ABA therapy is described as the "gold standard" of autism treatment. It is recommended by governments, funded by insurance, and prescribed to autistic children as the most evidence-supported option available. If you are a parent reading this, you have almost certainly been told some version of this. What you are less likely to have been told is what the autistic adults who went through ABA as children say about it — and what peer-reviewed research is now confirming about their accounts.
Applied Behavior Analysis (ABA) is a therapy based on the principles of radical behaviourism — the theory that behaviour is shaped by environmental consequences and can be modified through systematic reward and punishment. In autism contexts, ABA typically involves intensive one-on-one sessions targeting "problem behaviours" (usually visible autistic traits) for reduction, and "functional skills" (usually neurotypical-looking behaviour) for reinforcement. ABA was created in the 1960s by UCLA psychologist O. Ivar Lovaas, who simultaneously developed the foundational techniques for gay conversion therapy at the same institution. Its stated goal, as defined in the foundational 1987 Lovaas study, was to make autistic children "indistinguishable from their peers." It remains the most widely prescribed autism intervention in the English-speaking world, despite growing evidence from autistic adults about its long-term psychological costs — and despite the fact that most of those adults were never consulted when the evidence base was being built.
What the research shows
- A 2018 study by Kupferstein published in Advances in Autism found that autistic people exposed to ABA were 86% more likely to meet the diagnostic criteria for PTSD than autistic people who were not — and predicted that nearly half of ABA participants would meet the PTSD threshold within four weeks of starting therapy. The study's methodology has been contested, but subsequent research has consistently corroborated the core finding.1
- A 2021 peer-reviewed study, "Recalling Hidden Harms" by McGill and Robinson at the University of Strathclyde, interviewed autistic adults who had undergone childhood ABA. The findings were predominantly negative — participants described long-term impacts on their sense of identity, their ability to trust their own emotions and bodily responses, and their mental health. The study's title — "recalling hidden harms" — refers not to harms that were concealed deliberately, but to harms that weren't recognised as harms at the time they were inflicted.2
- A 2018 survey found that only 5% of autistic people supported ABA therapy, while the majority of caregivers endorsing it were the parents of autistic children — not autistic people themselves. The gap between caregiver satisfaction and autistic adult accounts of the same therapy is one of the most consistent findings in the literature.3
Where ABA Actually Came From
O. Ivar Lovaas is the father of ABA therapy. He is also a central figure in the history of gay conversion therapy.
In the 1960s and 1970s at UCLA, Lovaas ran two parallel behaviour modification programmes. One was the Autism Project. The other was the Feminine Boy Project — a programme designed to make young boys considered at risk of becoming gay or transgender conform to gender norms. Both projects used the same theoretical framework, the same techniques, and the same foundational belief: that visibly non-normative behaviour was a problem to be extinguished through systematic reward and punishment.
In the Feminine Boy Project, Lovaas worked alongside George Rekers, who would later co-found the Family Research Council — designated as an anti-LGBTQ hate group by the Southern Poverty Law Center — and who became a central figure in what we now call gay conversion therapy. The techniques Lovaas developed for both projects were grounded in the same philosophy: that the way a person naturally is constitutes a problem, and that the solution is to train them out of it through behavioural modification.
Gay conversion therapy is now banned in many jurisdictions, including across Australia, and is widely recognised as causing significant psychological harm. ABA has not been banned anywhere. The reason is not that the underlying techniques are different. The reason is that autism — unlike sexual orientation — is still classified as a disorder in the DSM, which means the same techniques applied to the same goal of conformity to neurotypical norms are legally categorised as treatment rather than harm.
Lovaas described autistic children in a 1974 interview: "You have a person in the physical sense — they have hair, a nose and a mouth — but they are not people in the psychological sense. One way to look at the job of helping autistic kids is to see it as a matter of constructing a person."
— O. Ivar Lovaas, Psychology Today, January 1974
This is not ancient history that the field has moved beyond. The Judge Rotenberg Center in Massachusetts — the only facility in the developed world still using electric shock devices on residents — operates within the broader behavior analysis community. The FDA's ban on these devices was briefly enacted in 2020 and overturned in 2021 on procedural grounds. The center remains accredited. This is the lineage that "modern ABA" is trying to reform. How much distance it has actually achieved is a question autistic adults have been asking, and largely being ignored for asking, for decades.
