Ko.3.] PSYCHOLOGICAL EXAMINING IN THE UNITED STATES ARMY. 827 



Table 377. — Intelligence and occupation. Median and quartile scores in examination alpha of occupational groups in 



study by Surgeon General's Office — Continued. 



GROUP D (45-80 CASES). 



GROUPS, RANGE OF CASES, AND NUMBER OF OCCUPATIONS. 



Groups A, B, 0, and D were considered separately, but no further study was made of the 46 occupations in Group E. 

 Additional data on these are needed, and it would seem desirable also to obtain further reports on Groups C and I). 



The data for the 68 occupations of Groups A, B, 0, D are summarized in table 378. The median and quartile 

 scores are given for the alpha cases and for the beta cases of each occupation, and for apprentices, journeymen, and 

 experts separately. The occupations within each group are arranged in the order of the symbols used by the committee 

 on classification of personnel. 



In order to render the data of table 377 more usable, the percentage receiving each letter grade was determined 

 for each occupation. In doing this apprentices, journeymen, and experts were combined, for the differences were 

 not as a rule significant, and the classification was made for the most part on the basis of personnel interview and not 

 by means of trade tests. 



Both alpha and beta numerical scores were converted into letter grades on the present basis (Aug. 8, 1918). 

 These letter ratings were then combined, and the percentage receiving each grade as well as the percentage distribu- 

 tions were calculated. The percentage distributions are given in table 378. 



