Guides

Original, data-backed explainers on what your scores mean and how to improve them.

Average Reaction Time by Age

How reaction time changes across your life, and where you stand for your age.

How to Improve Your Reaction Time for Gaming

What actually works, what doesn’t, and how much you can realistically shave off.

What Is a Good Typing Speed (WPM)?

Average, good, and fast WPM — plus how accuracy changes the picture.

Digit Span: How Many Numbers Can Humans Remember?

Miller’s 7±2, why it holds up, and how to push past it.

Chimp Test Explained: Can You Beat a Chimpanzee’s Memory?

The real research behind Ayumu the chimp and what it says about human memory.

Aim Trainer: Does It Actually Improve Your Aim?

What the motor-learning research says about drilling targets.