750 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



Table 285. — Variables: Mental age on Stanford-Binet examination X schooling. Group I, II, III: White draft (native born) . 



For men who took Stanford-Binet following alpha, or following beta, or following alpha and beta, or who took Stanford- 

 Binet examination only. 



Table 286. — Variables: Alpha X schooling. Groups I, II, III: White draft (native born). 



seta only, alpha and an ii 

 individual examination. 



For men who took alpha only, or alpha and beta only, alpha and an individual examination, or alpha, beta, and an 



idu; ' 



