Eriksen Flanker Task
Follow the middle arrow and explore selective attention and interference control in this session. This is an original browser implementation without population norms or diagnostic validation.
- About 3 minutes
- Physical keyboard
- Practice included
- No sign-up
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
Eriksen Flanker Task · Performance and data quality are shown separately.
Understand the task
How this online Flanker task works
The task asks you to follow a central arrow while ignoring surrounding arrows that may point the same way or conflict with it.
What this task samples
It samples selective attention and interference control while you respond to one central target.
What appears in your result
Your report describes accuracy and usable response times for matching and conflicting arrows, including their mean difference.
Method and quality checks
8 practice rounds, then 80 scored rounds. Practice is not scored. Responses under 150 ms are marked early. Early and timing-affected trials are excluded from accuracy/rate denominators and response-time summaries. Counts refer only to usable trials unless marked otherwise.
FixMind’s original implementation of a published experimental paradigm. Our code, instructions and geometric stimuli are original. This is not the NIH Toolbox, TOVA, or another commercial test, and it does not use their norms.
Before you begin
Use a computer and a physical keyboard in a quiet setting. Close distractions and keep this tab in view. Sleep, fatigue, stress and device timing can affect your experience.
Privacy and data
Your answers and results stay in this page and are not uploaded or saved automatically. Leaving or refreshing clears your progress. This site uses Cloudflare Web Analytics for basic traffic and performance measurements; assessment answers and scores are not included.
Research and implementation
FixMind built this browser task from the published paradigm. The code, instructions, quality rules, and report are our own and have not been clinically validated.