Citation Rankings
Highly Cited Researchers
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
Radio astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,247
8,976
0.307
* Total Citation Counts Rankings
Ranking Based On Selection: 2
AGN
high-energy astrophysics
radio astronomy
radio surveys
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,748
14,421
0.539
* Total Citation Counts Rankings
Ranking Based On Selection: 3
agriculture
insecticide resistance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,917
6,788
0.325
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Exoplanets
Brown Dwarfs
Stars
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,283
6,846
0.374
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Clinical pharmacology
NPS
drug addiction
prescription drug misuse
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,046
8,469
0.469
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Atmospheric Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,478
4,623
0.319
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Plant disease epidemiology
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,798
4,095
0.297
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Evidence based health care
dementia
research impact
older people's health and wellbeing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,557
5,076
0.374
* Total Citation Counts Rankings
Ranking Based On Selection: 9
nursing
health care
older people
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,783
7,340
0.623
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Air quality
meteorology
climate interactions
atmopsheric dynamics
modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,369
5,254
0.507
* Total Citation Counts Rankings
Ranking Based On Selection: 11
policy and leadership
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,974
3,176
0.354
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Meta-Analysis
Cognition
OCD
Schizophrenia
Alzheimer's
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,790
3,938
0.448
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Behavioural addictions
substance misuse
dissociative states
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,591
4,594
0.605
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Cognitive psychology
thinking
problem solving
creative processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,423
2,209
0.298
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Human Robot Interaction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,217
3,204
0.444
* Total Citation Counts Rankings
Ranking Based On Selection: 16
HRI
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,173
3,378
0.471
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Health Psychology
Clinical Psychology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,157
2,290
0.320
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,006
3,089
0.441
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Professor of Simulation in Healthcare Education
Director of Research
Pre-hospital care
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,855
4,353
0.635
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Virology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,501
1,673
0.257
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Plant and fungal virology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,435
1,670
0.260
* Total Citation Counts Rankings
Ranking Based On Selection: 22
antiviral
antibacterial
nanoparticles
natural fibres
composites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,326
3,514
0.555
* Total Citation Counts Rankings
Ranking Based On Selection: 23
BIM
Big Data & Machine learning in construction
energy & env.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,893
5,346
0.907
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Digital Inclusion
Artificial Intelligence
adoption
innovation
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,766
2,895
0.502
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Conflict Research
Machine Learning
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,632
3,013
0.535
* Total Citation Counts Rankings
Rankings
23,338
2,049
1
Ranking Based On Selection: 1
Mark Thompson
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,247
8,976
0.307
* Total Citation Counts Rankings
Rankings
26,655
2,316
2
Ranking Based On Selection: 2
Martin Hardcastle
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,748
14,421
0.539
AGN
high-energy astrophysics
radio astronomy
radio surveys
* Total Citation Counts Rankings
Rankings
38,100
3,329
3
Ranking Based On Selection: 3
Ian Denholm
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,917
6,788
0.325
agriculture
insecticide resistance
* Total Citation Counts Rankings
Rankings
45,833
3,995
4
Ranking Based On Selection: 4
Hugh Jones
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,283
6,846
0.374
* Total Citation Counts Rankings
Rankings
46,653
4,057
5
Ranking Based On Selection: 5
Fabrizio Schifano Frcpsych
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,046
8,469
0.469
Clinical pharmacology
NPS
drug addiction
prescription drug misuse
* Total Citation Counts Rankings
Rankings
62,587
5,366
6
Ranking Based On Selection: 6
Detlef Müller
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,478
4,623
0.319
* Total Citation Counts Rankings
Rankings
66,698
5,698
7
Ranking Based On Selection: 7
Bruce Fitt
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,798
4,095
0.297
Plant disease epidemiology
climate change
* Total Citation Counts Rankings
Rankings
68,226
5,831
8
Ranking Based On Selection: 8
Bunn F
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,557
5,076
0.374
Evidence based health care
dementia
research impact
older people's health and wellbeing
* Total Citation Counts Rankings
Rankings
81,097
6,880
9
Ranking Based On Selection: 9
Claire Goodman
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,783
7,340
0.623
nursing
health care
older people
* Total Citation Counts Rankings
Rankings
94,515
7,909
10
Ranking Based On Selection: 10
Ranjeet Sokhi
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,369
5,254
0.507
Air quality
meteorology
climate interactions
atmopsheric dynamics
modelling
* Total Citation Counts Rankings
Rankings
111,424
9,128
11
Ranking Based On Selection: 11
Philip Woods
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,974
3,176
0.354
* Total Citation Counts Rankings
Rankings
114,096
9,340
12
Ranking Based On Selection: 12
Keith R Laws
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,790
3,938
0.448
Meta-Analysis
Cognition
OCD
Schizophrenia
Alzheimer's
* Total Citation Counts Rankings
Rankings
134,170
10,835
13
Ranking Based On Selection: 13
Ornella Corazza
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,591
4,594
0.605
Behavioural addictions
substance misuse
dissociative states
* Total Citation Counts Rankings
Rankings
137,485
11,046
14
Ranking Based On Selection: 14
Ken Gilhooly
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,423
2,209
0.298
Cognitive psychology
thinking
problem solving
creative processes
* Total Citation Counts Rankings
Rankings
141,683
11,336
15
Ranking Based On Selection: 15
Michael Leonard Walters
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,217
3,204
0.444
* Total Citation Counts Rankings
Rankings
142,606
11,401
16
Ranking Based On Selection: 16
Kheng Lee Koay
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,173
3,378
0.471
* Total Citation Counts Rankings
Rankings
142,930
11,423
17
Ranking Based On Selection: 17
Troop Nicholas
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,157
2,290
0.320
Health Psychology
Clinical Psychology
* Total Citation Counts Rankings
Rankings
146,227
11,656
18
Ranking Based On Selection: 18
Ben Robins
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,006
3,089
0.441
* Total Citation Counts Rankings
Rankings
149,544
11,862
19
Ranking Based On Selection: 19
Guillaume Alinier
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,855
4,353
0.635
Professor of Simulation in Healthcare Education
Director of Research
Pre-hospital care
* Total Citation Counts Rankings
Rankings
157,934
12,453
20
Ranking Based On Selection: 20
Robert Coutts
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,501
1,673
0.257
* Total Citation Counts Rankings
Rankings
159,600
12,551
21
Ranking Based On Selection: 21
Robert Coutts
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,435
1,670
0.260
* Total Citation Counts Rankings
Rankings
162,481
12,736
22
Ranking Based On Selection: 22
G Ren
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,326
3,514
0.555
antiviral
antibacterial
nanoparticles
natural fibres
composites
* Total Citation Counts Rankings
Rankings
174,435
13,541
23
Ranking Based On Selection: 23
Hafiz Alaka
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,893
5,346
0.907
BIM
Big Data & Machine learning in construction
energy & env.
* Total Citation Counts Rankings
Rankings
178,260
13,797
24
Ranking Based On Selection: 24
Jyoti Choudrie
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,766
2,895
0.502
Digital Inclusion
Artificial Intelligence
adoption
innovation
Machine Learning
* Total Citation Counts Rankings
Rankings
182,558
14,107
25
Ranking Based On Selection: 25
Jim Dale
University of Hertfordshire
Hatfield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,632
3,013
0.535
Conflict Research
Machine Learning
Astrophysics