ABA (Applied Behavior Analysis) therapy is the most widely used intervention for autistic children, but it faces serious criticism from autistic adults, advocacy organizations, and a growing number of researchers. The concerns range from its historical use of punishment to its modern focus on making autistic children appear “normal” at the cost of their emotional wellbeing. Understanding these criticisms can help you evaluate whether a particular therapy approach is genuinely helping or causing hidden harm.
The Origins of ABA and Aversive Methods
ABA was developed by O. Ivar Lovaas at UCLA in the 1960s. Early methods included food deprivation, shouting, and electric shocks to punish behaviors considered undesirable. A 1965 Life magazine photographic essay titled “Screams, Slaps, and Love” brought national attention to the aversive side of his work. Lovaas and his supporters argued that punishment made up only a small fraction of the program, with 98% being positive reinforcement, but the use of pain as a behavioral tool left a lasting mark on how many autistic people view the field.
The connection to conversion therapy is not just metaphorical. Lovaas conducted a study using ABA techniques to punish a young boy for what he deemed gender-nonconforming behavior, attempting to prevent the child from being gay. The Autistic Self Advocacy Network (ASAN) points to this shared origin, arguing that both ABA and conversion therapy use rewards and punishments to try to change who a person fundamentally is.
While most modern ABA programs have dropped overtly aversive techniques, some facilities still use them. The Judge Rotenberg Center in Massachusetts continued using electric skin shocks on disabled residents until the FDA banned the devices in 2020.
Masking and the Cost of Looking “Normal”
The central criticism of modern ABA is not about punishment. It is about the goal itself. ABA focuses on changing how autistic children act, training them to suppress behaviors like hand-flapping, rocking, or avoiding eye contact. Critics argue this teaches children to hide the things that make them “look” autistic, a process known as masking.
Research on masking paints a troubling picture. Autistic adults who mask report mental health difficulties, burnout, and confusion about their own identity. One 48-year-old woman described the experience this way: “I feel as though I am wearing a different person. I don’t know where I went, or who I could have become if I hadn’t been forced to be someone else.” The internal cost goes beyond discomfort. In a study published in Autism in Adulthood, autistic participants uniquely linked masking to suicidal thoughts, something not reported by other neurodivergent groups. One participant wrote: “I didn’t learn that I only get suicidal during meltdowns until I removed all masking obligations. I spent 13 years burnt out.”
Stimming, the repetitive movements many autistic people use to regulate their sensory experience and emotions, is a common target of ABA programs. But suppressing these behaviors removes a coping mechanism. When autistic people can’t stim, they lose an important tool for managing stress and sensory overload. Researchers have found that this long-term suppression can make it harder to recognize internal signals of distress, which intensifies mental health problems over time.
What “New ABA” Changes and What It Doesn’t
Defenders of modern ABA often distinguish it from the Lovaas era, pointing to play-based approaches, the removal of punishment, and goals centered on communication rather than compliance. These changes are real, and many individual therapists genuinely care about the children they work with.
But critics argue the underlying framework remains the same. ASAN’s position is blunt: “New ABA is still bad because it still hurts us. People might not be able to tell it hurts us.” The concern is that even when delivered gently, ABA still defines autistic behaviors as problems to fix. It still measures success by how closely a child approximates non-autistic behavior. It still prioritizes external compliance over internal experience. As one research team put it, ABA has come under increasing scrutiny for “failing to include autistic people in the design of intervention elements and consideration of goals,” while autistic people increasingly identify harm they experienced during treatment, concerns that are “often met with minimization rather than an endorsement of their validity.”
Weak Evidence and Widespread Conflicts of Interest
ABA is frequently described as the “gold standard” or “evidence-based” treatment for autism, but the quality of that evidence has significant problems. Meta-analyses that use well-established tools for assessing research quality, like the Cochrane risk of bias framework, have concluded there is insufficient evidence to support the strong effectiveness claims often made about ABA.
A systematic review of non-pharmacological interventions for autistic adults found that nearly 75% of included studies had a high risk of bias across all four measured domains. The studies were designed in ways that make their results unreliable.
A 2021 study in Frontiers in Psychology uncovered a striking pattern of undisclosed conflicts of interest. Researchers examined 180 ABA studies and found that 84% had at least one author who provided ABA clinical services or training consultations to ABA providers. Yet these conflicts were properly disclosed in only 2% of studies. Among studies that included a statement claiming no conflicts of interest, 87% were authored by researchers who did, in fact, have financial ties to the ABA industry. Across six journals that published conflict of interest statements, 79 to 100% of those statements falsely declared no conflicts. This does not automatically mean the findings are wrong, but it significantly reduces confidence in the research base that justifies ABA’s dominance as a recommended treatment.
What Autistic People and Advocates Say
ASAN, the largest autistic-led advocacy organization in the United States, opposes ABA entirely. Their position: “ABA is a bad service that hurts autistic people. It can’t help autistic people, even if it tries to.” Many autistic adults who went through ABA as children describe it as a form of “autistic conversion therapy,” an attempt to make autistic people not be autistic using rewards and punishments to change who they are.
A core complaint is that ABA focuses on observable behaviors without considering why those behaviors happen. A child who flaps their hands when overwhelmed is doing something functional. A child who avoids eye contact may find it physically uncomfortable or cognitively distracting. ABA programs often target these behaviors for reduction without addressing the sensory or emotional need behind them. As ASAN puts it: “ABA tries to change what we do. It doesn’t care about why we do the things we do.”
Neurodiversity-Affirming Alternatives
A growing body of work focuses on what researchers call neurodiversity-affirming interventions. These approaches start from a fundamentally different premise: that autism is a neurological difference, not a set of deficits to correct. Instead of training autistic people to look less autistic, they aim to support strengths, build genuine communication skills, and modify environments to reduce barriers.
Neurodiversity-affirming approaches reframe the goal from independence to interdependence, recognizing that all people rely on others and that autistic individuals benefit from collaboration rather than being pressured into self-sufficiency at all costs. These interventions also aim to avoid placing a disproportionate cognitive or emotional burden on the autistic person, something critics say ABA routinely does by requiring constant self-monitoring and suppression.
Early results from these newer approaches are promising in an unexpected way. They appear to positively affect the same areas traditionally targeted by ABA, like social connection, but without explicitly teaching rules for “correct” behavior. In other words, when autistic people are supported rather than corrected, some of the challenges that ABA tries to train away improve on their own through different, less harmful mechanisms. Speech-language therapy, occupational therapy focused on sensory needs, and developmental relationship-based models like DIR/Floortime all fall broadly under this umbrella, though the evidence base for specific programs is still developing.