The following is a brief description of the assumptions and restrictions used to extract information from the individual data files.

SURVEY OF EARNED DOCTORATES (SED) (1920-1998)

The specialties list used in the SED for identifying doctoral fields in Science and Engineering (S&E) consists of the following major categories:

  • Agricultural Sciences

  • Biological Sciences

  • Health Sciences

  • Engineering

  • Computer and Information Sciences

  • Mathematics

  • Physical Sciences

  • Astronomy

  • Atmospheric Sciences and Meteorology

  • Chemistry

  • Geological & Related Sciences

  • Physics

  • Psychology

  • Miscellaneous Physical Sciences

  • Social Sciences

For the purpose of this guide these names were used to identify fields or they were combined as follows:

  • Life Sciences (Agricultural Sciences, Biological Sciences, Health Sciences)

  • Engineering

  • Mathematical Sciences (Computer and Information Sciences, Mathematics)

  • Earth, Atmospheric, and Ocean Sciences (Atmospheric Sciences and

  • Physics and Astronomy (Physics, Astronomy) Meteorology, Geological & Related Sciences, Miscellaneous Physical Sciences [except Other Physical Sciences])

  • Chemistry

  • Social and Behavioral Sciences (Psychology, Social Sciences)

All doctorates were selected independent of citizenship in determining the number of doctorates by field and in identifying postdoctoral plans in Table B-11. Only those doctorates who indicated that they have accepted a postdoctoral position or are negotiating with a specific organization were selected.



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