Citation Rankings
Highly Cited Researchers

Exponent Inc Highly Cited Researchers Citation Rankings 2025

The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection :1
United States
Paul D Boehm
Environmental chemistry
natural resource damage assessment
environmental forensics
ecological risk
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,668
1,118
0.146
* Total Citation Counts Rankings
Ranking Based On Selection :2
United States
Anne Fairbrother
Ecotoxicology
Wildlife health
Ecological Risk Assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,926
1,489
0.251
* Total Citation Counts Rankings
Ranking Based On Selection :3
United States
John Desesso
Developmental Biology
Teratology
Reproduction
Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,703
1,313
0.279
* Total Citation Counts Rankings
Ranking Based On Selection :4
United States
William G Hardin
Defense
Surface Science
Prototyping
Strategy
Tactics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,372
2,341
0.694
* Total Citation Counts Rankings
Ranking Based On Selection :5
United States
Sean F Ryan
Risk Assessment
Genetic Engineering
Genomics
Citizen Science
Entomology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,817
1,547
0.851
* Total Citation Counts Rankings
Ranking Based On Selection :6
United States
William Goodfellow
Ecotoxicology
Toxicology
Aquatic Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,306
841
0.644
* Total Citation Counts Rankings
Ranking Based On Selection :7
United States
Konrad Kulacki
Ecotoxicology
Aquatic ecology
plastic pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,138
676
0.594
* Total Citation Counts Rankings
Ranking Based On Selection :8
United States
Josue F Martinez Hardigree
Surfaces & Interfaces
Microfabrication
Organic Semiconductors
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,098
731
0.666
* Total Citation Counts Rankings
Ranking Based On Selection :9
United States
Brian D Drollette
Environmental Forensics
Environmental Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
822
521
0.634
* Total Citation Counts Rankings
Ranking Based On Selection :10
United States
Matthew A Pooley
Quantum Information
Quantum Optics
Semiconductor Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
593
246
0.415
* Total Citation Counts Rankings
Rankings
133,620
United States
51,053
1
Ranking Based On Selection: 1
Paul D Boehm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,668
1,118
0.146
Environmental chemistry
natural resource damage assessment
environmental forensics
ecological risk
* Total Citation Counts Rankings
Rankings
174,631
United States
64,072
4
Ranking Based On Selection: 2
Anne Fairbrother
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,926
1,489
0.251
Ecotoxicology
Wildlife health
Ecological Risk Assessment
* Total Citation Counts Rankings
Rankings
218,713
United States
77,304
7
Ranking Based On Selection: 3
John Desesso
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,703
1,313
0.279
Developmental Biology
Teratology
Reproduction
Toxicology
* Total Citation Counts Rankings
Rankings
294,573
United States
99,318
12
Ranking Based On Selection: 4
William G Hardin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,372
2,341
0.694
Defense
Surface Science
Prototyping
Strategy
Tactics
* Total Citation Counts Rankings
Rankings
474,195
United States
148,657
25
Ranking Based On Selection: 5
Sean F Ryan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,817
1,547
0.851
Risk Assessment
Genetic Engineering
Genomics
Citizen Science
Entomology
* Total Citation Counts Rankings
Rankings
586,969
United States
178,169
33
Ranking Based On Selection: 6
William Goodfellow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,306
841
0.644
* Total Citation Counts Rankings
Rankings
636,015
United States
190,696
37
Ranking Based On Selection: 7
Konrad Kulacki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,138
676
0.594
Ecotoxicology
Aquatic ecology
plastic pollution
* Total Citation Counts Rankings
Rankings
648,979
United States
193,932
39
Ranking Based On Selection: 8
Josue F Martinez Hardigree
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,098
731
0.666
Surfaces & Interfaces
Microfabrication
Organic Semiconductors
* Total Citation Counts Rankings
Rankings
753,394
United States
219,213
53
Ranking Based On Selection: 9
Brian D Drollette
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
822
521
0.634
Environmental Forensics
Environmental Chemistry
* Total Citation Counts Rankings
Rankings
864,733
United States
243,644
61
Ranking Based On Selection: 10
Matthew A Pooley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
593
246
0.415
Quantum Information
Quantum Optics
Semiconductor Physics