NATURE AND PROBLEM OF INTELLIGENCE TESTING 5 



But just on account of this composite character of 

 every actual mental process it seems to me that the 

 definition of intelligence I have given above is indis- 

 pensable as a regulative principle for further investi- 

 gation : I mean that any sort of perceptive, memorial 

 or attentive activity is at the same time an intelli- 

 gent activity just in so far as it includes a new adjust- 

 ment to new demands. 



We must add one final limitation : we are consid- 

 ering only those phases of intelligence testing that 

 deal with a scale of degrees. This does not mean to 

 minimize in the slightest the importance of qualita- 

 tive differences in types of intelligence (analytic- 

 synthetic, objective-subjective, etc.) ; we need only 

 refer to the importance of the essay as a means of 

 testing for these phases. 1 But we shall discuss in 

 this monograph only those forms of procedure that 

 permit us to say of a given person that his intelli- 

 gence is of such and such degree. 



As the title of the book indicates, the problem of 

 method will be prominent throughout our presenta- 

 tion. We can thus best do justice to the present 

 status of the question, for the significance of the re- 

 sults thus far obtained lies particularly in the fact 

 that they serve to provide new suggestions for the 

 perfecting of our methods. 



2. Practical Problems of Intelligence Testing 

 Since we have to do here not with methods de- 

 signed for purely theoretical investigations, but with 



a On this aspect of intelligence, consult the general review and 

 bibliography given in my earlier discussion (1 : pp. 203-213, 433-4). 



[Note : numbers in parentheses refer, unless otherwise indicated, 

 to the reference list at the end of this monograph. Translator.] 



