Entrenamiento N-Back

N-back is the most studied working memory training task in cognitive science.

In N-back, you see a sequence of stimuli one at a time. For each item, decide whether it matches the one N steps back. At 1-back you compare each item to the previous; at 3-back you juggle three in mind.

The task directly loads the phonological and visuospatial buffers while demanding constant updating.

We score hits minus false alarms — guessing does not raise your score. Your history is saved locally.

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 3×3 grid. A square lights up every few seconds.
2. For each new position, ask: did this match the position N steps ago?
3. If it matches, press Match (or the Space key). Otherwise do nothing.
4. Accuracy matters more than speed.