BOOK FOUR. 



PSYCHOLOGY, ANTHROPOLOGY, AND 

 SOCIOLOGY. 



(MJND, MAJT, AJTO SOCIETY.) 



CHAPTER XIL 

 PROOBESS OF PSYCHOLOGY.* 



PSYCHOLOGY is " the positive scionc* of mental 

 process"; it investigates mental cvcnU in their co- 

 existence and sequence, or mental products in their 

 subjective aspect It has to do with the racial evolu- 

 tion of the mind and the development of tbo indi- 

 vidual consciousness, but not with what ought to bo 

 in thought or in conduct (logic and ethics), nor with 

 the nature of knowledge as such (metaphysics). 



Its data are obtained from a study of the products 

 of past mental processes and of the stages of processes 

 presently occurring or just fading into the past Its 

 methods are introspection and retrospection, observa- 

 tion and experiment And it aims, like other sci- 

 ence, at restating the facts in general formulae, or in 



The aim of this chapter is simply to illustrate four 

 noteworthy changes in the aims ana methods of psychol- 

 ogy which may be called characteristic of the nineteenth 

 century. 



