated.

The short version

• Behaviour is communication, not “bad behaviour.” Self-injury, aggression, property damage and withdrawal are best understood as signals of an unmet need, pain, distress, or an environment that does not fit the person — a way of being heard when other ways are unavailable. This reframe, grounded in the foundational work of Carr and Durand (1985) on functional communication, must come before any technique.
• Positive Behaviour Support (PBS) is a values-based, evidence-informed framework that seeks to understand the function of a behaviour, change antecedents and environments, teach alternative skills, and — above all — improve the person’s overall quality of life, rather than suppress behaviour.
• PBS grew out of applied behaviour analysis (ABA), and that lineage is genuinely contested. Many autistic self-advocates (e.g., ASAN) criticize ABA-derived approaches as compliance-focused and traumatizing; others value structured support. Modern PBS explicitly centres autonomy and quality of life over compliance, but the debate is real and unresolved.
• Restraint and seclusion carry serious risks — including injury, trauma, and death — and the clear direction of the field is to minimize and eliminate them. In Ontario, O. Reg. 299/10 (Quality Assurance Measures) under SIPDDA sets strict limits: intrusive intervention only when a person is at immediate risk of harm, physical restraint as the only permitted intrusive measure in a crisis, least force, monitoring, documentation, and clinician-approved behaviour support plans.
• Most “behaviour” is manufactured by the setting — understaffing, boredom, unpredictability, sensory overload, communication barriers, undiagnosed pain and trauma. Good support is proactive, relationship-based, individualized and dignity-preserving; the fix is usually the environment, not the person.

What every family should know

1. Start from “what is this person telling us?” not “how do we stop this?” The most cited idea in this field is that challenging behaviour is often functionally equivalent to communication (Carr & Durand, 1985, Journal of Applied Behavior Analysis). If you strengthen a reliable way for the person to get the same need met, the challenging behaviour usually weakens.
2. The function matters more than the form. Two people who both hit may be doing so for opposite reasons (one to gain attention/contact, one to escape a demand). A functional behaviour assessment (FBA) is how you find out; the same “behaviour” can need opposite responses.
3. PBS is judged by quality of life, not just behaviour reduction. The Association for Positive Behavior Support (APBS) defines PBS as strategies to “increase quality of life and decrease problem behavior by teaching new skills and making changes in a person’s environment.”
4. The ABA debate is legitimate and you should be honest about it. Represent both the self-advocacy critique (compliance, masking, trauma) and the clinical defence (structure, skill-building, evidence) fairly.
5. Restraint is a last resort with a legal framework in Ontario, not a routine tool. Know O. Reg. 299/10, the MCCSS Policy Directives, and your agency’s behaviour support plans. Prevention and de-escalation come first.
6. Prevention beats reaction. Recognizing early escalation, using non-coercive/low-arousal de-escalation, and building predictable, relationship-rich environments prevents most crises.

Behaviour is communication, not misbehaviour

“Behaviours that challenge” — a term deliberately chosen over “challenging behaviour” or “problem behaviour” to locate the challenge in the situation rather than the person — include aggression, self-injury, property damage, and withdrawal. The UK’s NICE guideline NG11 (Challenging behaviour and learning disabilities, published 29 May 2015) states plainly that “behaviour that challenges” is not a diagnosis; it “may serve a purpose for the person” such as producing sensory stimulation, attracting attention, avoiding demands, or communicating with others, and “often results from the interaction between personal and environmental factors.”

The foundational research is Carr and Durand’s 1985 study “Reducing Behavior Problems through Functional Communication Training” (Journal of Applied Behavior Analysis, 18, 111–126). They demonstrated that behaviour problems “may be viewed as nonverbal communication” and that verbal communicative acts and behaviour problems can be functionally equivalent — so teaching a communicative replacement that achieves the same function weakens the behaviour. This launched Functional Communication Training (FCT), which Durand and colleagues have since described as “thirty years of treating challenging behavior” with a substantial evidence base.

