Definition and clinical scope
Self-injurious behavior in intellectual disability refers to actions directed toward a person's own body that can cause physical injury, including repeated head hitting, self-biting, striking the body, or other forms of self-directed impact. The central clinical task is to protect the person from injury while determining what precipitates and maintains the behavior, identifying pain or illness, and constructing effective, acceptable supports. A useful assessment connects injury severity, communication, mental health, environmental demands, learning history, and the person's own priorities. The need for immediate medical care takes precedence when an episode causes serious injury or exposes the person to imminent danger. NICE NG11
Intellectual disability itself is defined through significant limitations in intellectual and adaptive functioning that begin during development. Intellectual functioning and everyday adaptive skills are distinct domains; neither an IQ score nor a diagnostic severity label determines the cause of an individual's self-injury. Some people with intellectual disability never engage in self-injury, while others experience episodic or persistent episodes associated with specific health and environmental circumstances. AAIDD defining criteria
Repetitive self-injury, self-harm, and suicidality
Clinical language matters because different presentations require different assessments. Repetitive self-injury in a developmental-disability context can consist of frequently recurring behaviors with no demonstrable wish to die, and NICE NG11 defines this pattern separately from deliberate self-harm. NICE NG225 addresses intentional self-poisoning or injury regardless of apparent purpose and expressly excludes repetitive stereotypical self-injurious behavior such as head banging. A person can nevertheless experience both patterns, including depression, suicidal thinking, and severe repetitive behavior; one clinical formulation cannot safely stand in for the other. NICE NG11 definitions; NICE NG225 scope.
The observable act alone cannot establish intent. Communication differences may make statements about pain, distress, hopelessness, or death difficult to elicit. A clinician should ask about suicidal thoughts and intent in accessible language whenever clinically indicated, examine context and medical consequences, and seek specialist mental-health assessment if self-harm or suicidality is suspected. Care teams should avoid assuming that disability prevents suicidal intent and should avoid interpreting all repetitive self-injury as a suicide attempt. NICE NG225 assessment recommendations; NICE NG54.
Why self-injurious behavior occurs: a multiple-pathway model
Self-injury can arise through interacting biological, psychological, interpersonal, and contextual pathways. Some episodes begin with untreated discomfort or a new neurological condition. Others become more frequent because an action changes a situation in a predictable way—for example, a difficult task stops, an important person responds, or a preferred activity becomes available. Still others appear to persist in the absence of readily identified social consequences. A functional hypothesis describes this pattern of relationships; it is tested against repeated observations rather than inferred from a single episode. Iwata et al., 1994, functional analysis; NICE NG11.
Pain, illness, and changes in physical health
A recent increase in self-injury deserves an active search for medical causes, including dental pain, ear problems, headache, gastrointestinal discomfort, constipation, reflux, skin irritation, infections, injury, menstrual or other cyclical pain, sleep disruption, and medication adverse effects. These are clinical possibilities to evaluate according to the individual's history, examination, and presentation, not a universal checklist of causes. A person who cannot identify or verbally describe pain may show changes in facial expression, posture, appetite, movement, sleep, withdrawal, aggression, or self-injury instead. A credible behavioral formulation therefore includes a physical-health review rather than treating the episode as a purely behavioral problem. NICE NG11 physical healthcare and assessment; NICE NG54 health checks.
Epilepsy, movement disorders, sensory impairment, and motor difficulties can complicate the clinical picture, especially when behavior changes abruptly or appears alongside altered awareness or unusual movements. Medical specialists should determine whether neurological evaluation or other testing is warranted. The timing of self-injury relative to illness, sleep loss, medication changes, mobility problems, and feeding or elimination can help locate useful leads without converting temporal association into proof of causation.
Socially mediated patterns
Functional behavioral research has shown that self-injury may be influenced by attention, interruption of an aversive or inaccessible demand, or access to activities and materials. In a landmark series of experimental assessments, behavior varied across individuals and assessment conditions, establishing the importance of identifying each person's specific maintaining variables. The frequently used labels attention, escape, and tangible access describe possible consequences of behavior; they are not judgments about manipulation, motive, or moral responsibility. Iwata et al., 1994, functions of self-injury.
