Atención Sostenida

The Sustained Attention to Response Task (SART) is a long vigilance paradigm.

Most trials are "go" (any digit except 3) so the motor response becomes automatic. The rare "no-go" (3) tests your ability to interrupt an established rhythm.

Errors tend to cluster late in the session as attention drifts — this is the hallmark of vigilance decrement.

Practice in 3-5 minute sessions improves your ability to sustain focus.

Each test is constructed using Item Response Theory (IRT) and Classical Test Theory (CTT) to ensure reliable measurement of knowledge and ability across different difficulty levels.

Questions undergo rigorous review including difficulty calibration, discrimination analysis, and distractor effectiveness evaluation to maintain high assessment quality.

1. Tap or press Space for every digit.
2. EXCEPT when you see the digit 3 (shown in red).
3. Keep a steady pace — don't rush, don't drift.
4. Late-session errors are the interesting ones.