Hacaro - StroopTest app for iPhone and iPad

The Stroop test is known as a cognitive function test that measures the
ability of attention or judgment.
It is considered to be associated with the function of the frontal lobe or
anterior cingulate gyrus.
There are two tasks; the first task is "Color Naming" and the second is
"Incongruent Color Naming".
First, please answer the name of four colors (red, blue, green, yellow) as
quickly as and as accurately as possible.
Second, please answer the name of the color that was written by the
incongruent color word intentionally.
It is known that the time for the Incongruent Color Naming task becomes
slower than the time for the Color Naming task. This is called Stroop
effect.
Each test has 20 questions, correct score and time are displayed.