World Online Ranking of Best Psychology Scientists – 2024 Report
On May 9, 2024, Research.com published the 3rd edition of its annual ranking of the finest scientists in psychology. This study, which includes a list of top scholars, is intended to give the academic community additional visibility and exposure to the influential contributions made by those at the forefront of psychology research.
Furthermore, we anticipate that this report will serve as a source of inspiration for researchers, decision-makers, and entrepreneurs worldwide, encouraging them to explore the direction in which prominent specialists are progressing. This presents a valuable opportunity to learn about the foremost authorities in various research fields across nations and within diverse academic institutions and research organizations.
For the 2024 edition of the ranking, more than 9,000 scientist profiles on Google Scholar and Microsoft Academic Graph have been examined, with several indicators and metrics reviewed to consider each scientist’s inclusion in the ranking.
The D-index threshold for approving a scholar to be considered was set to 30 if most of their publications were in the field of psychology. The inclusion criteria for scholars to be considered for the ranking of top scientists are based on the discipline D-index, the proportion of contributions made within the given discipline, and the awards and achievements of the scientists.
Psychology research at the forefront of solving societal problems
Recent major research in psychology has seen significant advancements in the effectiveness of cognitive behavioral therapy (CBT) for substance abuse disorders. To better address the complex needs of individuals struggling with addiction, researchers have focused on tailoring interventions to specific substances, demographics, and co-occurring mental health conditions. This research has highlighted the importance of integrating CBT with other therapeutic modalities, such as mindfulness-based approaches and pharmacotherapy, to provide comprehensive and personalized care for individuals grappling with substance abuse.
Another area of notable research involves investigating the relationship between social media usage and suicidal ideation among young adults. Studies have explored the intricate interplay between online social interactions, mental health, and suicidal thoughts, shedding light on the potential risks and protective factors associated with social media engagement. Researchers have examined various factors, including cyberbullying, social comparison, and online support networks, to better understand how different aspects of social media use may influence individuals' psychological well-being and suicide risk.

The key findings for the 3rd edition of best psychology scientists ranking
- Scientists from the United States dominate the list, with 642 scholars included in the 2024 top psychology scientists list, which represents 64.2% of the entire psychology scientists ranking.
- The other leading countries with leading positions in the ranking are the United Kingdom (118 scientists or 11.8%), the Netherlands (50 scientists or 5.0%), Canada (47 scientists or 4.7%), Australia (42 scientists or 4.2%), and Germany (33 scientists or 3.3%).
- The top 1% psychology experts are dominated by the United States and the United Kingdom, with four scientists apiece.
- In the 2024 edition of our ranking, Harvard University still leads the ranking, with 30 scientists affiliated with that institution included in the ranking.
- The top-ranking scientist in psychology is Trevor W. Robbins from the University of Cambridge in the U.K., with a D-index of 260.
- American universities constitute 70% of the 10 top leading institutions, with the other three institutions being based in the U.K.
- The average D-index for the top 1% of scientists is 202.8 against an average of 102.91 for all 1000 scientists included in the ranking.
The full ranking for the 2024 list of best psychology scientists can be found here:
BEST PSYCHOLOGY SCIENTISTS RANKING
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What Are the Emerging Career Pathways in Psychology Research?
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What Are the Emerging Challenges and Opportunities in Global Psychology Research Collaboration?
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What Are the Key Ethical Considerations in Psychology Research?
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What Are the Key Collaborative Strategies to Enhance Psychology Research?
Emerging interdisciplinary initiatives underscore the importance of strategic partnerships to drive innovation in psychology. By integrating expertise from fields such as neuroscience, data science, and behavioral economics, research teams are developing cohesive approaches that optimize resource allocation and validate findings through multi-perspective analysis. This collaborative model enhances the rigor of studies and fosters the creation of unified frameworks to address complex mental health challenges.
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Countries with the highest number of leading psychology scientists
Scientists from the United States dominate the list, with 642 scholars included in 2024, representing 64.2% of the whole ranking, with one more additional scientist compared to last year. However, only 4 out of 10 scientists in the top 1% are from the United States this year.
The United Kingdom keeps its second spot from 2023, with 118 scientists.
