Reaction Time Norms
Reaction Time Norms by Age — Percentiles & Sources
Estimated reaction time by age: modelled percentiles, the research behind them and the limits of comparing online tests.
What's a normal reaction time?
These are estimated reference values for a simple visual reaction task. The model uses a 271 ms median for adults under 50, including a fixed allowance for web/input latency. Your device is not individually calibrated.
Model anchor: 231 ms from Woods 2015 plus a site-selected 40 ms web/input allowance gives 271 ms. The approximate agreement with Human Benchmark’s web-click median is a plausibility check, not independent validation of this model.
Reaction time distribution by age
Each cell is an estimated cutoff in our normal-distribution model, not a measured rank among Moodji users. Lower milliseconds means faster responses.
| Age | Faster than 90% | Faster than 75% | Median (50%) | Faster than 25% | Faster than 10% |
|---|---|---|---|---|---|
| Under 50 | 220ms | 244ms | 271ms | 298ms | 322ms |
| 50–64 | 260ms | 284ms | 311ms | 338ms | 362ms |
| 65+ | 310ms | 334ms | 361ms | 388ms | 412ms |
Method & sources
We only use studies that measured the same task — a finger/screen tap in response to a visual signal — and disclose the web/touch calibration. Percentiles are modelled from a normal distribution around the age-band median; because reaction time is mildly right-skewed, the extreme tails are approximate. This is a reference for self-comparison, not a clinical norm.
- Woods DL et al. (2015). Factors influencing the latency of simple reaction time. Front. Hum. Neurosci.年轻成人按键反应时均值 231ms、组间 SD、随龄斜率 +0.55ms/年;硬件延迟最多虚高 100ms
- Der G, Deary IJ. (2006). Age and sex differences in reaction time in adulthood: UK Health and Lifestyle Survey. Psychology and Aging.人群年龄斜率(50 岁前持平、之后加速),n≈7,130
- Human Benchmark — aggregate reaction time statistics (web click).web/触屏中位数 ~273ms,用于校准偏移的交叉验证锚点
Talk through your results with AI
Want to go deeper than a score? Copy the prompt below into ChatGPT, Claude or another AI assistant to reflect on your results, ask follow-up questions and get practical next steps. AI can be a helpful thinking partner for self-reflection — but it is not a therapist. Please read the note below.
I just completed the Reaction Time Norms by Age — Percentiles & Sources, a self-assessment questionnaire. I'd like to reflect on what my results might mean. Please act as a supportive, evidence-based wellbeing coach: first ask me 2–3 clarifying questions, then explain in plain language what my results could indicate, and suggest small, realistic steps I could try over the next two weeks. Be honest about the limits of a self-test, and tell me when it would be wise to talk to a qualified professional.
AI assistants can make mistakes and are not a substitute for professional diagnosis or care. If you are in crisis or thinking about harming yourself, please contact your local emergency services or a crisis hotline right away.
About this tool
What is Reaction Time Norms?
A model-based reference for simple visual reaction time by age, using published research and disclosed assumptions for web/input latency.
What is it for?
Compare your reaction time with an approximate age reference; this is not a measured user ranking.
How to read your result
Lower milliseconds means a faster response. The percentile is an estimate from a normal-distribution model; use the same device and input method when comparing your sessions.
These norms are a reference for self-comparison, not a clinical standard. Web/touch tests include device and screen latency, so treat the numbers as approximate and relative.
Classification & Reference
| Age | Median reaction time |
|---|---|
| Under 50 | 271ms |
| 50–64 | 311ms |
| 65+ | 361ms |
Frequently asked questions
What is the average reaction time by age?
The model medians are 271 ms under 50, 311 ms at 50–64 and 361 ms at 65+. These are site estimates, based on a 231 ms laboratory anchor, a fixed 40 ms web/input allowance and age offsets of 0, 40 and 90 ms. They are not measured averages for all online users.
What is a good reaction time?
There is no universal good/bad cutoff across devices. The model estimates a 90th-percentile threshold near 220 ms under 50, but actual rankings depend on the population, device and input method. Compare several sessions under similar conditions.
Why is my online reaction time slower than lab studies?
Lab studies use calibrated button boxes and correct for hardware; controlled measurements land near 213–231ms for young adults (Woods 2015). Web and touch tests add display and input latency — often 40ms or more — which is why crowd medians like Human Benchmark's ~273ms are slower. Our norms are calibrated to those web/touch conditions.
How are these reaction time percentiles calculated?
We use a normal distribution with a young-adult center of 231 + 40 = 271 ms, a site-selected standard deviation of 40 ms, and age offsets of 0, 40 or 90 ms. The +40 ms allowance and standard deviation are modelling choices, not individual device calibrations or Moodji user measurements. Agreement with Human Benchmark’s approximate web-click median is only a plausibility check.
Can I use ChatGPT or Claude to understand my results?
Yes. AI assistants like ChatGPT and Claude can be a useful way to reflect on what your results mean and explore next steps, and this tool gives you a ready-made prompt plus a one-click link to start that conversation. Keep in mind that AI is not a licensed professional and cannot diagnose you — for a formal assessment, or if you are struggling, please consult a qualified health professional.
References & review
- Woods DL et al. (2015). Factors influencing the latency of simple reaction time. Frontiers in Human Neuroscience.
- Der G, Deary IJ. (2006). Age and sex differences in reaction time in adulthood: UK Health and Lifestyle Survey. Psychology and Aging.
- Human Benchmark — aggregate reaction time statistics (web click).