Measure your focus
The Trail Making Test turns a classic neuropsychological task into a quick, gamified sprint. Connect targets in order, beat the clock, and stack personal bests -- free to practice in your browser.
What you'll measure
One short challenge, four cognitive dimensions -- built for people who like timers, streaks, and measurable improvement.
Processing Speed
Race the clock as you connect targets in order -- raw speed matters, and every run is a new chance to sharpen it.
Mental Flexibility
Switch rules on demand when you level up from numbers-only to alternating letters and numbers.
Executive Function
Plan the path, inhibit wrong taps, and keep the sequence straight while pressure builds.
Sustained Attention
Stay locked in from the first node to the last -- focus is the skill you are leveling up.
Two test modes
Warm up with a straight sequence, then flip the rules for the real gear-switching workout.
TMT-A -- Numbers only
Connect numbered nodes in ascending order as quickly and accurately as you can. It is the pure speed run: minimal rule switching, maximum flow.
TMT-B -- Numbers & letters
Alternate between letters and numbers (1 → A → 2 → B …). This is where executive control shows up: every step forces a mental context switch under the timer.
How it works
Pick your mode
Open the Trail Making screen and choose Part A (numbers only) or Part B (numbers + letters). No signup required.
Connect under pressure
Tap nodes in the correct order as fast as you can. The timer is running and mistakes cost time.
Review and repeat
See your completion time and error count, then run it again to chip away at your personal best.
Frequently asked
Everything you need to know before taking the test.
Ready to test your attention?
Hit the trail, race the clock, and log another rep toward sharper focus -- free to practice, personal bests saved locally.