A practical, clinician-facing Canadian expression of the same idea is the “HELP” framework (Canadian consensus guidelines for primary care of adults with IDD): behaviours that challenge are “frequently a way in which patients with IDD communicate their unmet needs,” and clinicians should systematically review Health problems (including pain and medications), Environments and supports, Lived experiences, and Psychiatric conditions — with psychiatric diagnosis usually pursued only after the other areas are addressed. Cohen-Mansfield’s “unmet needs” framework makes the same point: the person is trying to communicate a need or a distressed emotional state.

Why lead with this? Because the response to “bad behaviour” is control; the response to “communication of unmet need” is curiosity, assessment, and change to the environment. The entire ethical difference between coercive and supportive practice flows from which lens you start with.

What Positive Behaviour Support is, and where it came from

PBS is a multicomponent framework for supporting people with intellectual and developmental disabilities who engage in behaviour described as challenging. Per the APBS, it combines behavioural and biomedical science to “increase quality of life and decrease problem behavior by teaching new skills and making changes in a person’s environment,” and its effectiveness is judged by “increases in an individual’s success and personal satisfaction” and quality-of-life gains defined by the person’s own preferences — not by behaviour suppression alone.

History and evolution. PBS emerged as a distinct approach in the 1980s (Dunlap, Carr, Horner, Koegel and colleagues), out of dissatisfaction with aversive and suppression-focused methods and in step with the normalization/social-role-valorisation and deinstitutionalization movements. A landmark synthesis is Carr et al. (1999), Positive Behavior Support for people with developmental disabilities: A research synthesis (American Association on Mental Retardation). Over the following decades PBS was increasingly framed around quality of life (Schalock and colleagues’ QoL work) and, more recently, human rights: a 2023 special issue of the International Journal of Developmental Disabilities explicitly positions PBS within “a human rights based model of support,” consistent with the human-rights model of disability. In the UK, Gore et al. (2013) articulated a widely used PBS definition and the “capable environments” concept. PBS is thus best understood as ABA-derived technology wrapped in a values framework of person-centredness, inclusion, autonomy and quality of life.

The building blocks of Positive Behaviour Support

a) Functional (behaviour) assessment — “What does this behaviour achieve for the person?” Before intervening, you find out what the behaviour does for the person: the function or purpose. Common functions: to get something (attention/contact, a preferred item or activity, sensory input) or to avoid/escape something (a demand, pain, noise, a person). Methods include interviews with the person and those who know them, record review, direct observation (often ABC recording — Antecedent, Behaviour, Consequence), and rating scales; a formal functional analysis experimentally tests conditions. Day-program example: A man begins throwing materials every day around 11:00 a.m. ABC data shows it happens during a loud, crowded group activity and reliably results in being taken to a quieter room. Hypothesis: the behaviour functions to escape sensory overload. The “throwing” is the request “I need to get out of here.”

b) Antecedent and environmental strategies — “Change what comes before.” Because behaviour is triggered and maintained by context, the most powerful and least intrusive changes are usually to antecedents and the environment: offering choice, predictable routines and visual schedules, reducing noise/crowding, adjusting task difficulty, honouring sensory needs, building in breaks, and warning of transitions. Example: Offering the man above a scheduled quiet break before 11:00 a.m., plus a smaller group, may remove the trigger entirely — no behaviour to “manage.”

c) Teaching replacement/alternative skills — Functional Communication Training. You teach a socially acceptable behaviour that achieves the same function more efficiently than the challenging behaviour — the heart of FCT. Example: Teaching the man to hand over a “break” card, use a device, sign, or say “break” — and ensuring staff honour it immediately and reliably. If the replacement is harder or slower than throwing, it will fail; it must work at least as well. (The how of building communication systems — devices, signs, symbol boards, augmentative and alternative communication or AAC — is covered in Communication and AAC for Adults with Developmental Disabilities in Ontario; here FCT is named as a PBS building block only.)

d) Reinforcement — “Make the helpful behaviour worth it.” Reinforcement strengthens the replacement skill and other desirable behaviours by ensuring they reliably produce the outcome the person wants (e.g., the break is granted immediately and warmly when the card is used). Modern PBS emphasizes naturalistic, preference-based, dignity-preserving reinforcement chosen with the person — not arbitrary rewards or the withholding of basic goods.