The Netherlands took the third spot in 2024, which currently has 50 ranking scientists, down from 51 scientists in the previous year.
Among the top 10 countries, 8 maintained their previous ranking except for Italy and Belgium. Italy moved a notch down to rank 8 with 10 scientists, while Belgium climbed to the 7th spot, also with 10 scientists.
The rest of the top 10 include Canada (47), Australia (42), Germany (33), Switzerland (8), and Sweden (7).
Please note that the country associated with a scientist is based on their affiliated research institution according, not on their actual nationality.
Institutions with the highest number of leading scientists
In the 2024 edition of our ranking, Harvard University is the leader, with 30 scientists affiliated with the institution included in the ranking. Ranking second is King's College London, with 28 scientists; third place is occupied by the University of California, Los Angeles, with 23 scientists.
American universities and institutions constitute 70% of the top 10 leading institutions, with the other three representing the U.K. (King's College London, University of Cambridge, and University of Oxford).
Of the top 1% of leading scientists, four of 10 institutions are based in the U.S. Four institutions, including the top 2 spots, are from the U.K., and two are from Australia.
Harvard University retained its leadership in the top 10 institutions with 30 scientists. From 27 scientists in 2022, King’s College London maintained its place in the 2nd spot with 28 scientists.
The University of California-Los Angeles moved from the fourth to the third spot with 23 scientists, while Stanford University moved to the 4th spot with 22 scientists.
Reclaiming its place in the top 10 is the University of Pittsburg, ranking 10th in 2024 with 14 scientists.
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Online universities pushing the boundaries of research
Connectivity among online universities is fostering a new era of research in psychology by breaking down geographical barriers and facilitating collaboration among research scientists worldwide. Online universities are uniquely positioned to leverage digital platforms and communication technologies to connect with experts in various fields of psychology, transcending traditional limitations of physical distance. Through virtual conferences, webinars, and online forums, researchers from online universities can engage with peers from diverse backgrounds, exchange ideas, and form interdisciplinary collaborations to address complex research questions and advance the frontiers of psychological science.
Moreover, online universities offer flexible schedules and asynchronous learning environments, enabling faculty members and students to participate in research projects and collaborations without being bound by traditional academic calendars or geographic constraints. This flexibility allows researchers to contribute to ongoing studies, share data, and collaborate on publications while accommodating their individual schedules and commitments. By harnessing the collective expertise and resources of a global network of scholars, online universities are driving innovation and pushing the boundaries of psychological research, ultimately leading to a richer understanding of human behavior, cognition, and mental health.

D-index ranking – leaders, averages, and distribution
For Europe, Professor Trevor W. Robbins from the University of Cambridge, U.K., is on top of the list with a world ranking of no. 1. His D-index is 260.
For North America, Professor Terrie E. Moffitt from Duke University, United States, is ranked first in the region, with a D-index of 202. She is also listed 3rd in the world ranking.
For Oceania, Professor Richard M. Ryan from the Australian Catholic University, Australia, ranks 1st on our list of leading scientists in that region. He is also listed 5th in the world ranking with a D-index of 200.
Professor Mario Mikulincer from Reichman University, Israel leads the top list in Asia with a world ranking of 180.
No scientists from Africa and South America were ranked among the top 1000 scientists in 2024.
The average D-index for the top 1% of scientists is 202.8 against an average of 102.91 for all 1000 scientists included in the ranking.
The scholar with the lowest index value who made it to the ranking in 2022 has a D-index of 81.
The average number of published articles for the top 1% of scientists in the ranking is 685.8 against an average of 387.76 for all 1000 scholars.
You can learn more about the methodology used to create the ranking here.
About Research.com
All research was coordinated by Imed Bouchrika, Ph.D., a computer scientist with a well-established record of collaboration on a number of international research projects with different partners from the academic community. His role was to make sure all data remained unbiased, accurate, and up-to-date.
Research.com is the number one research portal for science and educational rankings. Our mission is to make it easier for professors, research fellows, and students to progress with their research and find the top experts in a wide range of scientific disciplines. Research.com is also a leading educational platform that helps students find the best colleges, academic opportunities, and career paths.