A socially mediated account can also reveal failures of accessible communication. When requests for a break, assistance, contact, pain relief, or meaningful choice are rarely understood, a highly visible action may reliably produce a response. Restoring efficient and trustworthy communication can change this sequence. A team must listen to an individual's communication attempts even when the same person also displays dangerous behavior; withholding attention to legitimate needs is inconsistent with person-centered care.
Automatically maintained patterns and sensory context
Some self-injury continues without an easily identified social consequence. Researchers sometimes describe such behavior as automatically reinforced, but this label does not specify a single sensory or neurobiological mechanism. Sensory input, discomfort modulation, arousal, and other processes may need investigation, and it remains possible that important environmental or medical variables have been overlooked. The plan should be individualized, including preferred activities, sensory accommodations, health treatment, and specialist assessment, rather than assuming that any one sensory technique is an established treatment for self-injury. Melanson et al., 2023; NICE NG11 sensory interventions.
Developmental, mental-health, and contextual contributors
Communication access, adaptive skills, trauma exposure, anxiety, depression, changes in caregivers, unpredictable transitions, overcrowded environments, insufficient engagement, and a mismatch between support and demands can influence risk. A sudden increase after a move or a staffing change should prompt exploration of what the person has lost or gained: familiar relationships, control over routines, opportunities to decline activities, or dependable ways to request help. These are hypotheses for individual assessment, not interchangeable explanations for every person with intellectual disability. NICE NG11 early identification and assessment.
Recognizing acute danger and deciding when urgent care is required
Risk assessment begins with the person's current medical condition and the foreseeable consequences of another episode. Serious bleeding, suspected fractures, head injury with altered consciousness, breathing difficulty, suspected ingestion of harmful substances, rapidly worsening injury, or an inability to maintain immediate safety warrants urgent emergency evaluation according to local services. Even an injury that looks minor may require prompt medical review when repeated blows involve the head or eyes, when swelling or infection develops, or when the individual cannot report symptoms reliably. A clinician should also consider whether a new behavior represents an acute illness or an adverse medication reaction.
When a person is at immediate risk, caregivers should use an agreed, individualized safety response, summon appropriate clinical or emergency assistance, and reduce obvious hazards without escalating confrontation. Any physical intervention must follow applicable law and a competent, pre-established risk-management protocol. Improvised restraint can cause injury and distress; NICE recommends the least restrictive alternatives and restricts reactive measures to circumstances in which they are necessary, proportionate, documented, and reviewed. NICE NG11 reactive strategies.
What a complete risk formulation covers
A meaningful risk formulation records the form of self-injury, affected body areas, severity of actual and foreseeable injury, occurrence patterns, access to treatment, ability to communicate distress, and whether a person can move away from danger or request assistance. It also addresses possible suicidal thinking, self-neglect, rapidly escalating behavior, harm to others, abuse or exploitation, family or residential support breakdown, and risks created by restrictive practices. These domains are explicitly included in NICE NG11's risk-assessment recommendations, which call for repeated review as circumstances change. NICE NG11 risk assessment.
Frequency alone is an inadequate indicator of danger: a single severe blow may carry greater medical risk than numerous low-force actions, while increasing frequency can signal illness or worsening distress. A person's protective factors—trusted relationships, communication resources, meaningful routines, accessible medical services, and successful coping strategies—also belong in the assessment. For people presenting with intentional self-harm, NICE NG225 recommends a needs-centered psychosocial formulation and advises against using numerical risk scales or global low/medium/high classifications to predict suicide or decide access to care. NICE NG225 risk tools.
