Visual Search in ASD: Instructed Versus Spontaneous Local and Global Processing.

Van der Hallen et al. (2016) watched kids with and without autism do a visual search game.

The team told some kids to look for tiny details first. They told other kids to scan the whole picture first.

Then they counted how fast and how well each group spotted the target.

Both groups ignored extra pictures the same way. The distractors did not trip up either group.

The big change came from the instructions. Kids with autism did better when told to hunt details first. Typical kids did better when told to look at the whole scene first.

So the way you speak to the child, not the pictures, made the groups look different.

Guy et al. (2019) followed kids for years and saw the detail-first style stay strong in autism. Their work stretches the 2016 finding across childhood.

Vanmarcke et al. (2018) used real photos and got the same detail bias in autism. This repeats the pattern with everyday scenes instead of shapes.

Shirama et al. (2017) seems to clash. They found adults with autism search faster and more accurately than adults without autism. The gap closes when you notice Ruth tested children while Aya tested adults. Age, not autism itself, likely drives the speed boost.

Your prompt sets the stage. If you want a child with autism to find items quickly, say, "Look for the tiny part that is different." Save global cues like "Scan the whole page" for other learners. Match your language to the learner’s style and you will see fewer errors and less frustration.