A brain test

This is an interesting test called "Stroop Test" after Ridley Stroop who  was an American psychologist who published the effect of this test in the English language.. This test challenges selective attention, that is, one’s ability to carefully choose which environmental stimuli to focus on—and which ones to ignore. This is associated with the executive function of the brain which controls, regulates and manages cognitive processes. 
Individuals with ADHD (attention deficit hyperactivity disorder) and depression—who struggle to attend to select stimuli and control their reactions— often have increased difficulty performing the Stroop Test.
HAVE A TRY!
http://faculty.washington.edu/chudler/java/ready.html