Special interests

In community writing, a special interest is a subject an autistic person is drawn to with unusual depth and intensity, often for years. Megan Griffith describes special interests as areas where a person becomes "essentially an expert" through months, and more often years, of research and immersion. "Literally anything can become a special interest," she writes, and although they often span a lifetime, they do not have to.^c1 Devon Price writes that some autistic people "cycle through new special interests every couple of months" while others stay with one topic for life, and that being obsessed with a subject "isn't a choice, and does not necessarily reflect our values or beliefs."^c2 Pete Wharmby writes that special interests "seem to take up more space in our heads than regular hobbies do for neurotypical people."^c14 Orion Kelly goes further and says they are not hobbies at all: "Our interests are like oxygen to an Autistic person; our lifeblood that we must live and breathe as often as possible."^c15

Writers who discuss ADHD as well separate a special interest from a hyperfixation. Griffith defines a hyperfixation as an intense interest that lasts longer than a day or two "but often isn't quite as long-lasting as an autistic special interest", and links it with ADHD.^c1 Daniel M. Jones notes that special interests are "often called 'Obsessive Interests'" and calls them "an integral part of life" for autistic people.^c3 Megan Anna Neff calls her habit of needing to understand a subject in its entirety her "special interest ecosystem".^c4

Talking about an interest at length is often called infodumping. Sol Smith writes, "No one has engaged in more info dumping than I have," and has built a career on it.^c5

The clinical idea is older than the everyday phrase. In 1954, the psychiatrists J. Franklin Robinson and Louis J. Vitale published "Children with circumscribed interest patterns" in the American Journal of Orthopsychiatry.¹ Steve Silberman's history of autism describes the children in it: their fascinations clustered in "rather odd spots", such as astronomy, chemistry, bus schedules, calendars and maps, and they pursued them for "satisfaction from within the child". In an afterword, Leo Kanner argued that in his own autistic patients "the circumscribed interest has often been foisted on them by their parents."^c6

Research still uses the clinical terms "circumscribed interests" and "restricted interests".² Some researchers have recently proposed separating restricted interests, common topics such as films or animals held with unusual intensity, from unusual interests, topics rarely seen outside autism, such as traffic lights; they call their evidence for the split preliminary.³ The DSM-5 (2013) lists "highly restricted, fixated interests that are abnormal in intensity or focus" as one of four restricted, repetitive patterns of behavior, at least two of which are needed for a diagnosis, so this criterion is not required in every autistic person.⁴ In the sources reviewed here, no one is credited with coining "special interest". Autistic writers use it as the everyday term, and Griffith notes that some people prefer "specialized knowledge" or "areas of expertise".^c1

Many autistic writers describe special interests as part of who they are. Neff writes: "Because interests and identity are so interwoven for Autistic people, embracing your interests is a form of embracing your identity."^c4 Price tells the story of Clara, who hid her love of the singer Pete Burns when she went to college, found it hard to make friends, and became depressed. She recovered after moving home to her collection and reconnecting with online friends: "It was like coming back to life," she says.^c2 Price counts reclaiming passions and special interests as a step in unmasking.^c2

Several writers describe interests as a refuge. Wharmby, a former secondary school teacher, calmed his panic before lessons by reading about steam locomotives from the 1950s: "I use my special interests as a haven, a place I can go to when everything else seems too stressful."^c14 He believes that losing time for his interests after becoming a parent was a large part of his burnout, and his first piece of advice is: "Never curtail an autistic person's access to their interests."^c14 In a clinicians' guide by Donna Henderson, Sarah Wayland and Jamell White, an autistic contributor, Emily R., says, "Being without a special interest can feel very similar to depression for me; my sense of self fades, and everything feels effortful."^c16

Interests are also described as a way into friendship. Neff writes that autistic people "usually feel the strongest sense of connection when engaging with others over shared interests and values", rather than through small talk.^c7 Griffith tells friends that when she talks at length about a favorite show, she is "trying to use my interests to connect with them."^c8

Some writers reject the clinical wording. Smith calls "narrow interests" "one of the dumbest labels listed as a symptom of autism", and writes that the word "narrow" may be the main reason for "never having caught on to being autistic until my forties."^c5

