Flanker interference task
About 3 minutes · Physical keyboard
Look only at the middle arrow. Press the left arrow key for ← and the right arrow key for →. Ignore the surrounding arrows. Give equal importance to speed and accuracy.
8 practice rounds, then 80 scored rounds. Practice is not scored.
A physical keyboard is required for this version. The questionnaire works on touchscreens; these two tasks are currently designed for computer keyboards.
Practice round
Follow the middle arrow with ← or →.
Practice complete
This round was stopped.
The page lost focus, became hidden, or the round was stopped. We have discarded this round so an interruption is not counted as an attention lapse. Start again when you are ready.
Your results
Flanker interference task
About this assessment
A keyboard task that explores how surrounding distractions affect your responses.
Our own browser implementation, without population norms or diagnostic validation. For self-understanding, not diagnosis.