Short answer: Yes, probably. In a study of 4,561 Australian adults followed for a median of 11.3 years, each standard-deviation increase in processing speed was linked to 32% lower mortality (hazard ratio 0.68), after adjusting for education, lifestyle and health factors. And in the ACTIVE trial of about 2,800 older adults, ten hours of adaptive speed-of-processing training, followed by booster sessions, was associated with a 25% lower incidence of dementia over 20 years. The honest version: the longevity link is observational, but processing speed is one of the few cognitive skills with randomised evidence that training it changes real-world outcomes.

Memory gets all the attention. Every biohacker worries about forgetting names, losing the thread in a meeting, walking into a room and blanking on why. But in October 2026, an Australian team published a finding that should rearrange that anxiety: of all the cognitive domains they measured, it was processing speed, not memory, that predicted survival most strongly. Faster minds did not just remember more. They lived longer.

That raises the question this article answers, honestly and with the receipts: how to improve processing speed brain training evidence, what actually works, what is marketing, and what a self-experimenter should do this week.

What the Australian study actually found

The paper, by Mehta and colleagues, used the Australian Diabetes, Obesity and Lifestyle (AusDiab) cohort: 4,561 adults with a median age of 60, followed for a median of 11.3 years, during which 566 deaths occurred. Participants completed clinical assessments of processing speed and memory alongside a global measure (the MMSE) and a test of premorbid verbal ability.

The fully adjusted Cox models returned a hierarchy that will surprise most people:

• Processing speed: 32% lower mortality per one-standard-deviation increase (HR 0.68, 95% CI 0.59 to 0.78).
• Memory: 20% lower mortality per SD (HR 0.80, 95% CI 0.71 to 0.91).
• Global cognitive function: 22% lower mortality per SD (HR 0.78).
• Premorbid verbal ability: no association (HR 0.92, CI crossing 1.0).

The authors adjusted for education, lifestyle and clinical factors, found the pattern similar in men and women, and noted it held in a cohort where 98% of participants had normal MMSE scores. Their conclusion, quoted: “Processing speed and memory were independently associated with mortality after covariate adjustment.”

Two things this study does not say. It does not say that being fast causes you to live longer; it says faster processing speed predicts lower mortality, and describes the scores as “indirect prognostic markers” rather than levers. And it does not name the specific tests it used in the abstract, so anyone quoting a test name for this particular finding is guessing.

What processing speed actually is

Processing speed is the pace at which your brain takes in a stimulus, works out what it means and produces a response. It is the bottleneck underneath almost everything else: reading comprehension, decision quality under time pressure, driving, even how quickly you notice you have misread something.

Clinically it is measured with timed tasks: how many symbol-digit pairings you can complete in 90 seconds, how quickly you connect numbered dots in sequence, how briefly a display can flash before you can no longer report what was in it. Researchers care about it because it declines with age earlier and faster than vocabulary or knowledge, and because it correlates with the efficiency of the brain’s white-matter connections.

For the self-experimenter, the operational definition matters more than the theory: processing speed is reaction plus accuracy under time pressure, and that combination is exactly what the training studies target.

Can you train it? The ACTIVE trial says something real

Most cognitive training research deserves the scepticism it gets. But there is one programme with genuinely unusual evidence, and it is about processing speed.

ACTIVE (Advanced Cognitive Training for Independent and Vital Elderly) was an NIH-funded trial of about 2,800 healthy older adults with an average entry age of about 74, run across six US sites. Participants were randomised to memory training, reasoning training, speed-of-processing training, or a no-contact control. The speed training was a computerised, adaptive programme based on the Useful Field of View (UFOV) test: participants identified a central image while simultaneously locating a peripheral object, with exposure times shrinking and distractions multiplying as they improved. Ten sessions of 60 to 75 minutes over five to six weeks, with a subset getting four-session boosters at 11 and 35 months.

This was not a memory game. It was visual attention and decision speed under shrinking time windows, titrated to keep each participant at about 75% accuracy. And the follow-up data, collected over a decade and more, is the strongest long-term evidence in the cognitive training literature.

Fewer crashes, longer driving independence

In a sample of 908 older drivers followed for up to six years with state-recorded collision data, speed-of-processing training was associated with a 43% lower rate of at-fault crashes per person-mile than control (rate ratio 0.57, 95% CI 0.34 to 0.96). Reasoning training also helped; memory training did not. (Ball et al., 2010, Journal of the American Geriatrics Society.)

On driving cessation, the other independence milestone, participants who completed speed-of-processing training were 40% less likely to stop driving over the next three years (Edwards et al., 2009). At ten years, in the subgroup with the poorest baseline processing speed, the training was associated with up to a 70% reduction in cessation among those who also took boosters (Ross et al., 2017).

