WHAT PSYCHOLOGY CONTRIBUTED 371 



grade and low grade men in the several companies of an 

 infantry regiment. The intermediate grades of intelligence 

 are omitted as irrelevant and the figure represents the per- 

 centage of A and B men in each company, and, by contrast, 

 the percentage of men who are illiterate or of foreign birth. 

 The first of these groups is, in the long run, highly valuable 

 because of ease of training, general adaptability, and service- 



Company 



I K L 



M M.G.Sup.Hdq. 



Illiterate 



Foreign 



46 



Figure 9. Inequalities of intelligence among the companies of an in- 

 fantry regiment. 



ability for responsible tasks. The second is generally undesir- 

 able from the officers' point of view because it requires more 

 time and patience for training, supplies relatively few men for 

 the duties of officers or for other responsible tasks and, in a 

 word, is often extremely difficult to train satisfactorily because 

 of a certain proportion of very slow, dull, or unwilling men. 

 The contrast between C company and E company in this 