How PBS relates to ABA — and why that’s debated

Shared roots. PBS is, technically, one applied branch of behaviour analysis: it uses ABA-based procedures (functional assessment, antecedent manipulation, teaching, reinforcement). Behaviour analysis has three branches — radical behaviourism, the experimental analysis of behaviour, and applied behaviour analysis — and PBS draws on the applied branch while adding an explicit values/quality-of-life/human-rights layer.

The self-advocacy critique (in its own terms). Many autistic self-advocates and scholars argue that ABA-derived approaches are fundamentally about compliance and normalization — making an autistic person “indistinguishable from peers” — at the expense of autonomy, authentic self-expression, and mental health. The Autistic Self Advocacy Network (ASAN), in For Whose Benefit? Evidence, Ethics, and Effectiveness of Autism Interventions (December 2021), states that the goal of an autistic child who can “pass as neurotypical” is not acceptable and that “‘new ABA’ is no more acceptable or ethical than old ABA, even if it is less brutal.” Critics point to ABA’s founder Ivar Lovaas’s early use of aversives (including slaps and electric shocks), to the suppression of harmless stimming (“quiet hands”), and to procedures that do not allow a child to withdraw consent. Autistic writers (e.g., Sparrow/Devon Price, Michelle Dawson, and the Therapist Neurodiversity Collective) frame this as an ethical objection rooted in the neurodiversity paradigm and the social model of disability, not merely a technical one.

The clinical/defence position (in its own terms). Proponents — including some parents, clinicians, and autistic people — argue that structured behavioural support builds genuinely valued skills (communication, independence, safety), that modern practice has moved toward assent-based, cooperation-focused, neurodiversity-affirming methods, and that ABA has the largest evidence base of established autism interventions. A growing “affirming neurodiversity within ABA” literature (e.g., Behavior Analysis in Practice, 2024) urges the field to de-emphasize compliance in favour of cooperation and to treat assent-monitoring as an ethical mandate.

The trauma evidence, honestly. The most-cited claim of harm is Kupferstein (2018, Advances in Autism 4(1):19–29), which surveyed 460 respondents (217 caregiver entries and 243 adult entries) and found that “Nearly half (46 percent) of the ABA-exposed respondents met the diagnostic threshold for PTSD, and extreme levels of severity were recorded in 47 percent of the affected subgroup.” This study is genuinely contested: Leaf et al. (2018) and others identified serious methodological limitations (a self-designed questionnaire, leading questions, caregiver proxy reports of private events, no data on the ABA actually received), and Morris et al. (2025) discuss it as a source of misinformation. Equally, defenders’ dismissals do not make the underlying concern disappear: ASAN and others note that rigorous long-term research on the psychological impact of restrictive and coercive practices — including PTSD incidence — is still lacking, and that the absence of good evidence is not evidence of safety. The honest position: the trauma question is under-researched, the single most-cited study is methodologically weak, and that cuts both ways.

The aversives flashpoint. In fall 2022, ABAI’s membership adopted (by a ~65% vote of Full members, effective November 2022) a position statement that “we strongly oppose the use of contingent electric skin shock (CESS) under any condition.” Notably, ABAI’s own 2023 task force (Report of the ABAI Task Force on Contingent Electric Skin Shock, Perspectives on Behavior Science, 46(2):321–327) had recommended that ABAI “uphold clients’ right to receive CESS when it is restricted to extreme cases and used under rigorous professional and legal oversight” — a recommendation that “was rejected by a vote of the full members of ABAI, who instead endorsed an alternative recommendation… that opposed the use of CESS under any condition.” This centres on the Judge Rotenberg Center, the only known facility still using electric shock — a practice the UN Special Rapporteur on Torture has condemned. Modern mainstream PBS/ABA in Ontario does not use aversives; O. Reg. 299/10 and the MCCSS directives prohibit punitive practices.

