High Functioning vs Low Functioning Autism: Why These Labels Are Harmful
The terms “high functioning” VS “low functioning” are a commonly used comparison within society when referring to people who are impacted by disabilities and can have detrimental effects within practice.
It is important to consider client dignity with respect to utilization of these terms, and uphold Trumpet’s core value of integrity with the clients we serve. For example, it is important to engage in perspective taking and identify how you may feel if someone referred to you as a “low-functioning” person: likely not good. Understanding why these terms are problematic is the first step toward more respectful, accurate communication about autism.
What Do High Functioning and Low Functioning Mean?
High Functioning Meaning
The high functioning meaning typically refers to individuals with autism who speak fluently, appear to manage daily tasks independently, and may not require significant support in obvious ways. A high functioning person might hold a job, live independently, and navigate social situations with some success.
Low Functioning Meaning
The low functioning meaning describes individuals with autism who need substantial support with daily activities, may have limited or no spoken language, and display behaviours that others find more “obviously autistic.” A low functioning person or low functioning adult might require assistance with personal care, communication, and safety.
It’s tempting to define high functioning and low functioning this simply, but these labels create serious problems in how we understand and support autistic people.
Why These Labels Are Harmful
The high functioning versus low functioning framework oversimplifies autism in ways that hurt everyone on the spectrum.
They Ignore Individual Strengths and Challenges
Autism affects each person differently. Someone might excel at mathematics but struggle with personal hygiene. Another person might be nonverbal but possess remarkable problem-solving abilities. The functioning labels erase this complexity.
When we define high functioning as “less autistic” or “better,” we dismiss the real challenges these individuals face. They may struggle intensely with sensory overload, anxiety, or executive function but receive less support because they “look fine.” This leads to burnout, mental health crises, and feelings of being misunderstood.
Meanwhile, describing someone as low functionality suggests they have nothing to offer or no potential for growth. This can result in lowered expectations from caregivers, educators, and clinicians.
Support Needs Change Over Time
A person’s support requirements aren’t always static. Someone might appear “high functioning” in familiar environments but require significant help in new situations. Stress, illness, or life changes can dramatically shift what someone needs.
Functioning labels suggest a permanent, unchanging state. This doesn’t reflect reality and can prevent people from accessing appropriate support when circumstances change.
They Centre Observer Comfort, Not Autistic Experience
These labels describe how autism appears to non-autistic people, not how it feels to be autistic. A “high functioning” classification often means “doesn’t make me uncomfortable,” while “low functioning” suggests “their autism is obvious and challenges me.”
This observer-focused framework prioritises the comfort of neurotypical people over the actual experiences and needs of autistic individuals.
What Language Should We Use Instead?
The autism community and informed professionals have moved toward more respectful, accurate language.
Person-First Language
Instead of defining someone by a functioning level, describe them as a “person with autism” or “child with autism.” This recognises their full humanity first. Some autistic people prefer identity-first language (“autistic person”), so when possible, follow individual preferences.
Describe Specific Support Needs
Rather than broad functioning labels, specify what support someone needs: “requires assistance with communication,” “needs support with daily living skills,” or “benefits from visual schedules.” This provides actionable information without reducing someone to a single label.
At BlueSprig, we create individualised treatment plans based on each child’s unique strengths and challenges. We avoid functioning labels entirely because they don’t help us provide better care. What matters is understanding what each child needs to thrive.
Acknowledge the Full Spectrum
Autism is called a spectrum not because it runs from “mild” to “severe,” but because it affects different areas of functioning in unique combinations. For instance, someone might have strong verbal skills but struggle with motor coordination.
Recognising this complexity helps families, educators, and clinicians provide truly personalized support rather than generic interventions based on oversimplified categories.
Moving Forward with Respect
Language shapes how we think about and treat people. When we use functioning labels, we reduce complex individuals to simple categories that don’t serve them well.
By adopting person-first language and describing specific support needs, we acknowledge the full humanity of autistic people. We create space for their strengths while providing meaningful help where they need it.
If you’re a parent or guardian seeking support for your child with autism, look for providers who see your child as an individual, not a functioning level. Quality ABA therapy focuses on each child’s unique profile, building on strengths while addressing genuine challenges in ways that respect their dignity and potential.
The high functioning versus low functioning debate isn’t just about words. It’s about recognising that every autistic person deserves support tailored to their actual needs, respect for their individual experience, and the opportunity to live their best life.