Assessment: from description to an individualized explanation
Step one: describe and measure the behavior
A useful description is observable and specific: the body movement involved, its usual setting, duration, frequency, intensity, and resulting injury. Distinguish separate forms of self-injury instead of collapsing them into one total. Record when episodes occur, what happened immediately before, who was present, which activities and physical conditions were involved, and what occurred afterward. Include records of treatment needs and any emergency visits. Baseline data permit later evaluation, while descriptions of pain, distress, and lived experience keep measurement clinically meaningful. NICE NG11 functional assessment.
Information should be gathered from the person in their preferred communication mode and, with appropriate consent and confidentiality safeguards, from relatives, supporters, teachers, residential staff, and clinicians who know the individual's history. Accounts may differ across settings, and those differences often reveal context rather than simple disagreement. Recording positive moments—times when the behavior does not occur—can help identify protective conditions.
Step two: review physical and mental health
Assessment of new or intensifying self-injury ordinarily includes a medical history, examination as indicated, review of prescribed and nonprescribed substances, sleep, appetite, sensory and motor difficulties, and assessment of possible pain. The clinician should examine whether changes in mood, motivation, daily skills, enjoyment, social participation, and behavior suggest depression, anxiety, trauma-related distress, psychosis, or other co-occurring conditions. Diagnosis requires a qualified clinician to evaluate the broader clinical syndrome; self-injury is a sign that may warrant investigation, not a psychiatric diagnosis by itself. NICE NG54.
Diagnostic overshadowing occurs when clinicians attribute a symptom to intellectual disability and consequently miss another explanation. The safest clinical response is to treat change from the individual's personal baseline as information, seek accessible accounts of subjective experience, and assess medical and mental-health explanations directly. Pain management, sensory examination, and psychiatric evaluation should be coordinated rather than placed in competition.
Step three: perform a functional behavior assessment
Functional behavior assessment integrates interviews, routines, records, direct observation, and explicit hypotheses about antecedents and consequences. It asks under what conditions the behavior becomes more or less likely, what response it may produce, and which skills or accommodations might make it unnecessary. A descriptive antecedent-behavior-consequence record is a starting instrument, not a complete proof of behavioral function. Specialist teams may use structured or experimental functional analyses when their results would materially improve an intervention and when safety can be maintained. Melanson et al., 2023; NICE NG11.
Experimental assessment is an important scientific method, but deliberate exposure to potentially injurious conditions raises ethical and medical questions. A 2024 scoping review found that protective procedures were reported more frequently in newer functional-analysis studies while revealing continued variation in protection and reporting. A clinician should choose the least hazardous valid assessment approach, arrange safeguards, and avoid any unsupervised attempt to provoke self-injury to test a hypothesis. Frank-Crawford et al., 2024; Rahaman et al., 2024.
Step four: formulate a shared, revisable explanation
The final formulation connects medical findings, developmental abilities, communication, stressors, environmental demands, reinforcing consequences, injury risk, the person's expressed wishes, and protective resources. It identifies competing possibilities and states what new observations would change the plan. For example, increased head hitting during meals may call for medical examination of dental or swallowing discomfort before any educational or behavioral intervention is adjusted. A person whose episodes accompany abrupt, confusing transitions may benefit from predictable scheduling, accessible warning, and the ability to request more time.
A well-constructed formulation remains provisional because the same outward movement may have several functions at different times. Reassessment is essential when a new illness occurs, caregivers change, medication is introduced, or an intervention is ineffective. The person and their supporters should be able to understand the explanation in an accessible form and to challenge it when it fails to match lived experience.
Evidence-informed prevention and support
Treat identified health problems and restore accessible care
Effective support begins by addressing documented or suspected contributors. Pain, a sleep disorder, a mental-health condition, or medication side effects require their own appropriate evaluation and treatment. Adjustments to the setting should allow privacy, sensory comfort, predictable transitions, meaningful activity, and reasonable opportunities for rest. A person-centered plan also considers whether the individual feels safe with particular supporters and has practical means to report abuse or distress. NICE recommends coordinating physical healthcare and tailored behavioral strategies rather than treating them as separate service silos. NICE NG11.
