Assessment & Research

Exploring the 'fractionation' of autism at the cognitive level.

Brunsdon et al. (2014) · Autism : the international journal of research and practice 2014
★ The Verdict

Autism’s core features may stem from separate cognitive systems—so assess each skill area on its own.

✓ Read this if BCBAs who assess or write treatment plans for autistic clients of any age.
✗ Skip if Practitioners looking for ready-made intervention protocols.

01Research in Context

01

What this study did

Laugeson et al. (2014) wrote a narrative review. They asked: does autism come from one broken brain system or many?

They looked at past work on the classic triad: social, communication, and repetitive behaviors.

They argued each triad piece may have its own cognitive cause.

02

What they found

The paper says autism is not one thing. It is a bundle of separate cognitive problems.

Social struggles, language quirks, and rigid routines may each link to different brain circuits.

So a child could have great memory yet poor social skills, or vice versa.

03

How this fits with other research

Bhaumik et al. (2008) came first. They showed that Theory of Mind and central coherence track autistic traits across all kids, not just diagnosed ones. Laugeson et al. (2014) uses this as a base to say: look at each trait, not the label.

Cohrs et al. (2017) and Goldfarb et al. (2024) later proved the point. C et al. split advanced Theory of Mind into social-cognitive and social-perceptual parts. Yael et al. showed motor, EF, and ToM each add unique pieces to social skills. Both studies give real data for the fractionation idea.

Liyew et al. (2025) adds fresh cross-cultural evidence. Caregiver ATEC ratings in Ethiopian children broke into five clear sensory-cognitive patterns. This extends Laugeson et al. (2014) beyond Western samples.

04

Why it matters

Stop using one broad autism score. Instead, test social, language, sensory, and EF skills one by one. This lets you pick targets that truly matter for each learner.

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02At a glance

Intervention
not applicable
Design
narrative review
Population
autism spectrum disorder
Finding
not reported

03Original abstract

Autism spectrum disorders are defined by difficulties across a range of areas: social and communication difficulties and restricted and repetitive behaviours and interests. It has been suggested that this triad of symptoms cannot be explained by a single cause at the genetic, neural or cognitive level. This article reviews the evidence for a 'fractionable' autism triad at the cognitive level, highlighting questions for future research.

Autism : the international journal of research and practice, 2014 · doi:10.1177/1362361313499456