516 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



COMPARISON WITHIN THE OFFICER GROUP. 



Analysis of the data regarding officers is less complicated than similar analysis of the various 

 groups of enlisted men. This is largely due to the fact that there is no problem of segregation for 

 illiteracy, and that, accordingly, the whole group can be measured by one method; in this 

 case examination a. More exact comparison between groups (e. g., between camps or between 

 branches) is therefore possible. 



Comparison of camps. — Table 155 gives the percentage distribution of officers' scores by 

 camps. The distribution for all four camps combined, given in the final column, has been shown 

 graphically in connection with the distribution for enlisted men on page 507. 



21 . 9 i. 3 i.O% 46.9% 



0.2% 

 V~7 





ALL CAMPS 



C3% 130% 



V~7 



E 



23.9?. 



22.15* 





21.7% 



59.0 % 



DEVENS 



31.67! 



44.5 % 



DIX 



32.7% 



45.071 



LEE 



0.2% 



2&Z°/. 



% BELOW B 



31.0% 



406% 



TAVLOR 



% 



& OR A 



V. 



3 



a 



Ftg. 21. Comparison of officers by camps, showing percentages in each letter grade. Officers: Total, 5,563; Devens, 1,147; Dix, 1,052; Lee, 

 2,038; Taylor, 1,276. 



Figure 21 presents graphically the data of this table, summarized by letter grades. The 

 various bars, representing the different camps, are divided into segments corresponding to the 

 different grades. Since the A and B grades are considered peculiarly characteristic of officers, 

 the bars are located with reference to the line separating the A and B grades from those below 

 B. From the point of view of certain specific interests other dividing lines might obviously 

 have been chosen. Considering, first, the proportions of A and B cases in each camp it is 

 evident that the Devens officers stand out as superior to the other groups, and the Taylor officers 

 as inferior, with the Dix and Lee groups falling between and differing only slightly from one 

 another. Reference to percentages making A grades shows the same order of precedence, but 

 differentiates the Devens officers from the other three more strikingly. Comparison with refer- 

 ence to percentages making C or above is valueless; the numbers falling below this level are 

 negligible so that differences between groups are lost. 



