662 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



20%-, FORM 5 FORM 6 FORM 7 FORMS FORM 9 



A&e> 



MEAN SCORE 

 (P.E.. 0.3) 



0&0 



66.8 60.9 64.3 61.7 6O.9 



Fig. 9. Comparison of alpha forms. Percentages of A or K grades, and of D or D— grades, on each of the five forms. Form 5, 6,648 cases; form 

 6, 5,803 cases; form 7, 8,038 cases; form 8, 5,151 cases; form 9, 6,327 cases; all from principal Hollerith sample, Group I (white draft). 



Distributions of total score on examination alpha for the five forms separately were at 

 hand for five groups, totaling 19,907; draft groups from Camp Dix, 3,048; Jackson, 3,540; 

 Sevier, 4,742; and Wadsworth, 7,481; and a group of officers from Camp Wadsworth, 1,096. 

 Tables 179 to 181 present data from these distributions. 



