Handwriting as you age can tell you more than you think

Researchers from Portugal have tested whether writing differs between older people with and without cognitive impairment. It turned out that simple pen movements, such as lines and dots, did not differ between the groups. Dictation writing, on the other hand, was more sensitive: people with cognitive impairment had slower, more fragmented and less organised movements over time. The work is published in Frontiers in Human Neuroscience.

Important: this does not mean that you can independently identify dementia from handwriting. Handwriting changes for many reasons - arthritis, tremor, vision problems, fatigue, medication or neurological disease. This is about a possible additional tool for doctors, not a home diagnosis.

Details

The study involved 58 older adults between the ages of 62 and 92 who lived in care facilities. Thirty-eight participants had already been diagnosed with cognitive impairment; the rest were part of a comparison group. All of them performed tasks with a pen on a digital tablet: the device recorded not only the final text, but also the writing process itself.

There were several tasks. In simple pen control tests, participants drew horizontal lines and dots in a limited amount of time. In more complex tasks, they wrote sentences: some had to be transcribed from a card, others had to be written from dictation.

The simple tasks did not reliably distinguish people with cognitive impairments from those without. This is logical: lines and dots mainly test motor skills - the extent to which a person can control his or her hand and pen.

Dictation turned out to be different. It requires more mental work: you have to hear a phrase, understand it, keep it in your memory, convert sounds into letters and simultaneously control your hand movement. It was in such tasks that the differences between the groups became more noticeable.

The scientists paid attention to several parameters: how long a person starts writing, how long the writing lasts, how the strokes are organised, how large the elements are. In participants with cognitive impairment, the delay before writing, the duration of writing and the number of strokes were particularly important.

In other words, it wasn't just the appearance of the handwriting that mattered. Researchers were interested in how the person wrote: how quickly they started, how smoothly their hand moved, and whether the writing broke up into separate fragments.

Why it's important

Such methods can be useful for early observation of the elderly. A digital tablet and pen can capture details that a doctor or relative may not always notice with their eyes. For example, a person may be able to write a phrase correctly, but do so much more slowly and with more pauses.

If the results are confirmed in larger studies, letter analysis could become an inexpensive and non-invasive addition to routine cognitive assessment. It could be used in doctors' offices, care facilities or elderly follow-up programmes.

But the limitations are significant. The sample was small and specific: all participants lived in care facilities. The study does not show how the method would work in older people living independently, in people with different levels of education, or in those who rarely handwrite. The authors also note that future work needs to take into account medications and other factors that may affect hand movement.

Background

Researchers are increasingly looking at movement as a source of information about cognitive health. Memory and attention do not change in isolation from the body: reduced cognitive control can be reflected in gait, reaction speed, coordination and fine motor skills.

Handwriting is particularly interesting in this sense. It connects language, memory, attention, hand-eye coordination and precise finger movements. A 2026 review in Frontiers in Aging Neuroscience emphasises that ageing and neurodegenerative diseases can alter both the neural mechanisms of handwriting and the motor processes that underlie it.

That said, simply observing handwriting is no substitute for medical diagnosis. But digital tools allow us to measure writing more precisely: speed, pauses, pressure, trajectory, stroke duration. These are the parameters that can be more useful than a subjective assessment of "handwriting has gotten worse".

Source

Ana Rita Matias et al, "Handwriting Speed and Pen Motor Control in Older Adults With and Without Cognitive Impairment," Frontiers in Human Neuroscience, 2026.

Fifty-eight older adults 62-92 years old, including 38 with previously diagnosed cognitive impairment, participated in the study. They performed pen-and-paper tasks on a digital tablet: drawing lines and dots, rewriting sentences, and writing from dictation. The most sensitive tasks were the dictation tasks, where you have to listen, hold information in memory, process language and control hand movement at the same time.