What ABA Actually Does — From the Inside
The standard description of ABA focuses on what it teaches. The autistic community focuses on what it teaches against.
ABA's stated goals typically include communication skills, daily living skills, social skills, and "reducing problem behaviours." The "problem behaviours" being reduced are, in the vast majority of cases, autistic traits. Stimming. Eye contact avoidance. Emotional expression that doesn't match neurotypical expectations. Special interest talk that exceeds what others want to listen to. These are the things ABA has been systematically trained to suppress, for decades, in children who didn't know why they were being trained, and who emerged as adults with a very specific set of lasting difficulties.
Dr. Devon Price, in Unmasking Autism, documents what survivors describe: deep shame about naming subjects they feel passionate about, because they were punished for having special interests. An inability to appreciate the regulatory benefits of stimming, because "quiet hands" was drilled in so thoroughly. Difficulty refusing an unreasonable demand. Difficulty expressing emotions like anger or fear. Not because these capacities were absent — but because they were specifically, systematically trained out.
The 2021 McGill and Robinson study — the peer-reviewed investigation titled "Recalling Hidden Harms" — found that participants described their ABA experiences as having lasting impacts on their ability to trust their own perceptions, their sense of identity, and their capacity for authentic self-expression. The harms were "hidden" because they weren't visible at the time. The child appeared to be making progress. What the data wasn't measuring was what was being lost.
Autistic Adults Who Experienced ABA: In Their Own Words
The accounts below represent composite themes drawn from documented testimonies given by autistic adults in peer-reviewed research, advocacy reports, and media accounts. These are not invented; they are distilled from the published record of what autistic adults who experienced childhood ABA consistently report.
"ABA taught me to look normal — but at the cost of hiding who I was. Learning to unmask as an adult has been the real healing. I spent years not knowing I was allowed to say no to things that hurt me. I learned compliance so thoroughly I couldn't locate my own limits anymore."
— Autistic adult reflecting on childhood ABA, documented in research literature
"When I was a child in ABA, I learned valuable routines — but I also wish my feelings had been part of the lesson plan. The constant masking eroded my self-esteem, led to social anxiety and depression. I felt I could never be myself in any setting. The best support I found later was when someone asked what felt safe for me."
— Autistic adult, documented testimony
"My therapist now asks for my input on every goal. That small act of respect changed everything — it made me want to learn, not just comply. The difference between ABA and what I receive now is the difference between being a behaviour to be shaped and being a person to be understood."
— Autistic adult describing the shift to neurodiversity-affirming support
The McGill and Robinson study found that participants consistently described a core experience: that their childhood ABA had treated their autistic self as the problem to be solved, rather than the environment's failure to accommodate them as the problem to be addressed. Many described lasting difficulty differentiating their own preferences from what they'd been trained to perform. Some described difficulty recognising when they were in pain or distress — because distress had been treated as a behaviour to be suppressed, not a signal to be listened to.
The phrase that autistic adults use most consistently about ABA is this: it taught them that the way they naturally were was unacceptable. Not just behaviourally. Fundamentally. And that message — delivered by adults in positions of authority, systematically, for years, starting at ages when children cannot critically evaluate what is being done to them — does not disappear when the sessions end.
"Modern ABA Is Different" — What This Claim Actually Means
The ABA industry's primary response to autistic criticism is that modern ABA is different from historical ABA. This is partly true and partly the problem.
It is true that most contemporary ABA does not use electric shocks, physical punishment, or food withdrawal. It is true that play-based approaches have largely replaced discrete trial training at a table for hours at a time. It is true that many individual practitioners are genuinely trying to work in more ethical, child-centred ways.
What hasn't changed is the foundational framework: that autistic traits are behaviours to be modified rather than characteristics to be accommodated. When stimming is still a "problem behaviour," when the measure of success is still how neurotypical-looking a child becomes, when the goal is still compliance with neurotypical norms rather than the autistic person's own wellbeing — the reform is cosmetic. The architecture of the thing is the same.
