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Test for Number Memory

How long you fit remember number? E go show small, then you type am back, with one extra digit each time. Na few minutes, free, and no sign-up.

Na Helibrain team write amRobert(English), PhD student for biophysics, don review amDem publish am Dem last review am

Wetin this test dey measure

E dey measure your digit span: the longest line of digits wey you fit repeat back just after you see am. Digit span na one of the tests wey dem dey use pass to check short-term memory, the small place wey dey hold information for some seconds as you dey use am 1.

For clinic, dem dey usually read the digits loud, one every second. For here, all of dem go show for screen together for 1 seconds plus 0.6 seconds for each digit, so your score no be the same as score for clinic digit span test.

How the test dey work

  • The first number get 3 digits. Type am back and each correct answer go add one digit.
  • You get 2 tries for each length. When you miss every try for one length, the test go end.
  • Your score na the longest number wey you type back exactly correct.

Why e dey help to group digits

For one well-known paper, George Miller point out say the limit of short-term memory depend on how many groups of information you hold, no be how many digits, and people fit stretch am by putting things together into bigger groups 2. To read 4-9-1-7 as "forty-nine, seventeen" na one way to group am. You fit use am, but use the same way every time so your scores fit compare well.

Wetin fit change your score?

For one computer study of 763 adults wey age from 18 to 65, forward digit span (to repeat digits for the same order wey you hear am, as this page dey do) no change as age dey increase. Na only backward span, to repeat dem for reverse order, drop small as age dey increase. People wey get more years of education score small higher 1. Practice with the task, tiredness and distraction fit change am from one day to another too. One try na just one-time picture; several tries for different days go tell you more.

Other short-term memory tests for this site: test for sequence memory (the order of places for grid) and N-back test(English) (to hold things for mind as dem dey change).

See all di 43 free tests wey check brain

You wan work on dis every day? Di Helibrain app (for English for now) get free plan and plans wey you pay for.

Cite dis page: Test for Number Memory. Helibrain. 2026. https://helibrain.com/pcm/number-memory-test. CC BY 4.0.

Common questions

How this test works

This test measures your digit span: how many digits you can hold in mind for a few seconds. A number appears on screen, then disappears. Type it back. The first number has 3 digits, and each right answer adds one digit. You get two tries at each length, and two misses at the same length end the test. Your score is the longest number you typed back exactly right. Psychologists have measured digit span since 1887.

Version 1 · Cite this test:

Helibrain (2026). Number memory test, v1. https://helibrain.com/number-memory-test/methods

Full method →

Sources

  1. Woods DL, Kishiyama MM, Yund EW, Herron TJ, Edwards B, Poliva O, Hink RF, Reed B (2011). How to improve digit span assessment of short-term verbal memory. Journal of Clinical and Experimental Neuropsychology 33(1):101–111.
  2. Miller GA (1956). The magic number seven, plus or minus two: some limits to how much information we fit process. Psychological Review 63(2):81–97.

How we take make dis page: di Helibrain team write am from di studies wey dem list above, and Robert(English) (PhD student for biophysics) review am on 3 Nọvẹ́mba 2026. We dey update am wen di sources change.