X PSYCHOLOGICAL METHODS OF TESTING INTELLIGENCE 



ported for the first time in the present monograph. 

 In conjunction with Lipmann he has also founded the 

 Institut fiir angewandte Psychologic, which aims to 

 serve as a museum and clearing house for the col- 

 lection and dissemination of methods and materials 

 for studying and recording the mental processes of 

 individuals and for facilitating the application of 

 psychology to various practical problems. 



What Stern has aimed to do in the present mono- 

 graph is sufficiently set forth in his own preface, but 

 it may be added here that his book affords what is, 

 so far as I know, the best, and in fact almost the only 

 authoritative, critical and compact general survey 

 of the literature of intelligence testing which is 

 adapted for lay readers as well as for professional 

 psychologists. 



In perfecting this translation I have received much 

 valuable aid from the members of my class in Ger- 

 man Educational Psychology, in which the mono- 

 graph was used as a text, and from my colleagues, 

 Professor P. E. Pope, of the German Department, 

 and Mr. D. K. Fraser, assistant in Educational Psy- 

 chology. 



GUY MONTROSE WHIPPLE. 



Cornell University, January 1st, 1914. 



