Short-Term Memory Span and Cross-Modality Integration in Younger and Older Adults With and Without Autism Spectrum Disorder.
Autistic adults score lower on memory-span tests yet show no age drop, hinting they tap executive skills to hold steady.
01Research in Context
What this study did
Ring et al. (2020) compared short-term memory spans in adults with and without autism.
They tested two age bands: younger adults and older adults.
Each person repeated lists of numbers to see how long a string they could hold.
What they found
Adults with autism scored lower than same-age peers on every list.
Surprise: the autism group did not drop with age, while the typical group did.
The authors think autistic adults lean on extra executive tricks to stay level.
How this fits with other research
Chien et al. (2016) saw the same kind of memory dip in autistic teens, but only on visuospatial tasks.
Chezan et al. (2019) also found that autistic adults use back-up brain routes to keep verbal skills steady as they age.
Zhang et al. (2026) later added MRI evidence: older autistic adults show brain-clearance problems and worse long-term memory, yet short-term spans stay flat — a tidy extension of Melanie’s finding.
Why it matters
If you test memory with standard span tasks, expect lower scores from autistic adults.
Do not assume cognitive decline just because the client is older; their curve may be flat.
Use visual aids, chunking, or rehearsal prompts — the same executive supports they already use — instead of cutting task length alone.
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02At a glance
03Original abstract
This study tested whether adults with autism spectrum disorder (ASD) show the same pattern of difficulties and absence of age-related differences in short-term memory (STM) as those that have been reported in episodic long-term memory (LTM). Fifty-three adults with ASD (age range: 25-65 years) were compared to 52 age-, biological sex-, and intelligence-matched typically developing (TD; age range: 21-67 years) adults on three STM span tasks, which tested STM performance for letters (Verbal), grid locations (Visuospatial), or letters in grid locations (Multimodal). A subsample of 34 TD and 33 ASD participants ranging in age from 25 to 64 years completed a fourth Multimodal Integration task. We also administered the Color Trails Test as a measure of executive function. ASD participants' accuracy was lower than that of the TD participants on the three span tasks (Cohen's d: 0.26-0.50). The Integration task difference was marginally significant (p = .07) but had a moderate effect size (Cohen's d = 0.50). Regression analyses confirmed reduced STM performance only for older TD participants. Analyses also indicated that executive processes played a greater role in the ASD group's performance. The demonstration of similar difficulties and age-related patterning of STM in ASD to those documented for LTM and the greater recruitment of executive processes by older ASD participants on the Integration task suggest a compensatory role of frontal processes both as a means of achieving undiminished task performance and as a possible protection against older age cognitive decline in ASD. Longitudinal research is needed to confirm this. Autism Res 2020, 13: 1970-1984. © 2020 The Authors. Autism Research published by International Society for Autism Research and Wiley Periodicals LLC. LAY SUMMARY: Little is known about short-term memory (STM) in younger and older adults with autism spectrum disorder (ASD). This study tested different kinds of STM and showed that ASD adults remembered shorter sequences of letters, crosses, or letters in grid cells less well than matched participants with typical development. However, older ASD individuals performed similarly to younger ASD individuals, nor showing the reduction in performance usually seen with older age. The data suggest that ASD individuals use different underlying mechanisms when performing the tasks and that this might help protect their memory as they grow older.
Autism research : official journal of the International Society for Autism Research, 2020 · doi:10.1002/aur.2387