How modern PBS positions itself. By foregrounding quality of life, choice, the least intrusive/most effective option, fading of any intrusive measures, and involvement/consent of the person, PBS as legislated in Ontario is explicitly not a compliance model — though critics reasonably note that values on paper depend on implementation in practice.

Restraint and seclusion: the harms, and the rules in Ontario

The harms are severe and well-documented. In a systematic review of physical harm and death from coercive measures in psychiatry, Kersting, Hirsch and Steinert (2019, Frontiers in Psychiatry 10:400) found that “Death was the most frequently reported harm,” that “Injuries during physical restraint were reported in 0.8–4% of cases,” and that venous thromboembolism was the second most analyzed harm. On psychological harm, Chieze et al. (2019, Frontiers in Psychiatry 10:491, a systematic review of 35 articles) concluded that “Estimation of post-traumatic stress disorder incidence after intervention varies from 25% to 47% and, thus, is not negligible, especially for patients with past traumatic experiences.” Restraint can cause positional asphyxiation, musculoskeletal injury, and death; StatPearls and Mental Health America both note there is broad international consensus that these practices have no therapeutic value and should be reduced or eliminated. People with intellectual disability are further traumatized by restraint used to “manage” their behaviour (Frith Prescribing Guidelines). Restraint and seclusion are applied disproportionately to disabled people, people of colour, and boys/men.

The reduction/elimination movement. The UK Restraint Reduction Network, organizational models such as low-arousal approaches, and trauma-informed care all push toward prevention over control. Evidence shows restraint can be reduced dramatically by meeting needs and defusing situations early. Williams et al. (2018, “Evaluation of a Program Model for Minimizing Restraint and Seclusion,” Advances in Neurodevelopmental Disorders), reporting 2003–2016 data from the Grafton Integrated Health Network (750+ staff, 3,244 clients), documented “a 99% decrease in restraint frequency, a 97% decrease in staff injury from a restraint, a 64% decrease in client-induced staff injury, and an increase in client goal mastery 133%,” with seclusion falling from 253 instances in 2003 to zero in 2015–2016 — i.e., restraint and seclusion were nearly eliminated while staff injury fell.

The Ontario framework (verify these — current as of July 2026). Ontario-funded adult developmental services operate under the Services and Supports to Promote the Social Inclusion of Persons with Developmental Disabilities Act, 2008 (SIPDDA) and O. Reg. 299/10 (Quality Assurance Measures, “QAM”). The regulation was approved July 7, 2010; effective for service agencies January 1, 2011 (and July 1, 2011 for application entities). It is administered by the Ministry of Children, Community and Social Services (MCCSS) (formerly MCSS), supported by the Policy Directives for Service Agencies (2012, with the Behaviour Support Plan Reference Guide, 2015). Key requirements under Part III:

• Definition. “Challenging behaviour” is behaviour that is aggressive or injurious to self or others, or causes property damage, and that limits the person’s participation, daily life, or learning. “Intrusive behaviour intervention” includes physical restraint, mechanical restraint, and secure isolation/confinement time-out; brief, gentle physical redirection/prompting that is part of a teaching program is explicitly excluded.
• When permitted (s. 20). Intrusive behaviour intervention may be used “solely when the person… is at immediate risk of harming themselves or others or causing property damage.” It must use the least amount of force necessary, the person must be monitored on a regular basis, and every incident must be recorded and its use and effectiveness evaluated.
• Crisis rule (s. 21). In a crisis situation, physical restraint is the only intrusive intervention permitted, and only where positive behaviour interventions have been tried; least force; all crisis incidents documented.
• Behaviour support plans (s. 18). A behaviour support plan (BSP) must address the behaviour identified in the behavioural assessment, weigh risks and benefits, set out the least intrusive and most effective strategies possible, and — where it includes intrusive strategies — be approved by a qualified clinician (psychologist, psychological associate, physician, psychiatrist, or a certified behaviour analyst). Per the Policy Directive, the plan must be developed with the involvement of the person and/or those acting on their behalf, they must consent to it, and the clinician must include provision for fading or eliminating intrusive strategies.
• Training (s. 17). Agencies must train all direct-care staff on physical restraint using a ministry-reviewed training package, and must train staff on the specific BSP of each person they support before working with them.
• Notification, debriefing, tracking. Agencies must have policies to notify a “contact person,” conduct structured debriefing after any restraint or secure isolation/confinement time-out (including checking on others who witnessed it), and track intrusive procedures for review.

