LIST OF CONTRIBUTORS 



Walter V. Bingham, Ph.D., Sc.D. Director, Personnel Research 

 Federation, New York. Formerly Professor of Psychology, 

 Carnegie Institute of Technology and President The Psycho- 

 logical Corporation. 



Hugh S. Cumming, M.D., Sc.D. Surgeon-General, United States 

 Public Health Service. 



Edward M. East, Ph.D., LL.D. Professor of Genetics, Harvard 

 University. 



Morris Fishbein, M.D. Associate Professor of Clinical Medicine, 

 Rush Medical College. Editor, Journal of American Medical 

 Association. 



Frank H. Hankins, Ph.D. Professor of Sociology, Smith College. 



Joseph Jastrow, Ph.D., LL.D. Lecturer, New School for Social 

 Research. Formerly Professor of Psychology, University of 

 Wisconsin. 



Donald F. Jones, Sc.D. Geneticist, Connecticut Agricultural 

 Experiment Station. Editor, Genetics. 



E. Kennerly Marshall, Jr., M.D., Ph.D. Professor of 

 Physiology, Johns Hopkins University. 



Elmer V. McCollum, Ph.D., Sc.D. Professor of Biochemistry, 

 Johns Hopkins University. 



Howard M. Parshley, Sc.D. Professor of Zoology, Smith 

 College. 



Arthur M. Stimson, M.D. Assistant Surgeon-General, United 

 States Public Health Service. 



Lewis M. Terman, Ph.D., LL.D. Professor of Psychology, 

 Stanford University. 



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