Data
California Institute of Technology
| Fields | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|
| All fields | 200 | 227 | 204 | 145 | 146 | 206 | 190 | 180 | 189 | 182 |
| Science and engineering | 200 | 227 | 204 | 145 | 146 | 206 | 190 | 180 | 189 | 182 |
| Agricultural sciences and natural resources | 1 | 1 | . | . | 2 | . | 1 | 3 | 1 | . |
| Agricultural sciences | 1 | . | . | . | . | . | . | . | . | . |
| Natural resources and conservation | . | 1 | . | . | 2 | . | 1 | 3 | 1 | . |
| Biological and biomedical sciences | 23 | 36 | 31 | 21 | 19 | 31 | 20 | 20 | 25 | 34 |
| Biochemistry and biophysics | 4 | 2 | 4 | 2 | 6 | 10 | 4 | 9 | 9 | 9 |
| Biology and biomedical sciences, general | 9 | 18 | 10 | 2 | 3 | 7 | 2 | 1 | 4 | 3 |
| Bioinformatics, biostatistics, and computational biology | 2 | 2 | 2 | . | . | 3 | 2 | 1 | 1 | . |
| Cellular and developmental biology, and anatomy | . | 4 | 4 | 1 | . | . | 1 | 2 | 5 | 2 |
| Ecology, evolutionary biology, and epidemiology | . | 1 | . | . | . | . | 1 | . | . | . |
| Genetics and genomics | 3 | 1 | 1 | 2 | 1 | 3 | 1 | 2 | . | . |
| Microbiology and immunology | 1 | 1 | . | 2 | 2 | 2 | 1 | 1 | . | 4 |
| Molecular biology | . | . | . | 4 | . | 2 | 2 | 1 | . | 4 |
| Neurobiology and neurosciences | 4 | 7 | 8 | 6 | 7 | 4 | 4 | 2 | 4 | 11 |
| Biology and biomedical sciences, other | . | . | 2 | 2 | . | . | 2 | 1 | 2 | 1 |
| Computer and information sciences | 2 | 7 | 5 | 2 | 5 | 3 | 2 | 6 | 2 | . |
| Computer science | 1 | 5 | 4 | 2 | 5 | 3 | 2 | 5 | 2 | . |
| Computer and information sciences, other | 1 | 2 | 1 | . | . | . | . | 1 | . | . |
| Engineering | 55 | 77 | 61 | 60 | 48 | 67 | 65 | 47 | 72 | 59 |
| Aerospace, aeronautical, and astronautical engineering | 7 | 12 | 7 | 10 | 8 | 14 | 13 | 9 | 11 | 8 |
| Bioengineering and biomedical engineering | 14 | 17 | 13 | 8 | 11 | 11 | 10 | 2 | 3 | 8 |
| Chemical and petroleum engineering | 6 | 12 | 11 | 4 | 5 | 7 | 3 | 10 | 7 | 7 |
| Civil, environmental, and transportation engineering | 1 | 1 | 1 | 4 | 3 | 2 | 5 | 2 | 2 | 6 |
| Electrical and computer engineering | 9 | 7 | 10 | 7 | 7 | 6 | 8 | 10 | 13 | 13 |
| Industrial engineering and operations research | 1 | . | . | . | . | 2 | . | 1 | 2 | . |
| Materials and mining engineering | 7 | 10 | 4 | 8 | 5 | 17 | 13 | 8 | 13 | 7 |
| Mechanical engineering | 9 | 15 | 12 | 16 | 8 | 6 | 11 | 4 | 17 | 9 |
| Engineering, other | 1 | 3 | 3 | 3 | 1 | 2 | 2 | 1 | 4 | 1 |
| Geosciences, atmospheric, and ocean sciences | 20 | 15 | 24 | 10 | 4 | 12 | 12 | 16 | 23 | 6 |
| Geological sciences | 16 | 9 | 13 | 9 | 4 | 8 | 10 | 11 | 17 | 6 |
| Ocean, marine, and atmospheric sciences | 4 | 6 | 11 | 1 | . | 4 | 2 | 5 | 6 | . |
| Health sciences | . | . | . | . | . | 1 | . | . | . | . |
| Health sciences, other | . | . | . | . | . | 1 | . | . | . | . |
| Mathematics and statistics | 10 | 10 | 12 | 9 | 8 | 10 | 5 | 15 | 6 | 9 |
| Applied mathematics | 6 | 8 | 2 | 4 | 3 | 3 | . | 7 | 3 | 2 |
| Mathematics | 1 | . | 3 | 1 | 2 | 2 | 4 | 3 | 2 | 7 |
| Mathematics and statistics, other | 3 | 2 | 7 | 4 | 3 | 5 | 1 | 5 | 1 | . |
| Physical sciences | 80 | 76 | 66 | 41 | 56 | 78 | 77 | 69 | 51 | 65 |
| Astronomy and astrophysics | 16 | 12 | 7 | 10 | 9 | 15 | 14 | 12 | 7 | 10 |
| Chemistry | 33 | 35 | 26 | 16 | 21 | 31 | 31 | 27 | 27 | 30 |
| Physics | 31 | 29 | 33 | 15 | 26 | 32 | 32 | 30 | 17 | 25 |
| Psychology | . | . | 2 | 1 | 1 | 1 | 2 | . | 2 | 1 |
| Research and experimental psychology | . | . | 1 | 1 | 1 | 1 | 2 | . | 2 | 1 |
| Psychology, other | . | . | 1 | . | . | . | . | . | . | . |
| Social sciences | 9 | 5 | 3 | 1 | 3 | 3 | 6 | 4 | 7 | 8 |
| Economics | 5 | 3 | . | . | 2 | 2 | 4 | 4 | 6 | 6 |
| Political science and government | . | . | 1 | . | . | 1 | 1 | . | . | 1 |
| Social sciences, other | 4 | 2 | 2 | 1 | 1 | . | 1 | . | 1 | 1 |
NOTES:
- . = data were not collected at this level or institution was not eligible to participate for this survey year.
SOURCE: National Center for Science and Engineering Statistics, Survey of Earned Doctorates
