WHAT PSYCHOLOGY CONTRIBUTED 369 



officers on their general value to the service as very poor, poor, 

 fair, good, or best. These same men were independently rated 

 by psychological examiners. The average degree of intelli- 

 gence in each of the five groups is roughly represented by the 

 length of the heavy line and by the numerical rating printed 



Median Score 



Good 



Best 



Figure 7. The median intelligence scores (by points) of groups of 

 soldiers who were rated by their officers as " very poor " to " best " 

 in military value. 



beneath each line. Thus, for example, whereas the intelligence 

 of men rated as very poor is indicated by the number 28, that 

 of men designated as best is indicated by 99. The contrast is 

 unquestionably significant and it is clear that the army would 

 have profited greatly had the very poor group been excluded 

 from service on the basis of intelligence measurements. 



A similar picture is presented in Fig. 8, which indicates the 

 contrast between men judged of low military value by their 

 officers and the complete draft quota from one of the camps. 

 The most common grade of intelligence in the unsatisfactory 

 group is slightly above D; that is, inferior, whereas for the 

 entire draft quota the most common grade is between C and C-(-- 



