Total 2,393,018 scientists, country 221, and institutions 24,453 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
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* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 1
Cohort studies
Neurodevelopment
Sleep
Child Development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
796
705
0.886
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 2
political science
comparative politics
elections
political behavior
political communication
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
404
238
0.589
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 3
American foreign politics
international relations
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
471
229
0.486
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 4
Social Scientist
Political Scientist
Statistician
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
331
187
0.565
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 5
Political science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
165
96
0.582
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 6
political regimes
political parties
democratization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
124
96
0.774
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 7
Climate Change
International Relations
Political Economy
Statistical Methodology
Education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
87
0.906
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 8
international relations
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
115
79
0.687
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 9
Comparative politics
comparative political economy
institutional analysis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
78
0.557
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 10
Global governance
corporate responsibility
human rights
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
65
0.442
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* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 11
LGBTQ health
sexual orientation and gender identity development
sexual fluidity
transgender youth and families
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
68
65
0.956
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 12
International Political Economy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
101
56
0.554
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 13
American Political Development
Bureaucratic Politics
Regulation
Petitions
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
82
56
0.683
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 14
Political economy
comparative political economy
comparative politics
inequality
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
53
0.654
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 15
terrorism
counterterrorism
nonviolent resistance
civil resistance
insurgency
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
53
0.736
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 16
Political Science
History
Comparative Politics
Democratization
Political Parties
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
55
50
0.909
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 17
Social and Political Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
49
0.817
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 18
Urban and security governance
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
47
0.758
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 19
American politics
racial and ethnic politics
immigration
public opinion
qualitative research methods
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
37
0.457
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 20
international relations
identity
East Asia
Chinese foreign policy
international security
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
55
37
0.673
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 21
international security
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
52
36
0.692
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 22
International Relations
Political Psychology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
35
0.854
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 23
Political Science
Global Governance
International Political Economy
International Institutions
Private Regulation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
34
0.694
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 24
Comparative Politics
Middle East Politics
Development
Identity Politics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
32
0.780
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 25
Sexual and Gender Minorities
Sexual Health
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
29
0.879
Henning Tiemeier
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
796
705
0.886
Cohort studies
Neurodevelopment
Sleep
Child Development
Pippa Norris
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
404
238
0.589
political science
comparative politics
elections
political behavior
political communication
Joseph S Nye
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
471
229
0.486
American foreign politics
international relations
Gary King
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
331
187
0.565
Social Scientist
Political Scientist
Statistician
Scott Mainwaring
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
165
96
0.582
Steven Levitsky
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
124
96
0.774
political regimes
political parties
democratization
Dustin Tingley
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
87
0.906
Climate Change
International Relations
Political Economy
Statistical Methodology
Education
Kathryn Sikkink
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
115
79
0.687
international relations
Peter A Hall
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
78
0.557
Comparative politics
comparative political economy
institutional analysis
John G Ruggie
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
65
0.442
Global governance
corporate responsibility
human rights
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Sabra L Katz Wise
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
68
65
0.956
LGBTQ health
sexual orientation and gender identity development
sexual fluidity
transgender youth and families
Jeffry Frieden
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
101
56
0.554
International Political Economy
Daniel Carpenter
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
82
56
0.683
American Political Development
Bureaucratic Politics
Regulation
Petitions
Torben Iversen|Torben Iverson
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
53
0.654
Political economy
comparative political economy
comparative politics
inequality
Erica Chenoweth
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
53
0.736
terrorism
counterterrorism
nonviolent resistance
civil resistance
insurgency
Daniel Ziblatt
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
55
50
0.909
Political Science
History
Comparative Politics
Democratization
Political Parties
Anastassia Obydenkova|Anastassia V. Obydenkova, A Obydenkova, А. Обыденкова
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
49
0.817
Social and Political Science
Daniel Egiegba Agbiboa
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
47
0.758
Jennifer Hochschild
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
37
0.457
American politics
racial and ethnic politics
immigration
public opinion
qualitative research methods
Alastair Iain Johnston
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
55
37
0.673
international relations
identity
East Asia
Chinese foreign policy
international security
Stephen M Walt
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
52
36
0.692
international security
Joshua D Kertzer
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
35
0.854
International Relations
Political Psychology
Tim Buthe
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
34
0.694
Political Science
Global Governance
International Political Economy
International Institutions
Private Regulation
Melani Cammett
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
32
0.780
Comparative Politics
Middle East Politics
Development
Identity Politics
Elizabeth R Boskey
Harvard University
Cambridge, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
29
0.879
Sexual and Gender Minorities
Sexual Health