Recent updates (2024–2026). MCCSS ran a consultation on amendments to O. Reg. 299/10 to align it with the Psychology and Applied Behaviour Analysis Act, 2021 — under which anyone using the title “behaviour analyst” must be a member of the College of Psychologists and Behaviour Analysts of Ontario (CPBAO) — and to add nurse practitioners among clinicians who may approve BSPs containing intrusive strategies. The ministry characterized these as alignment changes that add “no new costs or requirements.” Approved restraint-training programs were last refreshed effective July 1, 2022; the current MCCSS-approved programs for adult developmental services are: Safe Management Group (Crisis Intervention Training System, 2-day); Crisis Prevention Institute (Non-Violent Crisis Intervention, 2-day); QBS Inc. (Safety-Care Behavioural Safety Training, 2-day); The Mandt System Inc. (Relational/Conceptual/Technical, 3-day); Canadian Training Institute (Crisis Intervention with the Hostile and Aggressive Individual, 3-day); and Hy’N’Hancement Consulting Inc. (Understanding and Managing Aggressive Behaviour — UMAB, 2–5 day). MCCSS notes it does not itself “approve or licence” or fund/deliver these programs; agencies must select from the reviewed list.

A note on scope: Serious Occurrence Reporting — for example, when a restraint results in injury, or a secure isolation/confinement time-out is used contrary to a BSP or the regulation — is covered in AIM’s Dignity of Risk and Safeguarding in Ontario: A Guide for Families and Staff guide and is referenced here only at a high level. Likewise, chemical restraint and the overuse of psychotropic medication are covered in Dual Diagnosis and Diagnostic Overshadowing in Ontario: A Family Guide to Mental Health and Developmental Disability.

Preventing and de-escalating crises

The escalation cycle. Crises are not random; they move through recognizable phases — commonly described as calm → trigger → escalation → crisis → de-escalation → recovery. CPI’s Crisis Development Model similarly maps behaviour levels (anxiety → defensive → risk behaviour → tension reduction) to staff responses (be supportive/empathic → be directive → safety intervention as last resort → re-establish therapeutic rapport). Recognizing anxiety and defensiveness early — and responding with empathy and space rather than demands — is where most crises are prevented.

Non-coercive de-escalation: the low-arousal approach. Developed by Andrew McDonnell (Studio 3) in the 1990s, the low-arousal approach is now internationally recognized. Its four components: decrease staff demands/requests to reduce points of conflict; avoid arousing triggers (direct eye contact, touch, an audience of onlookers); avoid aggressive non-verbal behaviour (postures, stances) by staff; and challenge staff beliefs about “managing” behaviour. It reframes the intervention as changing staff and environment, not the person, and is closely aligned with trauma-informed care.

Why prevention beats reaction. Good environments, predictability, and trusting relationships reduce the physiological arousal that drives crises, so fewer crises occur and less force is ever needed. NICE NG11 prioritizes psychological and environmental interventions and reserves medication for severe cases only in combination with behavioural/psychosocial support.

Frameworks used in the Ontario sector. MCCSS-reviewed crisis-prevention/physical-intervention curricula used by developmental-services agencies include CPI Non-Violent Crisis Intervention, UMAB (Understanding and Managing Aggressive Behaviour), and Safe Management Group — all emphasizing least-intrusive, least-restrictive prevention and de-escalation, with physical skills as a last resort. In Waterloo Region, for example, Extend-A-Family Waterloo Region uses Safe Management crisis-prevention training as mandatory for staff in QAM programs.

