Robert Mearns Yerkes

Army Mental Tests

Read by Leon Harvey


Robert Mearns Yerkes and Clarence Stone Yoakum



Prepared in cooperation with the staff of the surgeon general's office as a source of information and printed materials concerning psycholog…

Psychological Examining in the United States Army

Read by Leon Harvey


Robert Mearns Yerkes



When, on April 6, 1917, the Nation was called to war a group of experimental psychologists promptly assembled to consider means of psycholog…