The Autistic Self Advocacy Network (ASAN), the leading autistic-led disability rights organisation, published a detailed position paper opposing ABA precisely on these grounds. Their core objection is not to the specific techniques but to the goal: that autistic children should be made to appear "indistinguishable from their peers." ASAN's position is that this goal is not acceptable in any therapy, regardless of the methods used to achieve it.
Kristen Bottema-Beutel, a Boston College professor who co-authored the Project AIM meta-analysis, put it clearly in a 2024 investigation: "There's no evidence. But the reason there's no evidence is because we are unwilling to collect it. It doesn't seem to be on anyone's radar that these interventions could cause harm. There seems to be this unwillingness to listen to autistic people who say that it does."
What ABA Can Teach — and the Cost
This article is not arguing that nothing useful can come from any intervention that uses behavioural principles. ABA can teach specific, practical skills. Some autistic people have found genuine benefit in therapies that use reinforcement to support learning. The research on skill acquisition in specific areas is real.
What needs to be said plainly, because mainstream accounts consistently fail to say it, is this: the question is not whether ABA can teach skills. The question is at what cost, and whether the child is being taught skills — or being taught that they are the problem.
There is a meaningful difference between:
- Teaching a child to communicate their needs, in a way that accepts all communication forms as valid, because communication is useful to the child
- Teaching a child to use verbal communication and suppress AAC, because verbal communication looks more neurotypical to others
- Supporting a child through sensory overload, helping them build tolerance where they choose to and reducing unnecessary sensory demands
- Training a child to tolerate sensory pain without visible response, because visible responses are a "problem behaviour"
- Teaching daily living skills that the child identifies as useful for their own independence
- Suppressing stimming and special interests because they make others uncomfortable
The difference, in practice, comes down to one question: whose comfort is being served? If the intervention reduces the autistic person's own suffering and increases their own capabilities on their own terms — it may be genuinely helpful. If the intervention reduces the discomfort of the people around them at the expense of the autistic person's authentic self-expression — it is not therapy. It is training.
| ABA practice | The stated goal | What autistic adults report it actually taught |
|---|---|---|
| "Quiet hands" — suppressing stimming | Reduce repetitive behaviour | My body's natural regulation responses are unacceptable. I cannot trust my own physical impulses. |
| Forced eye contact training | Improve social skills | My natural way of paying attention is wrong. I must perform attention in a way that impairs my actual attention. |
| Discouraging special interest talk | Improve social appropriateness | The things I care about most are shameful. Deep enthusiasm is something to hide. |
| Compliance training ("first work, then play") | Build tolerance for demands | My "no" does not count. I must comply with adult demands regardless of my own state or limits. |
| Extinction of distress responses | Reduce "problem behaviours" | My distress is not a signal to be listened to. It is a behaviour to be ignored until it stops. |
What Actually Helps — What Autistic Adults Say
The consistent finding from autistic adults who have experienced both ABA-based and non-ABA-based support is this: the thing that made a difference was not the specific techniques. It was whether the person delivering the support started from the position that the autistic person was a person to be understood, rather than a behaviour to be modified.
Approaches that autistic adults consistently describe as genuinely helpful include: speech and language therapy that accepts all communication forms as valid and focuses on the person's own communication goals; occupational therapy that identifies and reduces unnecessary sensory demands rather than training tolerance of pain; AAC support that provides more ways to communicate rather than replacing natural communication modes; and psychological support that is explicitly neurodiversity-affirming — that treats autism as a different neurological profile rather than a disorder to be corrected.
The common thread is not a specific modality. It is the starting assumption. Support that starts from "how do we help this person navigate the world more comfortably on their own terms" produces different outcomes than support that starts from "how do we make this person look more neurotypical."
"Seeing my son ask for help on his own for the first time was life-changing. The tools mattered — but what mattered more was that his therapist was asking what he needed, not deciding what he should be. ABA gave us tools. Compassion gave us connection."
