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…