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Chimp Test

Numbers kythe on a grid. Tap 1, an the lave turn intae blank squares: tap them in order frae memory. The task in a weel-kent chimpanzee study. Free, nae sign-up.

Bi the Helibrain teamChecked bi Robert(Inglis), PhD candidate in biophysicsPit oot Last checked

Whaur the chimp test comes frae

In 2007, researchers at Kyoto University trained chimpanzees tae touch numerals on a screen in order. In ae version, the meenit the chimp touched the first numeral, aw the ithers turnt intae plain white squares, sae the lave haed tae be duin frae memory 1. In a harder version, five numerals were shown for juist a wee bittie o a second afore turnin blank. A young chimpanzee cried Ayumu got maist o thir richt, an nane o the humans testit cam near him 1 2.

The story has anither pairt. Anither team pintit oot that Ayumu haed haed a wheen o practice an the humans haed nane. Whan twa fowk practised the same task, their accuracy matched his 2. Sae the task shawes hoo muckle practice matters, as muckle as onything aboot chimps.

Fit this test measures

It measures short-term memory for whaur things are an in fit order: ye tak in the places o several numbers at ae time, than mind them back withoot seein them. Unlike the study, thare is nae time limit afore yer first tap, an the nummer o squares keeps growin sae lang as ye get rounds richt.

Hoo the test warks

  • The first round has 4 numbers. Luik as lang as ye like, than tap 1.
  • The ither numbers turn intae blank squares. Tap them in order: 2, 3, 4 an sae on.
  • A clean round adds ae nummer. A wrang tap uises up a try, an the round sterts again wi new spots. 3 wrang taps ends the test.
  • Yer score is the maist numbers ye got richt in ae round.

Hoo tae read yer score

Acause practice made sic a difference in the research 2, expeck yer score tae rise ower yer first runs. Maistly, that rise is ye learnin the task. Ance it settles, yer runs tell mair aboot yer memory that day. For a test o a sequence ye see ae step at a time, try the order mindin test.

See aw 43 free brain tests

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Cite this page: Chimp Test. Helibrain. 2026. https://helibrain.com/sco/chimp-test. CC BY 4.0.

How this test works

This game tests your short-term memory for where things are and in what order. Numbers appear at random spots on a grid. Look as long as you like, then tap 1: the other numbers turn into blank squares, and you tap them in order from memory. A clean round adds one number. A wrong tap is a strike, and three strikes end the game. Your score is the most numbers you got right in one round. The task comes from a 2007 experiment with young chimpanzees in Japan.

Version 1 · Cite this test:

Helibrain (2026). Chimp test, v1. https://helibrain.com/chimp-test/methods

Full method →

Soorces

  1. Inoue S, Matsuzawa T (2007). Warkin memory o numerals in chimpanzees. Current Biology 17(23):R1004–R1005.
  2. Silberberg A, Kearns D (2009). Memory for the order o briefly shown numerals in humans, in relation tae practice. Animal Cognition 12(2):405–407.

How we made this page: scrieved bi the Helibrain team fae the studies listed abuin, an checked bi Robert(Inglis) (PhD candidate in biophysics) on 11/3/2026. We update it when the soorces chynges.