The effect survived a decade, and the dementia data is striking

At the ten-year follow-up, reasoning and speed-of-processing training maintained their effects on the trained abilities (speed: effect size 0.66, 99% CI 0.43 to 0.88), while memory training effects had washed out. About 60% of trained participants, versus 50% of controls, were at or above their baseline level of everyday functioning. (Rebok et al., 2014.)

Then came the dementia analyses. Edwards et al. (2017) found speed-of-processing training associated with a 29% lower risk of dementia over ten years (HR 0.71, 95% CI 0.50 to 0.998, p = 0.049). Treat that p-value honestly: it sits right at the significance threshold, and dementia ascertainment was not uniform clinical diagnosis. But the 2026 follow-up, published this February, used Medicare claims for 2,021 participants over 1999 to 2019 and found boosted speed trainees had a 25% lower risk of diagnosed dementia (HR 0.75, 95% CI 0.59 to 0.95). Crucially, speed training without boosters showed no benefit at all (HR 1.01). Memory and reasoning training did not reduce dementia risk at either time point.

The pattern is specific, dose-dependent and replicated: speed-of-processing training, done to criterion with boosters, changes outcomes that matter. Nothing else in the cognitive training literature has this profile.

How to improve processing speed: what the evidence supports

So what does this mean for someone who wants a protocol rather than a literature review? Here is the evidence-based version of how to improve processing speed brain training can actually deliver.

1. Train the specific skill, adaptively, to criterion. The ACTIVE protocol is the template: computerised tasks that force faster visual identification under divided attention, with difficulty that adapts to hold you at the edge of your ability. Meta-analyses agree the effect is real and specific: Lampit et al. (2014, 52 RCTs) found computerised cognitive training improved processing speed with Hedges’ g of 0.31, a small-to-moderate effect, while executive function and attention did not move. Kelly et al. (2014, 31 RCTs) found processing speed improved versus active controls (p < 0.0001). The transfer is to processing speed itself and to the everyday tasks that lean on it, like driving. Expect that, nothing broader.

2. Plan boosters, not a one-off course. The ACTIVE results are blunt on this point: ten initial sessions bought a decade of retained speed ability, but the 20-year dementia benefit appeared only in participants who completed booster sessions. Whatever programme you use, schedule refresher blocks at roughly annual intervals and retest.

3. Add exercise, but know its size. Aerobic exercise does help processing speed, but modestly: Smith et al. (2010, 29 RCTs) found an effect of g = 0.158, and the benefit concentrated in combined interventions (aerobic plus something else, g = 0.250) rather than aerobic-only (g = 0.098, not significant). Exercise is worth doing for the brain, just do not expect it to do the heavy lifting here.

4. Be honest about brain games. Simons et al. (2016), reviewing the whole field for Psychological Science in the Public Interest, concluded there is “extensive evidence that brain-training interventions improve performance on the trained tasks… and little evidence that training enhances performance on distantly related tasks or that training improves everyday cognitive performance.” Most commercial brain apps make you better at the apps. The UFOV-style speed training in ACTIVE is the exception with the strongest evidence, and even it worked only with boosters over the long term.

5. Measure before and after. Track the same timed metric every four weeks: a simple online reaction-time test, a digit-symbol substitution task, or a UFOV-style measure. Without a baseline and a retest cadence, you are not self-experimenting, you are hoping.

The honest limits

Three caveats belong in every protocol, including this one.

First, the AusDiab finding is observational. Faster processing speed predicted survival; no study has randomised people to faster thinking and measured mortality. Treat processing speed as a marker worth improving, not a proven longevity lever.

Second, ACTIVE excluded people with significant cognitive impairment. The evidence applies to cognitively healthy adults protecting function, not to treating dementia.

Third, nothing here replaces the basics. Sleep deprivation, untreated hearing loss, depression and some medications all slow processing speed measurably. Chasing a training app while sleeping five hours a night is optimising the wrong variable.

The protocol, in brief

If you want the distilled version: baseline your processing speed with a timed test this week; complete a block of adaptive speed-of-processing training in the UFOV style, ten sessions over five to six weeks, difficulty titrated to the edge of your ability; schedule a four-session booster at around one year and repeat annually; keep up aerobic exercise combined with another modality; retest on the same metric every four weeks; fix sleep before anything else. That is what the evidence supports. Everything beyond it is marketing.

Frequently asked questions

How to improve processing speed brain training at any age?