Teach communication that is easier and more effective
Functional communication training teaches a safer, accessible response that achieves an identified function of the behavior, such as obtaining a break, requesting assistance, communicating discomfort, or choosing another activity. The replacement action may be speech, a gesture, an object, a symbol, a communication board, or a speech-generating device. Supporters must respond consistently and promptly to the new request; otherwise the alternative may offer little practical advantage. Speech-language professionals can assess receptive language, motor access, vocabulary, and partner training so the chosen method remains usable in real routines. ASHA intellectual disability portal; ASHA AAC portal.
A systematic review and meta-analysis published in October 2026 examined educator-implemented functional communication training across 15 single-case experimental studies involving 40 individuals with developmental disabilities. The investigators found large average improvements in communication and reductions in challenging behavior within these study designs. These results strengthen support for the approach in suitable school-based circumstances, while the small combined sample, heterogeneous presentations, and limitations of blinding prevent a universal prediction of benefit for all self-injury in every setting. Cure and Gulboy, 2026.
Design safer environments and meaningful routines
Prevention may include modifying inaccessible tasks, breaking complex activities into manageable parts, improving predictability, providing choice about timing and participation, reducing distressing noise, ensuring interpersonal respect, and creating regular opportunities for enjoyable activities. A task-related episode should lead to an examination of the task's accessibility and meaning. A social-contact-related episode should prompt attention to relationship needs and opportunities for dependable interaction. Environmental adaptation respects the person's autonomy and reduces the circumstances in which distress becomes acute.
Positive behavior support and individualized plans
Positive behavior support combines a person-centered formulation, prevention, skill teaching, reinforcement of useful alternatives, staff and family coaching, and systematic review of outcomes. Its aims extend beyond fewer episodes to improved communication, participation, agency, and quality of life. A written plan should specify who does what during calm periods, early warning signs, injury-risk escalation, post-incident medical review, and follow-up. It must also name the support resources needed to implement it consistently across home, school, work, and residential settings. NICE NG11 behavior support plans.
Evidence for positive behavior support varies substantially by intervention, population, outcome, and implementation. A nonrandomized multicenter controlled study of residential staff support found improvement in some behavioral and quality-of-life domains while not showing a statistically greater reduction in overall irritability in the full intervention group. Its subgroup patterns should be interpreted cautiously. Evidence that a package works in one organization cannot replace individual monitoring of injury severity and personal outcomes. Bruinsma et al., 2024.
A 2025 systematic review and meta-analysis of randomized trials among children with intellectual disability reported a small average benefit from nonpharmacological interventions across broad challenging-behavior outcomes and no pooled benefit for the mixed pharmacological interventions studied. These pooled outcomes are not an estimate of the effect of any one intervention on self-injury specifically, and treatment selection still requires diagnosis, individual history, and careful review. Lye et al., 2025.
Build staff competence and family partnership
Plans succeed only when the people implementing them understand the individual's communication, receive competent training, and have realistic time and resources. Staff should share observations without blame, use the same agreed communication supports, document intervention integrity, and seek supervision when outcomes worsen. Families and supporters can identify longstanding preferences and early signs of discomfort, but they should not be expected to provide specialist crisis care without adequate training, respite, and professional support. NICE NG11 workforce and family support.
The role and limits of medication
Medication may be indicated for a diagnosed co-occurring condition or when other clinical indications justify treatment. Self-injury by itself does not specify a pharmacological target or establish that an antipsychotic, antidepressant, sedative, or opioid antagonist will help. An updated Cochrane review of drug treatment specifically for self-injurious behavior in adults with intellectual disability found only five placebo-controlled studies involving 50 participants, evaluating naltrexone or clomipramine; the evidence was too sparse and methodologically limited to support firm conclusions on efficacy or safety. Rana, Gormez, and Varghese, 2022.
