Working Memory

Digit Span

Numbers appear one at a time. When they stop, type them back. The sequence grows longer each round until it slips — that point is your span.

Direction Recall the digits in the same order

Forward Backward

Starting length How many digits in the first round

− 3 +

Pace Time each digit stays on screen Slow Standard Fast

Press Start when you're ready. Watch the panel and keep the digits in mind.

Start Reset

This is an informal exercise for practice and curiosity, not a clinical or diagnostic assessment. Results vary with attention, fatigue, and environment.