Local Processing Bias Impacts Implicit and Explicit Memory in Autism.
Kids with autism remember poorly when pictures share small matching parts, so keep your teaching materials visually distinct.
01Research in Context
What this study did
Redquest et al. (2021) showed kids with autism and typical kids a set of pictures. Some pictures shared small matching details. Later the kids tried to remember which pictures they had seen.
The team also tested priming. Kids saw a picture briefly, then saw it again. The researchers measured how much faster the kids recognized the second picture.
What they found
Kids with autism did fine on priming. They spotted repeated pictures just as fast as typical kids.
But when pictures looked alike, the autism group got mixed up. They picked the wrong picture more often. The small matching details tricked their memory.
How this fits with other research
Guy et al. (2019) saw the same local bias earlier. They found that kids with autism keep focusing on tiny parts even as they grow older. K et al. now link that habit to memory errors.
Soroor et al. (2022) flipped the script. They taught kids to look at the whole picture first. After that quick lesson, the kids with autism performed better on visual tasks. This shows the bias can be softened.
Huang et al. (2025) pooled brain scans from fifteen studies. The scans show that autistic brains light up in the visual cortex during these tasks, while typical brains use the parietal lobe. The new memory data match that pattern.
Why it matters
When you make flashcards or choice boards, keep the items clearly different. Avoid sets that share borders, colors, or shapes. If you must use similar images, point out the one key feature that sets the target apart. This small tweak cuts down on lure confusion and helps your learner show what they really know.
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02At a glance
03Original abstract
Autism spectrum disorder (ASD) is characterized by atypical perception, including processing that is biased toward local details rather than global configurations. This bias may impact on memory. The present study examined the effect of this perception on both implicit (Experiment 1) and explicit (Experiment 2) memory in conditions that promote either local or global processing. The first experiment consisted of an object identification priming task using two distinct encoding conditions: one favoring local processing (Local condition) and the other favoring global processing (Global condition) of drawings. The second experiment focused on episodic (explicit) memory with two different cartoon recognition tasks that favored either local (i.e., processing specific details) or a global processing (i.e., processing each cartoon as a whole). In addition, all the participants underwent a general clinical cognitive assessment aimed at documenting their cognitive profile and enabling correlational analyses with experimental memory tasks. Seventeen participants with ASD and 17 typically developing (TD) controls aged from 10 to 16 years participated to the first experiment and 13 ASD matched with 13 TD participants were included for the second experiment. Experiment 1 confirmed the preservation of priming effects in ASD but, unlike the Comparison group, the ASD group did not increase his performance as controls after a globally oriented processing. Experiment 2 revealed that local processing led to difficulties in discriminating lures from targets in a recognition task when both lures and targets shared common details. The correlation analysis revealed that these difficulties were associated with processing speed and inhibition. These preliminary results suggest that natural perceptual processes oriented toward local information in ASD may impact upon their implicit memory by preventing globally oriented processing in time-limited conditions and induce confusion between explicit memories that share common details.
, 2021 · doi:10.3389/fpsyg.2021.622462