Table 5-12
Carnegie classifications of doctoral institutions of Ph.D.s, by major field of doctorate: 1990–99
(Percent of Ph.D.s)
 
Field Research I Research II Doctoral I Doctoral II Other
All fields 68.3 11.5 10.6 4.4 5.3
Science and engineering 72.1 11.2 7.5 4.3 4.9
Agricultural sciences 78.5 16.6 0.2 3.7 1.1
Biological sciences 73.2 9.1 3.7 3.7 10.3
Earth, atmospheric, and ocean sciences 73.2 13.4 4.9 6.0 2.6
Mathematics and computer sciences 74.8 11.6 8.0 4.9 0.7
Physical sciences 76.3 11.6 6.2 4.8 1.1
Psychology 47.0 12.9 19.5 5.7 14.8
Social sciences 77.4 10.7 8.2 2.5 1.2
Engineering 77.8 10.7 5.5 4.5 1.5
Non-science and engineering 61.4 12.0 16.0 4.5 6.1
Education 49.7 14.5 23.2 7.4 5.3
Health sciences 73.7 7.4 7.0 3.1 8.9
Humanities 75.7 9.0 9.6 1.7 4.1
Professional fields/other 61.2 13.0 12.9 2.3 10.7
 
SOURCE: NSF/NIH/USED/NEH/USDA/NASA, Survey of Earned Doctorates and Doctorate Records File.
 
U.S. Doctorates in the 20th Century