How many autistic people have a special interest depends on who is asked and how. In a survey of autistic adults, about two thirds reported one, more often men than women, and most had more than one.⁵ Parent-report surveys of children, which ask about many categories of interest, count interests rather than people: in one, of 1,992 autistic children, parents reported an average of nine current interests on a new questionnaire being piloted.⁶ A later study by the same group, with a sample of similar size that may overlap, did not measure how common interests are.¹⁵

The number of interests may not set autistic people apart. Two studies from separate research groups compared autistic and non-autistic children and teenagers without intellectual disability, 50 against 50 in one and 109 against 76 in the other. Both found about the same number of interests in each group, but different types and intensity.^2,7 In the larger one, intensity alone sorted 81% of that sample correctly into the two groups, a result not yet tested in a new sample.⁷ In the other, autistic children's interests were more often nonsocial, such as mechanical systems, and their parents reported more interference with daily life, more resistance when interrupted, and less involvement of other people.²

Topics vary widely. Adults in the survey named computers, autism, music, and nature and gardening, among others.⁵ In a 2026 study of online forum posts by autistic adults, academic topics came up in about half of the posts and psychology in 29%. Many posts described interests across many different fields, and words about seeking knowledge, such as learn, read or research, were the most common, in 52% of posts. Self-regulation was given as a purpose in 9% of posts, career in 6% and socializing in 4%. The posters chose what to write, and their diagnoses were not checked.⁸ In a parent-report study of 1,892 autistic children, both restricted and unusual interests were common.³

Reviews of what autistic young people, their parents and autistic adults say agree that interests matter to them. A review of 37 qualitative studies of autistic young people and their parents found "internally driven sources of happiness" among the themes of wellbeing, and recommended giving young people opportunities to enjoy their special interests.⁹ A review of 35 studies in which autistic adults described their own repetitive behaviors, special interests among them, found these behaviors helped people manage emotions and attention. Awareness of stigma led many to hide them, and hiding was itself stressful. Most of the studies in that review were about sensory experiences, and most participants were white adults of average or higher IQ.¹⁰

Studies that measured wellbeing are few, and each measured people at one time only. In the adult survey, people with a special interest did not differ in subjective wellbeing from people without one. Among those with one, stronger motivation to pursue it went with higher wellbeing, while very intense engagement went with lower wellbeing. The authors also linked special interests with satisfaction in areas of life such as social contact and leisure.⁵ An earlier study by the same group found that autistic adults were more motivated than other adults by the interest and knowledge itself, and by absorption, or flow.¹¹

In a 2026 online survey of 60 autistic and 122 non-autistic adults, the autistic group spent about twice as many hours a week on their interests (28.6 against 14.2). They rated their interests as a stronger source of learning and knowledge, were more likely to turn to them when upset or exhausted, and reported more stigma and negative consequences because of them.¹² The autistic participants' diagnoses were self-reported, and the two groups differed in gender, education and employment.¹²

On average, autistic males score slightly higher than autistic females on measures of restricted interests. A 2024 meta-analysis found a small difference (a standardized difference of 0.18), and no sex difference in insistence on sameness or in sensory experiences.¹³ Its narrative review also found differences in how these behaviors show in females and males, which its authors say current diagnostic tools may not capture, so part of the gap may come from the measures.¹³ A review of adults' own reports found no gender difference in the amount or intensity of repetitive behaviors, though few of its studies looked at gender.¹⁰

The topics differ more than the strength. In parent surveys from Australia, recruited through social media, and from the United States, autistic girls and boys were about equally likely to have special interests, and the topics generally followed traditional gender lines.^14,15 In the larger study, of 1,921 autistic young people, girls and boys did not differ in the age their interests began, how long past interests lasted, or how unusual or disruptive parents found them, and differed only slightly in how many interests they had. Gender differences appeared in 39% of interest categories: more boys were interested in math and construction, and more girls in animals and arts and crafts.¹⁵ A third study, of 1,892 children, found differences in the content of interests but not their intensity, with girls more likely to have interests with a social side.³ In the adult survey, more men than women reported a special interest.⁵

The authors of the meta-analysis suggest that these differences may help explain why autism in girls is under-recognized.¹³ The authors of the 1,921-child study began from the same concern, but found girls and boys more similar than different.¹⁵ Neither study tested diagnosis directly.

