Allow a third glance at the color strip while you count ten, and have
each begin at the left hand end of the strip, noting the arrangement of
the colors, and see if they can write accurately the order in which the
colors appear on the card.
The first test is for quick reaction of the mind. The amount that
they are able to observe in a given length of time will depend upon
the rapidity with which their minds react. This test is designed to
determine the rapidity of the mental reaction. About thirty-five per
cent of those who take it are able to get the correct number, where the
number of colors is not more than seven.
The second test is designed to determine the ability of the mind to
hold the color impressions. About twenty-five per cent are able to
retain the impression of the seven colors.
The third test combines the power to retain the color impression with
the ability to retain the correct order. Experience shows that not over
ten per cent are able to give the order accurately.
Similar tests repeated will give a great amount of exercise and soon
result in a perceptible increase in the power to accomplish the desired
results.