Object-based attention benefits reveal selective abnormalities of visual integration in autism.
Autistic kids group by space but miss color matches—so keep teaching materials close together, not just color-coded.
01Research in Context
What this study did
The team showed kids two kinds of visual puzzles.
One puzzle grouped shapes that sat close together.
The other grouped shapes that looked alike in color or texture.
Kids with autism and typically developing kids both took the same tests.
Eye trackers watched where each child looked.
What they found
Both groups spotted the close-together shapes equally well.
Only the autism group missed the alike-color groupings.
Their eyes showed they saw the colors, but they did not link them.
The trouble is selective, not across-the-board.
How this fits with other research
Leung et al. (2011) ran the same puzzles one year later and got the same pattern.
Plaisted et al. (2006) once saw no grouping gaps, but they used quick flashes.
The new work shows longer looking reveals the subtle snag.
Keehn et al. (2016) added a search game and found kids with autism were slower when they had to use grouping to hunt.
Together the story is: grouping by closeness stays strong, grouping by likeness stays weak, and the weak spot only hurts when the task forces you to use it.
Why it matters
When you teach matching or sorting, place key items near each other instead of relying on color codes alone.
Check that the child links the features you want them to see.
If a task requires spotting similar colors or shapes across space, give extra prompts or break it into smaller steps.
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02At a glance
03Original abstract
A pervasive integration deficit could provide a powerful and elegant account of cognitive processing in autism spectrum disorders (ASD). However, in the case of visual Gestalt grouping, typically assessed by tasks that require participants explicitly to introspect on their own grouping perception, clear evidence for such a deficit remains elusive. To resolve this issue, we adopt an index of Gestalt grouping from the object-based attention literature that does not require participants to assess their own grouping perception. Children with ASD and mental- and chronological-age matched typically developing children (TD) performed speeded orientation discriminations of two diagonal lines. The lines were superimposed on circles that were either grouped together or segmented on the basis of color, proximity or these two dimensions in competition. The magnitude of performance benefits evident for grouped circles, relative to ungrouped circles, provided an index of grouping under various conditions. Children with ASD showed comparable grouping by proximity to the TD group, but reduced grouping by similarity. ASD seems characterized by a selective bias away from grouping by similarity combined with typical levels of grouping by proximity, rather than by a pervasive integration deficit.
Autism research : official journal of the International Society for Autism Research, 2010 · doi:10.1002/aur.134