Subtypes of autism by cluster analysis.
Four data-driven autism subtypes give you a quick map for picking goals that fit each learner.
01Research in Context
What this study did
The team fed many kinds of data into a computer. Test scores, language samples, and behavior notes all went in.
The computer grouped children with autism into four clusters. Each cluster had its own pattern of strengths and needs.
What they found
Four clear autism subtypes showed up. One group might talk well but struggle with play. Another might have strong self-care skills yet poor eye contact.
The clusters were not based on guesswork. They came straight from the data.
How this fits with other research
Pickering et al. (1985) tried a smaller version of this idea. They also found cognitive subtypes, but their sample mixed many disabilities. C et al. kept the focus only on autism.
Matson et al. (2013) zoomed in on just repetitive behaviors. They found two tight sub-groups inside that one area. C et al. looked at the whole child, not just one behavior.
McCarron et al. (2002) later showed the Autism Behavior Checklist does not split into the five parts it claims. C et al. warn us: even broad subtypes need fresh data checks.
Why it matters
Stop using "one-size-fits-all" goals. Look at the four subtype patterns and pick the one that best matches your learner. Then write targets that fit that profile. Your session plan becomes sharper and progress often speeds up.
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02At a glance
03Original abstract
Multidisciplinary data from 166 children with autistic spectrum disorders were subjected to cluster analysis. Cross-validation between random halves of the sample showed acceptable consistency of the clustering method. Four clinically meaningful subtypes emerged from the analysis. They did not differ in demographic characteristics but did show, on average, distinct differences in behavioral and cognitive areas. Over half of the sample fell into a subtype described as typically autistic with abnormal verbal and nonverbal communication, aloofness, impaired social skills, and sensory disturbances. Another 19% were similarly autistic but with moderate to severe mental handicap. The remaining children formed two subtypes: a high-functioning Asperger-like group who were overactive and aggressive, and a small group who were impaired in social and language skills, had restricted interests, and a family history of learning problems. This study highlights important differences among children with autism and emphasizes relationships between cognitive functioning and subtypes of the disorder.
Journal of autism and developmental disorders, 1994 · doi:10.1007/BF02172209