A significant diagnostic gap threatens the growing population of aging adults with autism as clinicians struggle to distinguish between neurodevelopmental traits and progressive cognitive decline. The challenge stems from overlapping cognitive patterns that could mask early dementia symptoms or lead to false-positive diagnoses in this vulnerable population.
Researchers are launching a systematic examination of cognitive functions shared between autism and dementia versus those unique to each condition. The study protocol employs a newly developed Quality of Evidence Tool to analyze existing literature across major databases, specifically targeting cognitive assessments that could reliably detect dementia progression while accounting for baseline autism-related differences in executive function, memory processing, and social cognition.
This research addresses a critical clinical knowledge vacuum as the first generation of formally diagnosed autistic individuals enters older age. Current dementia screening tools were developed for neurotypical populations and may misinterpret autism-related cognitive patterns—such as difficulties with cognitive flexibility or working memory—as signs of pathological decline. Conversely, genuine dementia symptoms might be dismissed as autism traits, delaying crucial interventions. The implications extend beyond individual diagnosis to healthcare system preparedness, as autism prevalence has increased dramatically over recent decades, creating an emerging cohort requiring specialized geriatric care approaches. While this represents a protocol rather than findings, it signals recognition of an overlooked intersection in neurodevelopmental and aging research that could fundamentally reshape how clinicians approach cognitive assessment in neurodiverse older adults.