Memory exercise · ~2 min a run · free
Running Memory Span
Recall the last few digits of a stream.
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Running memory span tests the constant updating of working memory. A stream of digits plays at a steady pace, and you never know when it will stop; when it does, type back the last few in order.
About this test
About this test
What this test measures
This measures working memory updating and recall: keeping a moving window of recent items as new ones keep coming. The challenge is letting go of old information at the right moment without losing the current set.
How to improve your score
- Refresh the window each step, drop the oldest item as the newest arrives.
- Do not try to hold the whole list, only the most recent run actually matters.
- Practise with longer streams so the updating becomes automatic.
Good to know
Good to know
Drop one, add one
As each new digit arrives, shift your mental window forward: drop the oldest item, add the newest, and subvocalise the updated set straight away. Trying to hold the full stream from the beginning is the wrong approach. Only the last two, three or four items matter, and keeping that window fresh on every beat is the whole skill.Updating in the cockpit
The exercise starts at a recall span of three and extends by one digit per level. Reaching a span of five or more reliably is a strong target. The skill transfers directly: every time a controller revises an altitude or a heading partway through a transmission, you must drop the old value and slot in the new one without losing the rest of the message.
Frequently asked questions
How is this different from number memory?
How is this different from number memory?
Number memory shows a fixed-length number to memorise. Running span never tells you the length, so you must continuously update the last few items as new ones arrive.
Why does it matter for pilots?
Why does it matter for pilots?
The flight deck constantly updates the latest altitude, heading and frequency. Holding the most recent values while older ones fall away is exactly this skill.
Any tips?
Any tips?
Silently rehearse a rolling window: as each new digit lands, drop the oldest and add the newest.
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