Cognitive Test Library

A set of free cognitive tests in eight languages. These tests are designed to work on all modern browsers and platforms including cellphones and iPads.

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Digit Span

In this test, participants hear a sequence of numbers. After the sequence finishes, the task is to type the numbers in their original order. For example, if particpants hear "5, 2", their task is type 52 (without spaces).

Number-Letter

In this test, participants hear a mixed sequence of numbers and letters. After the sequence finishes, the task is to first type the numbers in numeric order, then the letters in alphabetic order. For example, if participants hear "7-c-3-a", their task is to type 37ac (without spaces).

Flanker

In this test, participants are asked to respond quickly and accurately to a series of images. Based on the image presented, particpants are to respond/not respond to the direction of a red arrow.