NICE NG11 advises considering antipsychotic medication for behavior that challenges only under defined circumstances: insufficient response to appropriate nonpharmacological approaches, persistent problems despite treating co-occurring illness, or very severe risk. When prescribed, it should accompany psychological or other supports, have a clearly defined target behavior and outcome measure, and be initiated and monitored by a specialist. NICE also specifies early review of benefits and adverse effects, using the minimum effective dose, and stopping when an adequate initial trial shows no indication of response. These recommendations require individualized medical judgment and should never be read as authorization for unsupervised medication changes. NICE NG11 medication.
A medication review should examine sedation, weight and metabolic changes, movement effects, interactions, altered awareness, and whether the drug has reduced opportunities to communicate or participate. Outcome monitoring should include injury, distress, sleep, daily function, and quality of life rather than relying solely on a global behavior score. When symptoms recur after a dose change, clinicians should reassess the medical and behavioral formulation instead of automatically escalating medication.
Safety plans, crisis responses, and restrictive interventions
An individualized safety plan clarifies early changes that predict escalation, the person's preferred de-escalation supports, roles of trusted adults or staff, how to access medical care, and the threshold for seeking emergency assistance. It can also describe how to document injuries respectfully, review possible pain, communicate information between settings, and protect privacy. Planning should be collaborative and accessible; the person should know what supporters will do and how to ask for changes.
Restrictive responses, including seclusion, manual holds, mechanical restraint, and rapid tranquilization, may pose physical and psychological risks. Professional services must follow applicable safeguarding requirements and use the least restrictive lawful responses to immediate danger. They should review any restrictive incident, document its necessity and effects, and make prevention and alternatives central to the subsequent plan. Physical restraint or protective equipment is not a routine self-help intervention and requires professional oversight, an individualized assessment, and regular review. NICE NG11 reactive strategies.
When abuse, neglect, intimidation, or unsafe services are suspected, safeguarding assessment should proceed alongside medical and behavioral care. Self-injury in an unsafe environment cannot be resolved solely by teaching the individual to tolerate the environment. Trustworthy complaints procedures, accessible advocacy, attention to relationships, and responsible service oversight are necessary parts of protection.
What outcomes should a care team measure?
Outcome measurement should combine observed change with the life the person is able to live. Clinical teams can monitor frequency, duration, injury severity, emergency visits, untreated pain, adverse drug effects, and the level of distress surrounding episodes. Equally important are independence in meaningful daily activities, successful communication, choice, participation, sleep, relationships, satisfaction, and reductions in restrictive intervention. A behavior plan that lowers a count while leaving a person sedated, isolated, or medically unwell has not met the larger objective of person-centered care.
Measurements must fit the situation. Direct observations can be useful when episodes are frequent and brief; incident records and medical outcomes may be more suitable for rare but severe events. Staff-rated scales can supplement clinical information, but need contextual interpretation and should not substitute for the person's own perspective. Reviews should be scheduled, triggered by meaningful deterioration, and used to revise the intervention.
Special considerations across development and settings
Children and adolescents
For children and adolescents, a developmental assessment considers emerging communication, changes in learning demands, family routines, physical maturation, sleep, sensory and medical conditions, and access to inclusive education. Teaching communication and modifying inaccessible situations are often integral to prevention. Parents, teachers, speech-language professionals, pediatric clinicians, and behavior specialists may need to collaborate, with attention to preserving play, peer contact, and education rather than allowing risk management to consume the child's daily life.
Adults and transitions
Self-injury may change when people leave school, enter supported employment, move between homes, experience changes in caregiving, or lose longstanding relationships. Adults should be involved in choices about daily routines, privacy, relationships, and medical decisions with the communication and decision-making support they need. A transition plan should transfer the individual's communication system, health information, risk formulation, and successful support approaches without treating past behavior as an unchangeable trait.
Autism and other co-occurring conditions
Some people have both intellectual disability and autism, but the conditions describe different aspects of development. An autism diagnosis does not establish the function of self-injury, and a support plan must assess the person's sensory profile, communication, health, preferences, and developmental history. The separately published Autism and Intellectual Disability in Adults: Differences and Support addresses the adult diagnostic and support relationship; the present article addresses self-injury risk and care among people with intellectual disability.
