What is the color of each word above? Stating the color is tricky, because your left brain (the verbal part) is guided by each word's meaning...while your right brain (the visual part) is guided by each word's color.
It's a classic (non-surgical) "split" between your left and right brain!
This is a fascinating topic, especially as it applies to many artistic disciplines. Betty Edwards text, "Drawing on the Right Side of the Brain" deals with many of these perceptual/visual tangles, particularly as they apply to drawing. Some people do not experience them the same way as others, of course, or have no trouble at all with some of the experiments, such as friend Cags, but they are nonetheless fun and interesting.
I find it very easy to ignore the actual colors and read the words. However, if I invert the test to look for green as "go" and red as "stop", it is equally easy to ignore the words. I suspect that would be true for most people, which is why requiring you to to do one thing if you read green and another if you actually see the color would be better. The time it takes you to react correctly would more accurately indicate any dominance.
I do not know if anyone has actually done such testing.
As Pcunix says, as soon as my brain discovers that the word is the "wrong" color it is very easy to ignore the actual word/letters and simply look at colors. At that point is is easy to correctly say the colors.
If though the word is actually read however, it then becomes an exercise in reading the word, discovering the right color and deciding which to report. As the two are in conflict it takes a conscious effort of thought to do so.
Simplistically, the right brain can't read so use it exclusively during the test.
That was kind of my point. If you can block the left brain side, the right side takes over and it's easy. If you allow the conflict between the two it takes much more effort to get it right. A clear difference in the workings and capabilities of each.
There was a women whose right brain was a suicidal maniac and the left a devote christian. She had a stroke which caused a right left dissociation. Suddenly the restricting effect of her left brain is gone and her right...
Well today I went over to the in laws for dinner after running out of excuses of why I couldn't attend one of their fancy dinners..I was forced to watch Tyra Banks Show (God I hate talk shows in general)and funny enough...