Research & Educational Resources
Educational summaries of cognitive training research for informational purposes only.
Educational Disclaimer
The research summaries below are provided for educational purposes only. They describe independent scientific studies conducted by researchers not affiliated with BrighterBrains™.
BrighterBrains™ does not claim that our app replicates the conditions, protocols, or outcomes of these studies. The studies cited involved specific interventions, populations, and methodologies that differ from our platform.
Important: These summaries do not constitute medical advice. Individual results vary. BrighterBrains™ is a wellness and educational tool and is not intended to diagnose, treat, cure, or prevent any medical condition.
Always consult a qualified healthcare professional for medical advice, diagnosis, or treatment.
Coe et al., Alzheimer's & Dementia: Translational Research & Clinical Interventions (2026)
Study Design: This study linked data from the ACTIVE randomized controlled trial (N = 2,021 participants enrolled in traditional Medicare) to Medicare claims records spanning 20 years (1999–2019). It examined the long-term effect of cognitive training on claims-based diagnosed Alzheimer's disease and related dementias (ADRD) using the Chronic Conditions Warehouse (CCW) algorithm.
Key Finding: Participants randomized to the speed-of-processing training arm who completed one or more booster sessions had a significantly lower risk of diagnosed ADRD over 20 years (adjusted HR: 0.75, 95% CI: 0.59–0.95). Speed-trained participants who received no booster sessions did not show a significantly lower risk (HR: 1.01). No significant effect was found for memory or reasoning training on ADRD risk.
Why Booster Sessions Mattered: Booster sessions held at 11 and 35 months after baseline appeared to reinforce and adapt to improving abilities, potentially strengthening neuroplastic effects. This supports the hypothesis that adaptive, repeated cognitive training may be more effective than a single training period.
Important Limitations: This is the first analysis from ACTIVE using Medicare claims data; results require independent replication. The study sample represented ~73% of original ACTIVE participants (those in Medicare Advantage were excluded). Post-randomization selection bias cannot be fully ruled out. The specific speed-training protocol (adaptive, computer-based, dual-attention tasks) is not equivalent to consumer brain-training apps. Dementia diagnosis was based on administrative claims, not clinical adjudication.
DOI: 10.1002/trc2.70197 — Open access under Creative Commons Attribution-NonCommercial-NoDerivs License.
Rebok et al., Journal of the American Medical Association (2014)
Study Design: Randomized controlled trial with 2,832 adults aged 65+ receiving 10 sessions of memory, reasoning, or processing-speed training.
Key Finding: Participants showed improvement on trained cognitive tasks at 10-year follow-up.
Important Limitations: Improvements were specific to trained tasks and did not consistently transfer to untrained cognitive abilities or daily functioning. The study involved in-person, clinician-led training protocols not replicated in commercial apps.
Edwards et al., Alzheimer's & Dementia: Translational Research & Clinical Interventions (2017)
Study Design: Secondary analysis of ACTIVE trial data examining dementia incidence in participants who received speed-of-processing training.
Key Finding: Participants in the speed-training group showed lower dementia incidence at 10 years compared to control group.
Important Limitations: This was an exploratory secondary analysis, not a primary outcome. Results require replication. The specific training protocol used is not equivalent to consumer brain training apps. Dementia was not the original primary endpoint.
Owen et al., Nature (2010)
Study Design: Large online study (11,430 participants) testing whether commercial-style cognitive training transfers to untrained cognitive tasks.
Key Finding: Training improved performance on practiced tasks but did not transfer to general cognitive abilities or untrained tasks.
Interpretation: This study highlights the task-specific nature of cognitive training gains and the limited evidence for broad cognitive transfer from game-like interventions.
Hill et al., Journal of the American Geriatrics Society (2017)
Study Design: Systematic review and meta-analysis of cognitive training studies in individuals with MCI or dementia.
Key Finding: Some evidence for small improvements in cognitive outcomes for people with MCI; mixed evidence for dementia populations.
Important Limitations: Effect sizes were small, study quality varied, and training protocols differed widely. Clinical significance of improvements remains uncertain. Most studies used supervised, in-person training.
Woods et al., Cochrane Database of Systematic Reviews (2012)
Study Design: Systematic review of cognitive stimulation interventions for people with dementia.
Key Finding: Cognitive stimulation therapy (CST) showed some benefits on cognition and quality of life in people with mild to moderate dementia.
Important Limitations: CST involves structured, therapist-led group sessions with social interaction. It is not equivalent to app-based cognitive training. Studies were short-term with modest effect sizes.
Ngandu et al., The Lancet (2015)
Study Design: Randomized controlled trial testing a multidomain intervention (diet, exercise, cognitive training, vascular risk management) in older adults at risk for cognitive decline.
Key Finding: The combined intervention improved or maintained cognitive performance compared to control group.
Important Limitations: FINGER was a comprehensive lifestyle intervention requiring medical oversight, in-person sessions, and vascular risk management. Cognitive training alone was not tested. Results cannot be attributed to any single component or to app-based training.
About This Page:
This page provides educational summaries of independent research studies. BrighterBrains™ is not affiliated with these studies and does not claim to replicate their protocols, populations, or results.
The presence of research summaries on this page does not constitute an endorsement of BrighterBrains™ by the study authors or institutions. These summaries are provided solely for educational purposes.
Consult a qualified healthcare professional for medical advice, diagnosis, or treatment. BrighterBrains™ is a wellness and educational platform, not a medical device or therapeutic intervention.