When the setting creates the behaviour

NICE NG11 is explicit that “some care environments increase the likelihood of behaviour that challenges,” specifically those with “limited social interaction and meaningful occupation, lack of choice and sensory input, excessive noise, those that are crowded, unresponsive or unpredictable, and those characterised by neglect and abuse.” In other words, behaviour is often an accurate response to a bad environment.

Key systemic and environmental drivers:

• Undiagnosed/under-treated pain and medical problems. In the first large-scale caregiver study of chronic pain in this population, Walsh, Morrison and McGuire (2011, Pain 152(9):1951–1957) surveyed 753 caregivers and found that “15.4% of this sample was experiencing chronic pain, for an average of 6.3 years”; other caregiver-report studies range higher. Pain, constipation, dental problems, epilepsy, and GI conditions frequently present as behaviour when the person cannot report them. Life-threatening conditions can be missed when a behavioural response to pain is attributed to the disability — a diagnostic-overshadowing risk. “Rule out pain” is a first move, not a last resort.
• Communication barriers. When a person has no effective, honoured way to say “no,” “stop,” “I’m in pain,” or “I need a break,” behaviour becomes the communication channel.
• Sensory overload, boredom and lack of meaningful activity, and lack of choice/control.
• Under-staffing and workforce instability. Ontario’s developmental-services sector faces chronic underfunding and staffing shortages; the Canadian Centre for Policy Alternatives reports MCCSS funding was set to effectively decline over 2024–25 to 2027–28 while needing to rise ~4.2% just to maintain service levels, and that low wages (social-assistance-sector wage growth of ~22% from 2018–2025 lagged most provinces) drive turnover and poverty among workers. High turnover destroys the relationship continuity and consistency that prevent behaviour.
• Trauma. People with intellectual disability experience elevated rates of adverse experiences and are additionally traumatized by restraint, coercion, painful procedures, and discontinuities of care (staff turnover, respite, hospital admissions). Trauma-informed care (SAMHSA principles: safety, trust, choice, collaboration, empowerment) is increasingly recommended, though it remains an emerging, under-evaluated framework in IDD services.

The implication: when behaviour spikes, the first questions are about the setting — Is the person in pain? Bored? Overwhelmed? Unheard? Short-staffed today? — not “what’s wrong with them?”

What good support looks like day to day

• Proactive and preventive: predictable routines, visual schedules, meaningful and preferred activities, planned breaks, sensory accommodations, and warning of transitions — so triggers are removed before behaviour occurs.
• Relationship-based: consistent, trusted staff who know the person well; continuity prioritized despite workforce pressures; warmth and non-judgement (NICE: “build and maintain a continuing, trusting and non-judgemental relationship”).
• Individualized and function-based: support built on that person’s FBA and BSP, with replacement communication taught and honoured immediately.
• Dignity-preserving and consent-based: the person involved in their own plan to the fullest extent possible; choice and control maximized; privacy respected; any restrictive measure treated as an exceptional, monitored, time-limited adjunct that is being actively faded — never a standalone control tool.
• Health-alert: staff routinely consider pain and medical causes and support access to medical/dental care.
• Data-informed and reviewed: behaviour described observably (“hitting own face with closed fist, 2–10 times per session,” not “self-injury”), tracked, and plans reviewed and updated as the person changes.

Where support drifts toward control

Under stress, understaffing, fatigue, and fear, the path of least resistance is control — restraint, seclusion, “consequences” — even when it runs against the person’s interest and the evidence. Several forces push this way: staff who believe restraint is the safest option despite evidence of harm; thin staffing that removes the time and people needed for prevention and de-escalation; inadequate training or training that over-emphasizes physical holds; and organizational cultures that treat behaviour as defiance to be suppressed rather than communication to be understood. Ontario’s regulation deliberately places authority for intrusive measures with clinician-approved, consented, least-intrusive, fading-oriented plans and with the requirement that restraint be a genuine last resort in immediate-risk situations — precisely because the systemic gravity pulls toward coercion. Genuine authority over a person’s support lives in the person themselves (and those who represent them), the collaborative plan, and the clinician — not in a staff member’s momentary judgement under pressure. The honest organizational task is to resist the drift: fund and staff prevention, protect relationship continuity, train in de-escalation, debrief every restraint, and treat every use of force as a system failure to learn from, not a tool to normalize.

