UTILIZATION OF BRAIN POWER IN ARMY 203 



intelligence ratings. The elimination increases rapidly 

 for grades below C + Of men rating above C, only 18.49 

 per cent, were eliminated ; of men rating below C, 62.41 

 per cent. The results presented in this figure were ob- 

 tained from four schools with a total enrollment of 1,458 

 men. 



Increasingly extensive and effective use has been made 

 of the psychological rating as an aid in the selection of 

 men for officers' training schools, non-commissioned offi- 

 cers' training schools and other lines of training or service 

 which require special ability. It has been convincingly 

 demonstrated that the data of psychological examinations 

 can readily be used to diminish the necessary elimination 

 during training and thus to increase the efficiency of the 

 schools. 



The extreme differences in the intellectual status of 

 army groups are fairly indicated by Fig. 4, which pre- 

 sents the data for groups whose military importance can- 

 not readily be overemphasized. Roughly, the groups in 

 the upper half of the figure are important because of 

 their relatively high intelligence and the mental initiative 

 demanded for success, whereas those in the lower half 

 of the figure are important because of poor intelligence 

 and relative inefficiency or uselessness. 



These results suggest that if military efficiency alone 

 were to be considered, the army would undoubtedly gain 

 largely by rejecting all D and E men. This procedure 

 would greatly lessen the group of disciplinary cases so 

 troublesome and costly in the military organization and 

 also the group which in the figure is distributed among 

 "ten poorest privates," "men of low military value" and 

 "unteachable men." 



Numerous varieties of evidence indicate the extreme 

 military importance of the prompt recognition of low 

 grade men. The percentages of men ranking below the 

 average in psychological examinations are notably large 

 for the disciplinary group, men having difficulties in drill, 



