A MANUAL FOR DEVELOPING SCIENTIFIC METHODS 
OF VOCATIONAL SELECTION 
WALTER VAN DYKE,BINGHAM 
DIRECTOR, PERSONNEL RESEARCH FEDERATION: EDITOR, 
JOURNAL OF PERSONNEL RESEARCH; FORMERLY PROFESSOR OF 
PSYCHOLOGY, CARNEGIE INSTITUTE OF TECHNOLOGY; 
CONSULTANT IN INDUSTRIAL PSYCHOLOGY 
MAX FREYD 
RESEARCH ASSOCIATE, PERSONNEL RESEARCH 
FEDERATION; FORMERLY INSTRUCTOR IN PSYCHOLOGY, 
UNIVERSITY OF PENNSYLVANIA 
La 
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CHICAGO & NEW YORK 
A.W. SHAW COMPANY 
LONDON, A. W. SHAW AND COMPANY, LIMITED 
BY 
AND 
1926