Altamens Research
Evidence reviews on the ageing mind
Plain-language, carefully sourced reviews of what the research actually shows about cognition, training and brain health — with every claim labelled by evidence type and every source cited.
Same Accuracy, Different Certainty: Why Trial Count Matters
An 80% result can mean 8 correct answers out of 10 or 80 out of 100. The percentage is identical; the statistical precision is not.
Faster Is Not Always Better: Reading Speed and Accuracy Together
A practical guide to interpreting timed mental-task scores when quicker responses can come with more errors.
Why Personal Bests Rise Even When Performance Is Stable
A record is the most favourable observation so far. This simulation separates that selection effect from practice, learning and genuine change.
Before You Compare Reaction-Time Scores: A Measurement Checklist
A browser records a chain of events. A useful comparison starts by checking the task, device, response event and score summary.
How Stable Is Your Digit Span?
A 1,433-person test of scoring rules and immediate repeatability: the simplest all-trial score was the most repeatable, and our prespecified partial-credit score was the least — the opposite of what we predicted.
How Much Can the Question Mix Change a 30-Second Mental-Math Score?
The questions matter: in a protocol-guided reanalysis of an independent public arithmetic dataset, balancing item difficulty cut simulated 30-second score variance by about 10–13% — but meaningful score variation remained.
What Actually Supports Cognitive Health as We Age?
An evidence map of medical risk management, movement, hearing, social connection and cognitive training — plus what brain games can and cannot claim.