Clinical reasoning: illustrative situations
Consider a person whose self-hitting begins abruptly, coincides with disrupted sleep, and intensifies during meals. A medical examination and history of pain become immediate priorities; automatically assuming an attention-seeking function could postpone necessary treatment. If the behavior decreases after a health problem is treated, the clinical account gains support, although careful follow-up remains appropriate.
Consider another person whose repetitive self-biting clusters around tasks they cannot understand and who has no dependable way to request a break. The team can assess task accessibility, teach an effective break request through the person's preferred communication mode, and monitor whether the new support reduces episodes and injury. These examples illustrate reasoning pathways rather than diagnostic rules or ready-made treatment protocols.
Evidence quality, uncertainties, and scientific limits
The evidence base combines professional guidelines, observational studies, experimental functional analyses, single-case interventions, and a smaller number of randomized and controlled trials. Experimental functional analysis provides strong within-person information when safely designed, but study populations and service settings vary. Single-case research can show clear individual effects and still leave uncertainty about how broadly those effects generalize. Pooled analyses of challenging behavior can include aggression, irritability, disruption, and self-injury, making direct extrapolation to one self-injury presentation scientifically unsound. Melanson et al., 2023; Lye et al., 2025.
Established principles include investigating medical contributors, using accessible communication, developing an individualized functional account, examining risk repeatedly, and favoring person-centered proactive support. Evidence for specific medications used solely to suppress self-injury remains limited. Evidence for staff-delivered multicomponent programs is mixed, and implementation fidelity matters. Questions about generalizability across ages, severe disability profiles, health systems, and long-term quality of life remain important research priorities. Cochrane review; Bruinsma et al., 2024.
Ethical research should record adverse events, access to effective communication, personal assent where meaningful, consent and supported decision-making, and participants' opportunities to improve their lives. The 2024 review of safety protections in experimental functional-analysis studies underscores why reporting safeguards is part of scientific rigor. Person-centered outcomes and the perspectives of individuals with intellectual disabilities should influence both research design and interpretation. Frank-Crawford et al., 2024.
Questions people commonly ask
Does self-injury mean that a person wants to die?
No conclusion about suicidal intent follows from the behavior alone. Repetitive self-injury may be associated with pain, communication, stress, learned consequences, or other processes. A person may also experience intentional self-harm or suicidal thinking, which requires an appropriate, accessible mental-health assessment. Any immediate danger or serious injury requires urgent attention. NICE NG11; NICE NG225.
Can a change in self-injury be a symptom of pain?
Yes. New or worsening behavior can accompany medical illness, dental problems, sleep disturbance, medication effects, or other sources of discomfort, particularly when reporting pain verbally is difficult. The correct response is clinical examination guided by the person's presentation and history rather than assuming a particular cause. NICE NG11.
Does functional assessment require deliberately provoking injury?
No. Assessment can begin with interviews, observation, health evaluation, and analysis of ordinary routines. Experimental procedures are a specialist option whose usefulness and safety must be weighed in each case. Serious risks require appropriate safeguards, and caregivers should not attempt to provoke episodes outside a professional protocol. Rahaman et al., 2024; Frank-Crawford et al., 2024.
Can communication supports reduce self-injury?
Communication supports can reduce some behavior when an inaccessible request or unmet communication function is an important contributor. Functional communication training and AAC are tailored to the individual and require dependable responses from communication partners. Their success is evaluated through injury outcomes as well as communication and quality of life. ASHA AAC; Cure and Gulboy, 2026.
When should family members ask for specialist help?
Prompt specialist review is appropriate when self-injury causes injury, increases in severity or frequency, begins unexpectedly, interrupts essential daily functioning, or persists despite initial medical and environmental support. A multidisciplinary team can assess health, communication, behavior, mental health, and safeguarding together. Serious injury, imminent danger, or suspected suicidal intent requires urgent medical or crisis assessment appropriate to the situation.
