How is this different from Number Memory?

Number Memory shows digits one at a time; here the whole number flashes at once for one second, testing a slightly different encoding.

The brief exposure prevents sub-vocal rehearsal from inflating span, isolating transient encoding.

A span of 6 is around the typical range; 8 is exceptional per our estimated norms.

Transient Number Memory

How long a number can you grasp in one second?

~4 min

For information and self-reflection

This assessment is not a medical or psychological diagnosis and not a clinical screening tool. It cannot determine whether you have a medical or mental-health condition. If you are concerned about your health, please seek advice from an appropriately qualified healthcare professional.

~4 min

What this measures

Transient Number Memory measures how many digits you can hold and reproduce after a one-second flash. It's a research-grounded short-term memory span task.

How it works

A number flashes on screen for one second, then disappears. Type it exactly. The length grows when you're right and shrinks when you're wrong. Two misses in a row end the test.

How results are calculated

Your primary score is the maximum span you reproduced correctly (higher is better), estimated against population norms.

Accuracy & limitations

Attention and input method affect results. This is a research-grounded task (Evidence C), not a clinical evaluation.

FAQ

Keep exploring

Sequence Memory~4 min Pattern Memory~5 min Number Memory~5 min

Last reviewed: 2026-08-14