Previous to the appearance of this arficle (march, 1901) there had been no attempt to present psychol ogy to the business world in a usable form. As far as the advertiser could see all psychologies were writ ten with a purely theoretical end in View. They con tained a vast amount Of technical material devoid of interest to the layman who struggled through the pages. This condition made it quite difficult for the business man to extract that part of the subject which was of value to him.