The Effect of Practice on the NCWd Test upon the NC Test
The middle section of Table VI shows a gain on the NC test of 4.0 seconds or 13.9 percent of the initial score. This is only 23.7 percent of the gain on the NCWd test which means that less than one fourth of the total gain on the NCWd test is due to increase in speed in naming colors. The improvement is greater for the males, which is accounted for by the fact that there is more difference between naming colors and reading names of colors for the males than for the females.