no. 3] PSYCHOLOGICAL EXAMINING IN THE UNITED STATES ARMY. 783 



Probably tbe best measure of intelligence which the Army tests have yielded is a com- 

 bination of the standing on alpha, beta, and individual examinations. 1 This, though not 

 practicable for actual use, was computed for the experimental group of 653 men from nine 

 camps. The schooling reported by this group was plotted against this combined standing with 

 the result shown in table 331. 



Table 331. — Relation of schooling to intelligence. 



r=+0.75 



It is again evident here that though an intelligent man may drop out of school at almost 

 any stage beyond grade 4 an unintelligent man is most unlikely to remain in school beyond the 

 eighth grade. Distinctly more than average intelligence would seem to be a prerequisite to a 

 college education and almost as strictly a prerequisite to graduating from or even entering 

 high school. 



1 For description o[ method used in combining these scores see K. S. Woodworth, A Study of Statistical Method, Psych. Rev., vol. 19, 1912, 

 pp. 99fl. 



