The term “high-functioning autism” has become widespread in popular discourse, yet it carries significant misconceptions and limitations that impact how we understand and support autistic individuals. While not an official medical diagnosis, this phrase typically refers to what clinicians now classify as Level 1 Autism Spectrum Disorder (ASD) under the DSM-5 diagnostic criteria. In this comprehensive guide, we’ll explore what high-functioning autism really means, why the terminology is problematic, and what current research tells us about supporting individuals with Level 1 ASD.
The Evolution of Autism Terminology
From Asperger’s to Level 1 ASD
The American Psychiatric Association released the fifth edition of their Diagnostic and Statistical Manual of Mental Disorders (DSM-5) in 2013. Up to that point, autism and Asperger’s were two different conditions. But the DSM-5 changed that. It brought them (and several other developmental conditions) under the umbrella of autism spectrum disorder (ASD).
The DSM-5-TR subtypes autism into three levels based on support needs. Autism Level 1 has the least support needs and corresponds most closely with the “high-functioning” identifier. This shift represented a fundamental change in how we understand autism as a spectrum condition rather than separate disorders.
Why “High-Functioning” is Problematic
“High-functioning autism” isn’t a medical term. It’s an informal, vague, inaccurate and dehumanizing way of describing autistic people. Mental health professionals and autism advocates increasingly discourage the use of functioning labels for several critical reasons:
1. Oversimplification of Complex Needs
Many experts and autistic self-advocates argue that the terms “high- and low-functioning” lead to assumptions about a person that can be inaccurate and even offensive. It is also based on the premise that one’s support needs remain static, when in reality they can shift depending on the environment, the number of stressors, sleep quality, and more.
2. Masking of Real Challenges
Intelligence or verbal ability doesn’t equate to ease of daily life. An autistic child may have high verbal ability yet require assistance getting dressed, or they may be able to tolerate an environment one day but not the next.
Current Statistics: The Scope of Autism Spectrum Disorder
Rising Prevalence Rates
The prevalence of autism has increased dramatically over the past two decades. 1 in 36 (or 2.8%) of children in the US were identified with ASD using estimates from CDC’s Autism and Developmental Disabilities Monitoring (ADDM) Network. About 1 in 31 (3.2%) children aged 8 years has been identified with ASD according to estimates from CDC’s ADDM Network.
This represents a significant increase from historical rates. The rate of autism diagnosis has increased to 1 in 36 children, up from 1 in 44 in previous years. This has been a significant rise since 2000 when the prevalence was around 1 in 150—a 312% increase over two decades.
Global Context
According to the World Health Organization (WHO), autism affects approximately 1 in 100 children worldwide. However, this rate varies significantly in developing countries where diagnostic resources are less accessible, potentially leading to underreporting.
Gender Differences
Autism is diagnosed in boys at a rate roughly 4.2 times higher than in girls, with a male-to-female ratio of about 4:1. However, some studies suggest this ratio might be closer to 3:1 due to potential underdiagnosis in girls.
Girls are often more adept at masking or compensating for autism symptoms, which can delay diagnosis. Boys frequently show motor skill delays earlier than girls, leading to quicker identification. Standard diagnostic criteria were initially based on male behavioral patterns, potentially overlooking or misinterpreting signs in girls.
Understanding Level 1 Autism Spectrum Disorder
Official DSM-5 Criteria
The DSM-5 introduced three ASD levels of severity: level 1 (“requiring support”), level 2 (“requiring substantial support”), and level 3 (“requiring very substantial support”).
People at this level may have symptoms that don’t interfere too much with their work, school, or relationships. This is what most people are referring to when they use the terms high-functioning autism or Asperger’s syndrome.
Characteristics of Level 1 ASD
Individuals with Level 1 ASD typically demonstrate:
Social Communication Challenges:
- Difficulty initiating social interactions
- Problems with back-and-forth conversation
- Challenges reading nonverbal cues
- Appearing disinterested in social relationships
Restricted and Repetitive Behaviors:
- Inflexible routines that interfere with functioning
- Difficulty switching between activities
- Organizational problems that impact independence
Generally, children at this level have more mild symptoms, but still have a hard time communicating appropriately or engaging with others. For example, they may not say the right thing at the right time or have difficulty reading social cues and body language. This is what most people previously referred to when they used the terms “Asperger’s syndrome” or “high-functioning autism”.
The Hidden Challenges: Masking and Its Impact
Understanding Masking
Masking entails hiding or concealing one’s traits during social interactions. Research suggests that masking is particularly common for autistic people, though many non-autistic people also conceal aspects of their identity.
To ‘mask’ or to ‘camouflage’ means to hide or disguise parts of oneself in order to better fit in with those around you. It is an unconscious strategy all humans develop whilst growing up in order to connect with those around us. However, for us autistic folk the strategy is often much more ingrained and harmful to our wellbeing and health.
The Cost of Masking
Research reveals significant mental health implications associated with masking behaviors:
Much of the existing literature supported three preliminary findings about the nature of autistic camouflaging: adults with more self-reported autistic traits report greater engagement in camouflaging; sex and gender differences exist in camouflaging; and higher self-reported camouflaging is associated with worse mental health outcomes.
Studies are now beginning to find how detrimental to our mental health masking can be. Autistic people who mask more show more signs of anxiety and depression, and the strategy may even been linked to an increase in suicidal behaviors.
Workplace Masking
Workplace masking was considered by participants in all three groups to be an adaptive response to a range of socially grounded workplace challenges and was usually employed as a strategy to safeguard against the threat of negative social and employment outcomes. Non-autistic neurodivergent and autistic participants, however, reported experiencing unique pressures to mask, given the limited understanding of neurodiversity in workplaces and society more broadly.
