CogBench

A small collection of browser-based cognitive games and attention tests. Pick one to begin. These are educational instruments, not medical or diagnostic devices.

Working memory

Neon Color 2-Back

Track a stream of colors and flag each one that matches the color two steps back. Measures working-memory updating and sustained focus.

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Sustained attention · Go/No-Go

Reaction-Time Variability

Respond to every letter except X. Decomposes your reaction times into speed, consistency, and the lapse tail (ex-Gaussian τ) used in attention research.

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