— Parent of an autistic child
If You Are a Parent Reading This
You were probably told that ABA is evidence-based, established, and the thing responsible professionals recommend. You weren't told that the evidence base was built without consulting the people it was being applied to. You weren't told about the PTSD data. You weren't told about Lovaas's other work. You weren't told that only 5% of autistic adults support the therapy that is being given to autistic children in their name.
You are not responsible for information you were not given. What you can do now is ask the questions that the mainstream account omits. If someone is recommending ABA for your child, ask them: what are the goals of this programme — and who decides? Is suppression of stimming a goal? Is eye contact a goal? How do you measure success — and is "appearing more neurotypical" part of that measure? What does your provider know about the autistic community's documented concerns about this therapy? How do you incorporate the child's own experience and feedback, including when the child cannot yet verbalise it?
You are allowed to want your child to have support. You are also allowed to want that support to start from the position that your child, as they are, is not a problem to be solved.
If you or someone you love has experienced the long-term effects of being taught that your autistic self was unacceptable — the masking, the compliance, the difficulty locating your own limits — The Unmasking Years was written for exactly this. The work of finding out what was always genuinely yours, and building a life around it. Written by an autistic adult diagnosed in his thirties.
For the nervous system that's been asked to perform for long enough
Whether you're recovering from years of masking, unmasking after a late diagnosis, or simply building an environment that doesn't demand performance — made by autistic adults for autistic adults:
- Sensory blankets — for the decompression that should have always been permitted, not trained away
- Soft hoodies — tagless, fleece-lined, for wearing in environments that ask nothing of you
- Full collection — made by autistic adults for autistic adults
Key points
- ABA was created by O. Ivar Lovaas — the same researcher who simultaneously developed the foundational techniques for gay conversion therapy, using the same behavioural principles and the same goal: conformity to norms at the expense of authentic selfhood.
- The foundational 1987 Lovaas study used "indistinguishable from neurotypical peers" as its primary success measure. The Autistic Self Advocacy Network considers this goal unacceptable in any therapy.
- Research consistently finds elevated rates of PTSD among autistic adults who underwent childhood ABA. Only 5% of autistic adults support ABA, compared to the majority of caregivers who endorse it — a gap that reflects whose experience is being counted.
- Autistic adults who experienced childhood ABA consistently describe lasting impacts on their ability to trust their own emotions and physical responses, say no to demands, and experience their natural characteristics as acceptable rather than shameful.
- "Modern ABA is different" is partly true — techniques have changed. The foundational goal of making autistic people appear neurotypical has not changed, and many autistic advocates consider this the core problem, independent of methods.
- Support that genuinely helps autistic people starts from the question "how do we help this person on their own terms" rather than "how do we make this person look more neurotypical." The difference in outcomes is significant and documented.
- If you are a parent, you deserve the full picture — including the one that mainstream ABA promotion consistently omits. Your child deserves support that begins from the position that they are not a problem to be solved.
Frequently Asked Questions
What is ABA therapy for autism?
ABA (Applied Behavior Analysis) is a therapy based on radical behaviourism — the theory that behaviour can be shaped through environmental consequences. In autism contexts, it typically involves intensive sessions targeting "problem behaviours" for reduction and "functional skills" for reinforcement. Created in the 1960s by O. Ivar Lovaas, ABA's foundational goal was to make autistic children "indistinguishable from their neurotypical peers." It remains the most widely prescribed autism intervention in the English-speaking world. It is also the intervention that autistic adults who experienced it as children most consistently describe as harmful — a disconnect that the mainstream account of ABA rarely acknowledges.
Is ABA therapy harmful to autistic people?
The research evidence and autistic adult testimony consistently say yes — particularly in its traditional forms, and in any form that retains the goal of making autistic people appear neurotypical. A 2018 study found autistic people exposed to ABA were 86% more likely to meet PTSD diagnostic criteria than unexposed autistic people. A 2021 peer-reviewed study documented predominantly negative long-term impacts on autistic adults' sense of identity and mental health. Only 5% of autistic adults support ABA therapy. These findings don't mean every individual ABA experience is traumatic — but they do mean the harm is systemic and documented, not anecdotal and exceptional, and that the autistic community's concerns deserve to be taken seriously rather than dismissed as misinformation.
