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MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



Table 187. — Variables: Score on performance scale examinationXcamp. Groups I, II, III: White draft. 

 For men who took performance scale examination only, or following alpha, following beta, or following alpha and beta. 



Table 188. — Variables: Alpha scoreXcamp. Groups I, II, III: White draft. 



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



an individual examination. 



