CONTENTS xvii 



THE ROLE OF PSYCHOLOGY IN THE WAR 



CHAPTER PAGE 



XX How PSYCHOLOGY HAPPENED INTO THE WAR . . . 351 



By Robert M. Yerkes 



XXI WHAT PSYCHOLOGY CONTRIBUTED TO THE WAR . . 364 

 By Robert M. Yerkes 



RELATIONS OF THE WAR TO PROGRESS IN 

 SCIENCE 



XXII THE POSSIBILITIES OF COOPERATION IN RESEARCH . 393 

 By George Ellery Hale 



XXIII THE INTERNATIONAL ORGANIZATION OF RESEARCH . 405 



By George Ellery Hale 



XXIV THE NATIONAL RESEARCH COUNCIL 



By James R. Angell 



INDEX . . -.\ 439 