Conclusion
Self-injurious behavior in intellectual disability requires a clinically integrated and person-centered response. The most informative pathway begins with immediate protection and assessment of injury, investigates pain and co-occurring conditions, identifies the behavioral and communicative context, and builds an individualized plan to improve safety, choice, connection, and daily participation. Risk changes over time, and support must change with it. The strongest outcome is a life in which the person can communicate needs, access healthcare, exercise agency, and participate meaningfully with fewer injuries and less distress.
Related Articles
Autism and Intellectual Disability in Adults: Differences and Support — a related, separately owned account of co-occurring autism and intellectual disability in adulthood.
Positive Behavior Support for Intellectual Disability: Principles and Evidence — Design and evidence appraisal of positive behavior support.
Mental Health Problems in People With Intellectual Disability: Recognition and Care — Broad co-occurring mental health diagnostic and care pathway.
References
American Association on Intellectual and Developmental Disabilities. (n.d.). Defining criteria for intellectual disability. Official AAIDD source.
American Speech-Language-Hearing Association. (n.d.). Augmentative and alternative communication (AAC). ASHA Practice Portal.
American Speech-Language-Hearing Association. (n.d.). Intellectual disability. ASHA Practice Portal.
Bruinsma, E., van den Hoofdakker, B. J., Hoekstra, P. J., de Kuijper, G. M., and de Bildt, A. A. (2024). Effects of positive behaviour support delivered by direct staff on challenging behaviours and quality of life of adults with intellectual disabilities: A multicentre cluster-controlled trial. Journal of Applied Research in Intellectual Disabilities, 37(1), e13164. DOI.
Cure, G., and Gulboy, E. (2026). A systematic review and meta-analysis of educator-implemented functional communication training. Journal of Applied Behavior Analysis, 59(4), e70088. DOI.
Frank-Crawford, M. A., et al. (2024). Protective procedures in functional analysis of self-injurious behavior: An updated scoping review. Journal of Applied Behavior Analysis, 57(4), 840–858. DOI.
Iwata, B. A., Dorsey, M. F., Slifer, K. J., Bauman, K. E., and Richman, G. S. (1994). Toward a functional analysis of self-injury. Journal of Applied Behavior Analysis, 27(2), 197–209. DOI.
Iwata, B. A., Pace, G. M., Dorsey, M. F., et al. (1994). The functions of self-injurious behavior: An experimental-epidemiological analysis. Journal of Applied Behavior Analysis, 27(2), 215–240. DOI.
Lye, V., et al. (2025). Behaviours that challenge in children with intellectual disability: Systematic review and meta-analysis of pharmacological and non-pharmacological interventions. BJPsych Open. PubMed.
Melanson, I. J., et al. (2023). Functional analysis of problem behavior: A 40-year review. Journal of Applied Behavior Analysis, 56(2), 262–281. DOI.
National Institute for Health and Care Excellence. (2015). Challenging behaviour and learning disabilities: Prevention and interventions for people with learning disabilities whose behaviour challenges (NG11). Official guideline.
National Institute for Health and Care Excellence. (2016). Mental health problems in people with learning disabilities: Prevention, assessment and management (NG54). Official guideline.
National Institute for Health and Care Excellence. (2022). Self-harm: Assessment, management and preventing recurrence (NG225). Official guideline.
Rahaman, J. A., Fahmie, T. A., Melanson, I. J., DeBrine, J. E., and Zangrillo, A. N. (2024). A concise review of the correspondence between the traditional functional analysis and alternative assessment formats. Journal of Applied Behavior Analysis, 57(2), 515–520. DOI.
Rana, F., Gormez, A., and Varghese, S. (2022). Pharmacological interventions for self-injurious behaviour in adults with intellectual disabilities. Cochrane Database of Systematic Reviews, 3, CD009084. DOI.