Is ABA therapy similar to conversion therapy?
The connection is direct and documented, not metaphorical. O. Ivar Lovaas, the creator of ABA, simultaneously developed the foundational techniques for gay conversion therapy at UCLA in the 1960s and 70s, using the same behavioural framework. His collaborator on the "Feminine Boy Project" — designed to prevent boys from being gay or transgender — was George Rekers, who later co-founded the Family Research Council and became a central figure in gay conversion therapy. Gay conversion therapy has been banned in many jurisdictions, including Australia. ABA has not, primarily because autism is classified as a disorder in the DSM while sexual orientation is not — not because the underlying techniques or goals are meaningfully different.
What do autistic adults say about ABA therapy?
Autistic adults who experienced childhood ABA consistently describe a specific set of lasting impacts: difficulty trusting their own emotional and physical responses; an inability to say no to demands; shame about their special interests and stimming; and a pervasive sense that their natural way of being was unacceptable. The 2021 "Recalling Hidden Harms" study documented these impacts in a peer-reviewed context. The Autistic Self Advocacy Network, the leading autistic-led disability rights organisation, formally opposes ABA. Only 5% of autistic adults support the therapy. These accounts have been systematically dismissed by the ABA industry as "anecdotal" — which autistic researchers describe as a form of ableism: dismissing disabled people's accounts of their own experience specifically because of their disability.
What is "quiet hands" in ABA therapy?
"Quiet hands" is the instruction given in ABA therapy to stop a child from stimming — making repetitive hand movements that serve a regulatory function. It is one of the most widely cited examples of ABA harm in autistic community accounts, because it specifically targets something the autistic nervous system does to manage sensory and emotional load, and teaches the child that this natural response is unacceptable. Autistic adults who were given the "quiet hands" instruction as children consistently describe lasting difficulty accessing the regulatory benefits of stimming, and lasting discomfort with their own natural physical impulses. Julia Bascom's 2012 essay "Quiet Hands" — written from inside autistic experience — remains one of the most powerful accounts of what this instruction actually communicates to the child receiving it.
What are alternatives to ABA therapy for autism?
Approaches that autistic adults and autistic-led organisations consistently describe as more helpful include: speech and language therapy that accepts all communication modalities as valid; occupational therapy focused on reducing environmental sensory demands rather than training tolerance; AAC (Augmentative and Alternative Communication) support; Relationship Development Intervention (RDI); DIR/Floortime; and explicitly neurodiversity-affirming psychological support. The common thread is not specific methodology — it is starting from the assumption that the autistic person, as they are, is not a problem to be solved. What therapy looks like when it starts from that assumption is fundamentally different from what it looks like when it doesn't.
What should I ask an ABA provider before starting therapy?
If you are a parent evaluating ABA for your child, consider these questions: Is suppression of stimming a goal of this programme? Is eye contact a goal? How is success measured — and does "appearing more neurotypical" feature in that measurement? What does this provider know about the autistic community's documented concerns about ABA, and how do they respond to them? How is the child's own experience and feedback incorporated into goal-setting, including when the child cannot yet verbalise it? Does the programme use extinction (ignoring distress responses until they stop)? What is the provider's position on assent — can the child say no? Providers who respond to these questions defensively rather than thoughtfully may be telling you something important about their approach.
What is the difference between ABA therapy and neurodiversity-affirming therapy?
The difference is foundational, not just technical. ABA — including most forms of "modern" ABA — starts from the premise that autistic traits are problems to be modified. Neurodiversity-affirming therapy starts from the premise that autistic neurology is a different way of being, not a defective one, and that support should help the autistic person navigate their environment more comfortably on their own terms rather than conform to neurotypical norms. In practice this means: goals are set by and for the autistic person, not on their behalf by others. Natural regulation behaviours like stimming are not targeted for reduction. Success is measured by the autistic person's own wellbeing, not by how neurotypical-looking they become. The autistic person's no is respected. These are not minor stylistic differences. They reflect fundamentally different views of what autism is and what support is for.