Brain exercise
Why Attention Will Not Narrow Cleanly
Judge the middle arrow. Ignore the ones beside it. You will find you cannot quite.
The arrows either side are irrelevant and you know it. Sixteen trials.
This is a demonstration of an effect, not the clinical task it resembles. It uses different stimuli, has no normed scoring and no cut-offs, and no result here is interpreted. Clinical versions of tasks like this are administered under controlled conditions for good reasons.
What just happened
Attention is a gradient, not a spotlight
- You processed them anywayThe flanking arrows were identified before you could exclude them. Attention is not a shutter that closes cleanly around a target.
- Agreement helped, disagreement costWhen the neighbors pointed the same way you were faster. When they disagreed you were slower, because two answers arrived and one had to be rejected.
- The size of that gap is the effectThe difference between agreeing and disagreeing trials is what this demonstrates. It shows up in almost everyone.
The spotlight metaphor is convenient and wrong. Attention falls off gradually, so things near what you are attending to get partially processed whether they are useful or not.
That is why a cluttered screen is tiring, and why open-plan offices cost more concentration than people expect.
A quick note. Being slowed by the disagreeing trials is the normal, expected result. It is the finding, not a failing.
Science vs hype
What this does not mean
What you may have seen. Arrow tasks presented as focus tests, attention scores, or as measuring how easily distracted you are.
What this activity actually involves. An attentional interference demonstration using arrows. It reports a count and elapsed time and nothing else.
Where the evidence stops. Interference effects are real and well replicated, but a browser cannot control timing, viewing distance or attention, and there are no norms behind this version. Sixteen trials say nothing about your attention, your distractibility or any condition, and this is not a screening tool.
Who Can Use This One
- Vision is required. The arrows are large and high contrast.
- No time limit per trial.
- Keyboard operable, every choice is a real button.
- Nothing is recorded. No account, no score stored, nothing sent anywhere.
Why Concentrating Is Tiring
You just measured, in your own experience, that ignoring something costs effort. That is not obvious until you feel it directly.
People describing burnout or brain fog are often describing exactly this: not an inability to attend, but the accumulated cost of filtering, all day, in an environment that keeps supplying things to filter. Whether that is the situation, or whether something else is going on, is worth finding out properly.
If you would rather read first, our conditions page sets out what neurofeedback is used for and how strong the evidence is for each, and our research page covers what the studies actually found, including the ones that came out negative.
A free conversation with a psychologist. No intake form, no obligation, and we will tell you plainly when the answer is that you do not need us.
These activities are demonstrations of how perception, attention, memory and movement work. They are not tests, screenings or diagnostic tools, and no result here says anything about whether you have a medical or psychological condition. Nothing on this page is medical advice or a substitute for evaluation by a qualified professional. Last reviewed September 2026.