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Over time, the Corsi test began to be used in electronic form, as the role of the examiner was replaced by a computer. Thanks to this, the test spread rapidly; we have it in our game Teleport.

The Corsi test trains spatial imagination and short-term and sensory memory. Interestingly, words (verbal information) play no role in it, so the test is independent of the nationality or age of the person being tested.

The test was developed in 1972 by Philip Michael Corsi. It consisted of a set of nine wooden squares of the same size, randomly arranged on a playing board. The task of the test subject was to repeat the instruction demonstrated by the examiner – to tap all the squares one by one in the same order as the examiner. Difficulty increased continuously, and when the subject made frequent errors, the test ended.

Corsi was inspired by an older intelligence test known as the Digit Span. In that test, the examiner reads a series of numbers and the subject repeats them back in the same order.