Grey areas and points of confusion

• The ABA debate is unresolved and value-laden. Whether PBS’s ABA lineage makes it inherently compliance-oriented, or whether modern PBS has genuinely transcended that, is contested between autistic self-advocacy communities and much of the clinical field. This guide deliberately represents both.
• Trauma evidence is thin. The headline Kupferstein (2018) figure (46% PTSS) rests on a methodologically weak study; its critiques are valid, but so is the observation that rigorous long-term trauma research is missing. No one should claim the question is settled in either direction.
• PBS outcome data are mixed. Small-scale studies and reviews (e.g., LaVigna & Willis’s efficacy review of PBS with the most challenging behaviour) report good outcomes and cost-effectiveness, but the largest randomized controlled trial — Hassiotis et al. (2018, British Journal of Psychiatry 212(3):161–168), a cluster RCT of staff training in PBS across UK community teams — concluded verbatim: “Staff training in PBS, as applied in this study, did not reduce challenging behaviour. Further research should tackle implementation issues and endeavour to identify other interventions that can reduce challenging behaviour.” Defenders note poor implementation fidelity (few staff trained, variable plan quality) rather than a failure of PBS itself, and an earlier pilot and 2-year follow-up were more positive. The fair summary: PBS is promising and consistent with rights-based practice, but the evidence that training staff in it reliably reduces behaviour at scale is weak; quality-of-life outcomes are reported even less often than behaviour outcomes.
• Restraint-reduction tension. There is genuine tension between the goal of eliminating restraint and the reality that some situations involve immediate danger; the field’s answer is heavy investment in prevention so that last-resort situations become rare, but abolitionist and harm-reduction positions differ on whether elimination is fully achievable.
• Trauma-informed care in IDD is emerging, not established — widely endorsed but with limited demonstrated effectiveness and few disability-specific frameworks to date.

How current is this, and what to double-check

• This is general information, not clinical, legal, or diagnostic advice. Individual support decisions must be made with the person, their substitute decision-makers where applicable, and qualified clinicians, and in compliance with current law and your agency’s policies.
• Recency/staleness flags. Ontario’s O. Reg. 299/10 dates from 2010 (effective 2011); the Policy Directives (2012) and Behaviour Support Plan Reference Guide (2015) remain the operative guidance, with 2021–2026 amendments aligning to the Psychology and Applied Behaviour Analysis Act, 2021 and CPBAO regulation of behaviour analysts. Verify the current consolidated text on Ontario e-Laws and the current MCCSS approved-training list before relying on specifics, as amendments were in progress in the 2024–2026 window. NICE NG11 dates from 29 May 2015. Workforce/funding figures are 2024–2026 estimates and change with each provincial budget.
• Source reliability. Regulatory content here is drawn from primary/near-primary sources (Ontario e-Laws, CanLII, MCCSS/ontario.ca directives). Some clinical figures (e.g., pain prevalence, PTSD incidence after restraint) come from reviews with wide ranges and should be read as indicative, not precise. Self-advocacy positions are represented from ASAN’s own publications; clinical-defence positions from peer-reviewed behaviour-analytic sources.
• Scope boundaries. Dual diagnosis and psychotropic overuse (Dual Diagnosis and Diagnostic Overshadowing in Ontario: A Family Guide to Mental Health and Developmental Disability), safeguarding and Serious Occurrence Reporting detail (Dignity of Risk and Safeguarding in Ontario: A Guide for Families and Staff), and augmentative and alternative communication (AAC) methods (Communication and AAC for Adults with Developmental Disabilities in Ontario) are owned by other AIM documents and referenced here only at a high level.

Related: Dignity of Risk and Safeguarding in Ontario: A Guide for Families and Staff · Communication and AAC for Adults with Developmental Disabilities in Ontario · Dual Diagnosis and Diagnostic Overshadowing in Ontario: A Family Guide to Mental Health and Developmental Disability