What does this attention test measure?

It emphasizes selective attention and sustained focus.

How many rounds are included?

This version runs 12 rounds per session.

Each round shows multiple letters. Select the requested target letter.

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Target: -

Score: 0/0

Press start to begin.

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Final score reflects correct selections across 12 rounds.

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Can I improve my score?

Yes, practice can improve speed and visual filtering.

Is this a medical result?

No, this is an educational attention exercise.