Assessment & Research

Global visual processing and self-rated autistic-like traits.

Grinter et al. (2009) · Journal of autism and developmental disorders 2009
★ The Verdict

Adults with high autistic traits share the fast-local, weak-global visual style seen in autism.

✓ Read this if BCBAs who teach daily living or vocational skills to high-functioning teens and adults.
✗ Skip if Clinicians focused only on early-intervention learners with confirmed autism diagnoses.

01Research in Context

01

What this study did

The team asked adults without autism to fill out the Autism-Spectrum Quotient. They then split the group into high-trait and low-trait scorers.

Everyone completed two computer tasks: find hidden shapes inside bigger pictures and judge the direction of moving dots. Speed and accuracy were recorded.

02

What they found

High-trait adults found the hidden shapes faster, but they struggled to see the global motion of the dots. They showed a quick-local, weak-global pattern.

The result mirrors the visual profile seen in diagnosed autism, even though no participant had the diagnosis.

03

How this fits with other research

Sabatino DiCriscio et al. (2017) and Dolezal et al. (2010) saw the same speed boost on hidden figures in high-AQ adults, so the local advantage is reliable.

Bölte et al. (2007) and Nayar et al. (2017) also found weaker global perception, but in people with autism. The 2009 paper shows the trait exists outside the clinic.

Two studies seem to disagree. Storch et al. (2012) and Alonso Soriano et al. (2015) found no local boost in diagnosed autistic teens and adults. The gap likely comes from age and task differences: the 2009 study tested young neurotypicals with subtle traits, while the later work used older clinical samples with different tests.

04

Why it matters

You may see clients who score high on trait questionnaires but do not meet autism criteria. Expect them to spot tiny details quickly yet miss the big picture in busy visuals. When you teach matching, sorting, or safety signs, give extra time for whole-image cues and highlight global features with color or motion.

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Add a brief whole-image preview before detail drills: flash the full worksheet for two seconds, then zoom in on the target piece.

02At a glance

Intervention
not applicable
Design
quasi experimental
Population
neurotypical
Finding
mixed

03Original abstract

The current research investigated, firstly, whether individuals with high levels of mild autistic-like traits display a similar profile of embedded figures test (EFT) and global motion performance to that seen in autism. Secondly, whether differences in EFT performance are related to enhanced local processing or reduced global processing in the ventral visual stream was also examined. Results indicated that people who scored high on the Autism-spectrum Quotient (AQ) were faster to identify embedded figures, and had poorer global motion and global form thresholds than low AQ scorers. However, the two groups did not differ on a task assessing lower-level input to the ventral stream. Overall the results indicate that individuals with high levels of autistic-like traits have difficulties with global integration in the visual pathways, which may at least partly explain their superior EFT performance.

Journal of autism and developmental disorders, 2009 · doi:10.1007/s10803-009-0740-5