Visual Impressions Most Accurate

Besides being the strongest of all the senses, sight is the most accurate. Psychological tests have shown the eye to be mistaken only eighteen per cent of the time, and the ear, which is the second sense in strength, is mistaken thirty-four per cent. Note that your sense of sight is especially endowed with the power to make the strongest, and at the same time, the most accurate impression upon your brain. The first step in memory improvement is to learn the proper use of this sense in impressing upon the brain those things which you wish to recall.

For the purposes of memory, to see a thing once is equal to having repeated it eighteen or twenty times.