Quick, interactive brain teaser to test your concentration and cognitive flexibility

Here is a fun and inter­ac­tive ver­sion of the famous Stroop test, often used in neu­ropsy­cho­log­i­cal eval­u­a­tions to mea­sure response inhi­bi­tion and cog­ni­tive flex­i­bil­ity. Per­form­ing well on the test requires strong con­cen­tra­tion and self-regulation.

Your job is to name the col­ors of the words. Do NOT read the words but the col­or of the ink used to write the words. For exam­ple, if the word “GREEN” is print­ed in a red col­or, you should say “RED” (and refrain from say­ing “GREEN”!)

Ready. Set. GO

Speed mat­ters so try to say the col­ors as fast as you can. A nice fea­ture here: You will be able to record your reac­tion times.

Pas­cale Mich­e­lon, PhD, is a sci­en­tist, edu­ca­tor, and con­tribut­ing author to The Sharp­Brains Guide to Brain Fit­ness: How to Opti­mize Brain Health and Per­for­mance at Any Age.

For more fun cog­ni­tive stim­u­la­tion, try these Top 25 Brain Teasers, Games & Illu­sions for Adults.