Use adaptive speed-of-processing training in the UFOV style: computerised tasks that shrink display times while adding distractions, ten sessions over five to six weeks, with booster sessions at roughly annual intervals. The ACTIVE trial is the best-evidenced programme: about 2,800 participants, with speed-training effects maintained at ten years and a 25% lower dementia incidence at 20 years among those who completed boosters. Generic brain games improve the games themselves more than anything else.

Does faster processing speed cause a longer life?

No study has shown causation. The AusDiab study of 4,561 adults found each standard-deviation increase in processing speed linked to 32% lower mortality over 11.3 years after adjusting for education, lifestyle and health factors, but the authors describe the scores as prognostic markers, not interventions. Faster processing speed predicts survival; whether training it extends life is untested.

How long does speed-of-processing training take to work?

In the ACTIVE trial, the initial course was ten 60-to-75-minute sessions over five to six weeks. Training gains on the tested ability were measurable immediately, maintained at ten years, and associated with real-world outcomes (crashes, driving independence, dementia) over one to two decades, but the longest-term dementia benefit required booster sessions.

Are brain-training apps worth it for processing speed?

Mostly no, with one qualified exception. A 2016 review (Simons et al.) concluded brain-training programmes improve the trained tasks with little evidence of broader transfer. The exception is UFOV-based speed-of-processing training of the ACTIVE type, which has randomised evidence of durable, real-world effects. Look for adaptive difficulty and divided-attention demands, not memory matching games.

What is the UFOV test?

The Useful Field of View test, developed by Ball and Owsley in 1993, measures how much of the visual field a person can take in during a brief glance. The ACTIVE speed training was built on it: participants identified a central image while locating a peripheral object at ever-shorter exposure times, training visual processing speed, divided attention and selective attention simultaneously.

Can exercise alone improve processing speed?

Modestly. A meta-analysis of 29 randomised trials (Smith et al., 2010) found aerobic exercise improved attention and processing speed with a small effect (g = 0.158), and the effect was significant only for combined interventions, not aerobic exercise alone. Exercise belongs in the protocol, but it is not the main lever for processing speed.

Sources

1. Mehta K. et al. “Associations of domain-specific cognitive function with all-cause mortality over 11 years: the Australian Diabetes, Obesity and Lifestyle (AusDiab) study.” Archives of Gerontology and Geriatrics. 2026;151:106386. DOI: 10.1016/j.archger.2026.106386.
2. Coe N.B. et al. “Impact of cognitive training on claims-based diagnosed dementia over 20 years: evidence from the ACTIVE study.” Alzheimer’s and Dementia: Translational Research and Clinical Interventions. 2026;12(1):e70197. DOI: 10.1002/trc2.70197.
3. Edwards J.D. et al. “Speed of processing training results in lower risk of dementia.” Alzheimer’s and Dementia: Translational Research and Clinical Interventions. 2017;3(4):603-611. DOI: 10.1016/j.trci.2017.09.002.
4. Rebok G.W. et al. “Ten-year effects of the ACTIVE cognitive training trial on cognition and everyday functioning in older adults.” Journal of the American Geriatrics Society. 2014;62(1):16-24. DOI: 10.1111/jgs.12607.
5. Ball K. et al. “Cognitive training decreases motor vehicle collision involvement of older drivers.” Journal of the American Geriatrics Society. 2010;58(11):2107-2113. DOI: 10.1111/j.1532-5415.2010.03138.x.
6. Edwards J.D. et al. “Cognitive Speed of Processing Training Delays Driving Cessation.” Journals of Gerontology Series A. 2009;64(12):1262-1267. DOI: 10.1093/gerona/glp131.
7. Ross L.A. et al. “The impact of three cognitive training programs on driving cessation across 10 years: a randomized controlled trial.” The Gerontologist. 2017. DOI: 10.1093/geront/gnw143.
8. Lampit A. et al. “Computerized Cognitive Training in Cognitively Healthy Older Adults.” PLOS Medicine. 2014;11(11):e1001756. DOI: 10.1371/journal.pmed.1001756.
9. Kelly M.E. et al. “The impact of cognitive training and mental stimulation on cognitive and everyday functioning of healthy older adults.” Ageing Research Reviews. 2014;15:28-43. DOI: 10.1016/j.arr.2014.02.004.
10. Smith P.J. et al. “Aerobic exercise and neurocognitive performance: a meta-analytic review of randomized controlled trials.” Psychosomatic Medicine. 2010;72(3):239-252. DOI: 10.1097/PSY.0b013e3181d14633.
11. Simons D.J. et al. “Do ‘Brain-Training’ Programs Work?” Psychological Science in the Public Interest. 2016;17(3):103-186. DOI: 10.1177/1529100616661983.

Related reading

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Disclaimer: This article is for information only and is not medical advice. If you have concerns about your cognitive health, speak to a qualified clinician.