Matching jobs to interests is a common recommendation, but there is little evidence on it. In an online survey of adults with autism and typical IQ, participants spent an average of 26 hours a week on their special interests and rated their skill in them as very good. Their interests lay in the social sciences and creative fields as often as in the natural sciences and technology, and most approached them by systemizing, that is, by working out rules and structures.¹⁶ In an online survey of 136 people with Asperger syndrome and 155 others, the Asperger group's job interests clustered in investigative and conventional work, and their fields of study and work were more varied than earlier writing had suggested.¹⁷ In a US national sample of young adults who had received special education for autism, 34% of those who went to college chose a STEM subject, more than in every other disability group and more than a general-population figure from another source (23%), although their college enrollment was among the lowest.¹⁸

Whether interests give autistic employees an edge has not been shown. A 2020 systematic review found six studies of autistic employees' performance at work, and concluded there is no strong evidence for or against an "autism advantage" tied to interests or other repetitive traits.¹⁹ In a 2019 commentary, researchers cautioned that a job matched to an interest can still fail on the job's demands, its stress, or the labor market.²⁰ In a single case study, an autistic teenager with a verbal IQ in the intellectual disability range, a severe language disorder, and modest calendar-calculating and musical abilities did better after his support moved away from school performance toward his interests for their own sake; with one person and no comparison, the change cannot be credited to the support. The authors warn that trying to turn modest abilities directly into school success or paid work may do harm.²¹

The name itself is disputed. A 2021 guide to avoiding ableist language in autism research says many autistic people find "special interests" patronizing, and suggests "focused", "intense" or "passionate interests", or "areas of expertise".²² In interviews with 15 autistic advocates, the term meant different things to different people, but most found it at least somewhat useful.²³ Some researchers argue that "restricted" and "circumscribed" carry a deficit view, and one argues that adults' interests are "not restricted but wide-ranging".^12,8 The autistic researcher Patrick Dwyer argues that the DSM's "restricted, fixated interests" reflects "subjective, unscientific, and value-laden judgements", and suggests "focused, intense interests" instead.²⁴ Henderson, Wayland and White, writing for clinicians, call "restricted" a problematic term "because there is no clear, objective way to know if something is truly restricted", and write "atypical" where the DSM says "abnormal".^c16 Kelly objects to the other word: "In my view, the use of the word 'special' is an insult."^c15 M. Remi Yergeau, an autistic rhetoric scholar, describes how a diagnosis retold a childhood in clinical terms: "my years-long obsession with maps and the Electric Light Orchestra became perseverations".^c17

Writers disagree about whether an interest should earn its keep. Sarah Nannery treats a purely enjoyable interest as a reward or short break to be managed, warning that overindulging is "almost like the temporary high of a narcotic", and urges young people to explore how their interests could become work.^c9 Jones advises, "Build or create work experiences around your special interest."^c10 Price argues that adults are shamed for an obsession only when it is "a bit too 'strange'" and brings no achievement or money, and criticizes behavioral therapy for penalizing children who talk about their interests.^c2 In a later book, Price writes that autistic people are "frequently shamed for having special interests" and suggests sharing them on purpose with friends and family.^c11 Griffith describes the opposite risk: some autistic people avoid hobbies they love because they fear getting lost in them, forgetting to eat or rest.^c8

Gender is part of the argument. Eric Garcia reports the autistic scholar M. Remi Yergeau's point that the usual examples of special interests are cars and trains, and that ponies are rarely given as an example. Garcia quotes an autistic girl in the graphic novel Camouflage who was told "all girls like ponies, that's not a special interest".^c12 Bianca Toeps makes the same point about girls who know everything about horses.^c13 Haley Moss, writing to parents of autistic daughters, describes being urged in fourth grade to drop her video games and trading cards to fit in with the girls, and later playing Pokémon only when no one was around because she thought she was "too old".^c18 She asks parents to support a daughter's interests even when they are not "age appropriate" or "girly".^c18

What lies underneath is also unsettled. Monotropism, a theory proposed by autistic writers, holds that attention gathers into a few deep channels, with special interests at the center. The forum study's author argues that seeking knowledge, rather than calming down, is the main purpose of autistic interests.⁸