Key evidence & numbers
| Measure | Result | Scope |
|---|---|---|
| Age slope | 0.55 ms per year | Simple visual reaction time in this study. |
| Ages studied | 18–65 | Do not extend the slope to childhood or later old age. |
| Analyzed sample | 1,469 | Community volunteers in Rotorua, New Zealand. |
Source: Woods and colleagues. This does not provide age-specific Helibrain norms.
What affects it?
Equipment, signal timing and task design affect comparisons too. Study
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Common questions
Can I calculate my expected score from my age?
The reported slope alone is not an age norm or a personal prediction. We do not turn it into a score calculator.
Will everyone slow at the same rate?
This cross-sectional study cannot establish individual rates.
Can I compare a phone result with a computer result?
Different input and display delays complicate that comparison. Keep the setup consistent for your own tracking.
Sources
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