Employment and Adult Outcomes
Employment Statistics
The employment landscape for autistic adults presents significant challenges:
With low rates of employment reported for autistic people worldwide, including participants in this sample (~40% employed across waves), research has sought to understand the employment experience of autistic adults and what factors might help identify barriers to employment.
Only 21% of people with disabilities, including autism, are employed. Nearly 60% of people with autism in the U.S. are employed after receiving vocational rehabilitation (VR) services.
Factors Affecting Employment Success
Research has identified several factors that influence employment outcomes for autistic adults:
Later age of diagnosis was significantly positively associated with membership of the employed class. Identifying as male was a positive predictor for those who reported stable employment. This can be accounted for by challenges often more frequently experienced by females, but also may reflect the additional challenges autistic women face, such as challenges due to masking, mental health, and social and communication difficulties.
Success Stories in Employment
Despite challenges, there are encouraging developments:
James Mahoney, the head of Autism at Work (at J.P Morgan Chase and Co), says that autistic employees were as much as 140% more productive than their peers.
Data shows that the employment rate of young adults with autism increased over time after high school. The percentage of those who had ever been employed rose from 32% within 0-2 years after high school to 93% after 6-8 years since high school.
Educational Outcomes and Support
Academic Performance
74% of autistic students in the U.S. graduate with a diploma, versus 86% of all students. 19% of autistic students in the U.S. graduate with a certificate. 8% of autistic students in the U.S. don’t finish high school, versus 5% of all students.
Intervention Effectiveness
Meta-analyses showed that experimental treatments were significantly more efficacious than waiting list or standard care/ control treatments in improving social skills, as well as reducing behavioral symptoms and anxious/depressive symptoms. At the group level, social skills training for adolescents with Level 1 ASD is efficacious, with small-to-moderate effect size.
Moving Toward Better Understanding
The Importance of Individual Support Needs
The support level indicated with an autism diagnosis is only a snapshot in time for that person. Support levels can and do change over time. A person may need less support as they learn new skills, gain confidence, become experienced with people, settings and demands that were once challenging for them. Someone might need more support as they transition to a new school or job, enter puberty, or face other unfamiliar circumstances for the first time. In fact, an autistic person’s need for support with their autism symptoms can even change from day to day, or within a given day, depending on what’s going on for that person at that time.
Person-Centered Language
“I try to educate parents so that they use the term ‘level one autism’ instead,” she says. Healthcare professionals increasingly recommend using specific, descriptive language rather than functioning labels.
Instead of using overgeneralized labels, it’s best to talk specifically about what supports each autistic individual needs and when. When in doubt, ask whether someone prefers person-first language (person with autism) or identity-first terminology (autistic).
Supporting Individuals with Level 1 ASD
Recognition of Strengths
Living with autism spectrum disorder isn’t just about the challenges; it also includes a range of unique strengths and talents. Many people with autism demonstrate amazing abilities and interests, often possessing an intense passion for their topics of interest. An intense focus and attention to detail can lead to impressive achievements in their areas of interest. For example, there is an increasing number of autistic individuals in the workforce, especially in STEM-related careers. When we recognize and support these strengths, we can help individuals with ASD make a significant difference in their communities and the larger world.
Early Intervention and Ongoing Support
Autism can be reliably diagnosed by a specialist by age 2, but the average age of autism diagnosis in the U.S. is 5 years. The average age of first intervention in the U.S. is 4.7 years. The average age of diagnosis for children in lower income households is 4.7 years compared to 5.2 years in higher income households.
The Future of Autism Understanding
Research Directions
Future research should focus on personalized medicine approaches, aimed at tailoring interventions to specific characteristics of adolescents with Level 1 ASD.
Effects of camouflage on mental health and daily life measures of individuals such as employment, university graduation, relationship, financial status, and quality of life should be studied with more details in future studies. Effects of camouflage on daily life measures of individuals such as employment, university graduation, relationship, financial status, and quality of life should be studied with more detail in future studies.
Creating Inclusive Environments
It is known that autistic adults are more likely than their non-autistic peers to experience challenges with mental health, often attributed to the marginalizing experience of being autistic in neurotypical spaces and the pressure to mask or camouflage autistic traits in order to ‘fit in’. Given that the mental health implications of masking and camouflaging can be detrimental, a need for de-stigmatization of autistic traits and experiences is necessary.
Conclusion
The term “high-functioning autism” may seem helpful on the surface, but it oversimplifies the complex reality of autism spectrum disorder. Level 1 ASD, the clinical term that has replaced this colloquial phrase, better reflects the nuanced support needs of individuals who may appear to navigate daily life independently while still facing significant challenges.
Current research reveals that about 1 in 31 (3.2%) children aged 8 years has been identified with ASD, representing a substantial portion of our population who deserve understanding, support, and accommodation rather than labels that minimize their experiences.
As we move forward, the focus should shift from functioning labels to understanding individual strengths, challenges, and support needs. This person-centered approach not only provides better outcomes for autistic individuals but also creates more inclusive communities that benefit everyone.
The journey toward better autism understanding requires continued research, education, and most importantly, listening to the voices of autistic individuals themselves. By moving beyond simplistic labels like “high-functioning,” we can build a society that truly supports neurodiversity and recognizes the valuable contributions of all individuals on the autism spectrum.
References
- CDC Data and Statistics on Autism Spectrum Disorder
- High-functioning autism – Wikipedia
- What Is ‘High-Functioning Autism’? – Cleveland Clinic
- The workplace masking experiences of autistic, non-autistic neurodivergent and neurotypical adults in the UK – PMC
- Autism statistics and facts – Autism Speaks
