Attentional Blink

Attentional Blink (Raymond, Shapiro, & Arnell, 1992) demonstrates a temporary "blindness" after detecting a first target — for ~200–500ms, your attention can't see a second one.

Targets appear in a rapid stream of distractors at ~10 items per second. The 2nd target falls in the blink window most of the time.

Training narrows the blink window. Mindfulness training and high arousal both reduce the effect.

It's a robust marker of temporal attention dynamics.

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. Watch the center of the screen — letters will flash extremely fast.
2. Among the letters, 1 or 2 digits will appear.
3. After the stream ends, type the digits you saw (in any order).
4. Don't blink during the stream. Soft, central gaze.