no. 3] PSYCHOLOGICAL EXAMINING IN THE UNITED STATES ARMY. 561 



Group VI: White officers. — It was the original intention in selecting officers for Group VI 

 to take them in numbers proportional to their occurrence in each arm of the service in a typical 

 divisional organization. The numbers of officers were noted from Tables of Organization for 

 August, 1918, and selections were made to approximate these numbers for infantry, field artil- 

 lery, engineers, field signal battalions, machine-gun battalions, and the Medical Department. 

 These proportional figures give, however, groups that are too small in the case of the field signal 

 battalions and the machine-gun battalions. Accordingly the field signal battahon group was 

 made as large as possible (390), and the machine-gun battahon group was increased to 500. 

 The Medical Department was subsequently enlarged because of the availability of records from 

 this department, and in order that sortings might be made separately for Medical Corps, Dental 

 Corps, Veterinary Corps, and Sanitary Corps. A group from the Quartermaster Corps was 

 added, and a small group of chaplains and members of the school for chaplains was appended 

 still later. An analysis of Group VI is given in table 6. 



Table 6. — Group VI: While officers. 



Number of cases in Group VI of principal sample. Figures show number of cases (all examination alpha), code number 

 for military organization (v. Hollerith code'), and camp at which examinations were made. 



1 The numbers in the Medical Department are made up as follows: 



Medical Corps 3, 273 



Dental Corps 441 



Veterinary Corps 103 



Sanitary Corps 103 



Total 3, 920 



It was originally intended to select officers of the different arms of service equally from 

 different camps in order that the differences in camp procedure might not produce fictitious 

 differences between groups of officers. This procedure proved impossible, because of the small 

 numbers of records available in many cases. Records had to be used wherever they could be 

 found. Since all these records are based upon examination alpha it is probable that the camp 

 procedure makes ultimately little difference; the greatest differences between camps occurred 

 with beta and individual examinations. 



Table 6 gives the counts for the various groups as made initially by hand. There are 

 slight discrepancies with the results of the Hollerith sortings, which sometimes exceed and 

 sometimes fall short of the totals of table 6. The officer groups were, however, not sorted by 



