Focus Test
Five arrows appear, like <<><<. Only the CENTER arrow matters — press its direction, fast. Half the trials point together; half fight you. The gap between those two speeds is your interference cost: how much noise costs you.
Start the test — free, no signup
What's a good score?
< 30 ms interference — Elite filtering — noise barely touches you.
30–60 ms — Strong selective attention.
60–100 ms — Typical adult range.
> 100 ms — Distraction is expensive right now — common under stress or fatigue.
What this test measures
This is the Eriksen flanker task, one of the most-used selective-attention instruments in cognitive science. It measures your ability to respond to a target while actively suppressing surrounding distractors — attention as a filter, not a spotlight.
Notably, selective attention shows one of the largest sleep-deprivation effects in the literature — and in game terms, it’s clicking the right target in a fight where four wrong ones are flashing.
Questions players ask
What is a focus test?
A task measuring selective attention: responding to a target while ignoring built-in distraction. The flanker paradigm used here has decades of research behind it.
Why am I slower when the arrows disagree?
The flanking arrows trigger a competing response your brain must suppress — that suppression takes measurable time, called the interference or congruency cost.
Does tiredness affect focus?
Strongly. Selective attention degrades sharply with sleep loss and stress, which is why focus-style tasks appear in daily readiness monitoring.
The daily version
This test is one slot of our free 3-minute daily readiness check — five weighted measurements scored against your own baseline, with an honest verdict before you queue. Run today's check.