NATIONAL ACADEMY OF SCIENCES. 



Volume XV. 



PSYCHOLOGICAL EXAMINING IN THE UNITED STATES ARMY 



Part I. — History and Organization of Psychological Examining and the 

 Materials of Examination. 



Part II. — Methods of Examining: History, and Development, Prelim- 

 inary Results. 



Part III. — Measurements of Intelligence in the United States Army. 



EDITED BY 



ROBERT M. YERKES. 



I ttol 



