672 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



Table 194. — Percentage distribution by group for three selected camps of the alpha scores of men who took alpha only. 



Alpha score. 



Dix. 



Group 



Group 

 II. 



25.0 

 '25.0 



25.0 



Group 

 III. 















.1 



.1 



.2 



.1 



.2 



.5 



.7 



.5 



.4 



.8 



1.2 



1.4 



1.2 



1.5 



1.8 



3.1 



2.1 



2.5 



2.5 



2.8 



3.2 



3.5 



3.5 



3.5 



4.9 



4.3 



4.8 



4.2 



5.6 



4.9 



5.4 



6.3 



L8 



4.5 

 4.2 

 3.6 



2.4 

 2.2 

 2.0 



Total. 



0.1 



.1 



.2 



.1 



.3 



.4 



.7 



.5 



.5 



.7 



.9 



1.1 



1.2 



1.5 



1.6 



2.6 



2.1 



2.2 



2.3 



2.7 



2.6 



3.3 



4.5 

 4.6 

 4.7 

 3.7 

 2.7 

 2.8 

 6.7 



2,657 



Dodge. 



Group 











.2 







.2 



.4 







.4 



.2 



.2 



1.3 



.4 



.9 



1.3 



1.5 



.9 



2.6 



2.6 



3.5 



3.0 



3.5 



4.3 



4.4 



5.0 



4.3 



6.7 



6.7 



3.7 



5.9 



5.9 



4.6 



4.3 



6.1 



5.4 



3.5 



2.7 



2.7 



.7 



.4 







Group 

 II. 



.1 







.2 



.2 



.1 



.6 



.6 



.9 



.6 



.9 



1.5 



1.7 



2.8 



1.7 



2.5 



5.3 



3.6 



4.6 



3.1 



4.2 



9.0 



4.9 



6.3 



7.2 



5.3 



6.6 



6.0 



4.8 



4.6 



3.2 



2.8 



1.6 



1.8 



.6 











Group 

 III. 



.2 

 .1 

 .2 

 .4 

 .1 

 .4 

 .4 

 1.2 



1.2 

 1.1 

 1.7 

 1.9 

 3.1 

 3.0 

 3.3 

 3.6 

 3.7 

 3.8 

 4.8 

 4.6 

 6.0 

 5.5 

 5.1 

 6.8 

 6.1 

 6.1 

 5.4 

 4.8 

 4.6 

 4.1 

 1.9 

 1.5 

 .8 

 .5 

 .1 



1,685 



Total. 



0.03 



.2 

 .03 

 .16 

 .2 

 .1 

 .4 

 .3 

 .9 

 .9 

 .5 

 .8 

 1.1 

 1.2 

 1.6 

 2.2 

 2.6 

 2.9 

 3.8 

 3.5 

 4-1 

 3.7 

 4.7 

 5.7 

 5.8 

 5.9 

 5.4 

 6.2 

 6.2 

 5.8 

 5.0 

 4.9 

 4.3 

 3.6 

 1.9 

 1.8 

 .7 

 .3 

 .1 



3,046 



Lee. 



Group 



.3 

 .3 



.8 

 1.0 



.5 

 1.0 

 1.0 

 1.0 

 1.8 

 1.6 

 3.1 

 2.1 

 2.1 

 2.1 

 1.6 

 5.8 

 4.5 

 3.7 

 4.5 

 6.2 

 4.2 

 5.2 

 6.8 

 5.0 

 5.0 

 6.3 

 4.4 

 3.4 

 6.0 

 4.7 

 2.9 

 1.8 



.5 



384 



Group 

 II. 





 

 

 

 

 

 

 

 

 

 .7 

 

 .7 

 .7 

 

 

 .7 

 .7 

 .7 

 2.1 

 .7 

 3.6 

 1.4 

 2.1 

 1.4 

 2.1 

 2.9 

 2.9 

 5.0 

 3.6 

 4.3 

 6.5 

 4.3 

 9.4 

 2.9 

 5.8 

 5.0 

 5.0 

 8.6 

 7.2 

 6.5 

 2.2 



139 



Group 

 III. 





 

 

 



.1 



.2 

 

 



.1 



.3 

 .1 



.2 



.2 



.5 



.3 



.5 



.8 



1.0 



.9 



1.0 



1.0 



1.6 



1.8 



2.0 



2.4 



2.5 



2.5 



2.7 



3.1 



4.2 



5.3 



4.6 



5.4 



fi.3 



6.3 



6.4 



5.6 



5.5 



6.9 



6.9 



7.4 



1,867 



Total. 



0.04 

 .16 



.04 



.04 



.25 



.16 



.29 



.38 



.5 



.4 



.54 



.8 



1.1 



1.0 



1.4 



1.1 



1.8 



1.8 



1.9 



2.9 



2.8 



2.7 



3.0 



3.6 



4.2 



5.2 



5.0 



5.3 



6.3 



6.1 



6.0 



5.7 



5.6 



6.7 



6.3 



6.5 



2.0 



2,390 



Still greater questions as to the reliability of the figures arise when the score distributions 

 in the three groups are studied by camps. In table 194 there is shown a percentage distribu- 

 tion by groups for three selected camps of the alpha scores of the men who took alpha only 

 and therefore received their final rating on the basis of alpha. These distributions are also 

 shown in figures 12, 13, and 14. In the case of Camp Dix the number of cases in the second 

 group is so small that that group had no effect on the whole distribution. The differences 

 between Groups I and III are very large at the lower end of the scale particularly, for in Group 

 I 12.8 per cent of the men made scores ranging from to 4, while in Group III no men at all 

 fell in this group. In the case of Camp Dodge the distributions for the three groups are not 

 widely divergent except in one or two of the score intervals. At Camp Lee, however, we again 

 find rather wide differences. Table 195 shows percentage distributions by groups for three 

 selected camps of the men who took beta only or alpha and beta only. These distributions 

 are also shown in figures 15, 16, and 17. Here again there are rather wide group differences. 

 The differences are especially noticeable in Camp Lee between Groups I and III. There is no 

 way of telling in these cases where the distributions of the groups differ widely which distribu- 

 tion, if any, is typical of the camp at the time when the cards were drawn. It is, of course, 

 more likely that the combination of the three groups presents a reliable picture but there is no 

 way of determining with any degree of certainty whether or not this is so. These facts should 

 be held in mind when the comparison of the camps is made. 



