What you do in Brain Age Check
A short timed mix: quick sums on the keypad, handwritten answers, a decimal, tapping five numbers in order, picking every number in a grid that divides by a given number, and naming a shape. On a computer it is a 14-question keypad version (handwriting is optional there). Each wrong answer adds 5 seconds to your time, and your total time gives a playful speed tier, from Turtle to Rocket.
- It takes a few minutes, and each go counts as one workout.
- Your result comes with a tip on the kind of question that slowed you down most.
- It is a game, just for fun: the tier, and the number that comes with it, are not your age.
Try it: 10 seconds
No pressure. Just see how it feels.
36 ÷ 4 = ?
Show the answer
9
Turn on JavaScript to play this one against the clock.
Doc explains
Brains don't come with one age stamped on them! Speed, memory and vocabulary all shine at different times of life, and vocabulary keeps growing for decades. So my Rocket and Turtle tiers are pure fun: a race against your own clock. And if you're quicker after a few goes, that's partly just practice at this game, just as the research on retaking tests would expect!
The science idea
Processing speed: how quickly you can take in simple information and respond to it.
Speed changes a lot as children grow up: children's and teenagers' response times are reliably slower than adults', with the gap closing quickly through childhood and more slowly through the teenage years.1
Speed is only one part of thinking, too. A large study found that different abilities are at their best at very different ages, so there is no single age for a brain.2
What the research found
Combining 72 studies, children's and teenagers' response times were reliably slower than adults', and the gap shrinks quickly through childhood and more slowly in adolescence.1
A study that combined standard test norms with 48,537 online participants found that abilities reach their best at different ages. In the test norms, a speed task did so in the late teens, short-term memory for digits in the early twenties and vocabulary around 50, and tasks built on knowledge, including an arithmetic test, later than nearly every other task. In the online data the same order held, with the working memory tasks at their best around 30.2
A meta-analysis of 122 studies found that people score higher simply from taking the same kind of test again, with gains up to the third attempt and none after that.3
How Brain Age Check uses it
- Brain Age Check times a quick mix of question types, so the result is about your speed on this game, the kind of thing processing speed research looks at.1
- The result is a playful speed tier, from Rocket to Turtle, not a measure: the game has no norms by age and has not been checked for reliability or validity.
- Each wrong answer adds 5 seconds, so rushing does not pay.
- The tip after your result points to the question type that slowed you most, with a button that jumps straight into a workout for it.
What this does and doesn’t mean
It does mean
- It is a fun way to race your own clock across a mix of quick questions.
- Getting quicker over your first few goes is normal: taking the same kind of test again raises scores on its own.3
It doesn’t mean
- It is not a measure of your age or of your brain. There is no single brain age, and the game has no age norms.2
- A slow tier is not a sign of anything: children are slower than adults on speed tasks as a normal part of growing up, so a quick-thinking 8 year old can land on Turtle.1
- A better result after a few days can simply mean you are getting used to this game.3
- The studies below tested their own tasks with their own volunteers. They did not test Math Workout.
References
Written in APA 7 style. Tap a number in the text to jump here, and the arrow to jump back.
- 1
Kail, R. (1991). Developmental change in speed of processing during childhood and adolescence. Psychological Bulletin, 109(3), 490-501. https://doi.org/10.1037/0033-2909.109.3.490
- 2
Hartshorne, J. K., & Germine, L. T. (2015). When does cognitive functioning peak? The asynchronous rise and fall of different cognitive abilities across the life span. Psychological Science, 26(4), 433-443. https://doi.org/10.1177/0956797614567339 Free to read
- 3
Scharfen, J., Peters, J. M., & Holling, H. (2018). Retest effects in cognitive ability tests: A meta-analysis. Intelligence, 67, 44-66. https://doi.org/10.1016/j.intell.2018.01.003
Science last checked: 2026-11-05
