All bibliometric data utilized to devise the citation-based metrics integral to this ranking were collected on January 12, 2026. A scientist’s position within the ranking is determined by their D-index (Discipline H-index), a specialized metric that exclusively accounts for papers and citation metrics within the examined discipline, ensuring a focused and relevant assessment of research impact.
Scope of Research Considered
The ranking was constructed upon an extensive examination of 279,971 scientist profiles curated from an expansive range of bibliometric data sources, covering all academic disciplines. Specifically, for the Social Sciences and Humanities domain, approximately 1,000 scientist profiles were scrutinized.
To qualify for inclusion in the ranking, a researcher’s D-index had to meet a minimum threshold of 30, and the majority of their tier publications were required to be situated within the Social Sciences and Humanities fields. Additionally, career awards and notable achievements in this domain were factored into the evaluation.
The D-index threshold for top researchers is methodically calibrated in increments of 10 based on the estimated total number of scholars active in each discipline. This approach ensures that the top 1% of leading experts in each field are incorporated into the ranking. Further, a proximity criterion stipulates that the difference between a scientist’s general H-index and their discipline-specific D-index does not exceed 30%, thereby validating disciplinary concentration of research impact.
Additional Verification Practices
Recognizing that raw bibliometric data alone cannot serve as an absolute measure of scholarly output, the researchers behind this ranking applied meticulous manual verification processes. Each scientist’s profile was cross-correlated against publications listed in a wide array of reputable sources to validate authenticity and relevance.
While the number of publications in prominent journals and conference proceedings does not directly influence the ranking position, it remains an important secondary signal of a scientist’s contribution to their specific scientific area.
The ranking position itself is ultimately established based on each researcher’s D-index, derived from comprehensive metadata aggregated from OpenAlex and CrossRef. These databases are the most authoritative in providing comprehensive coverage of citation and publication metrics vital for rigorous bibliometric assessments.
For further details on the methodology employed in creating this ranking, including data sources, verification procedures, and analytical frameworks, interested readers are encouraged to visit our methodology page.
Research.com’s Mission and Agenda
At Research.com, our mission is to motivate researchers, enterprises, and policymakers worldwide to explore the trajectories of leading scientific experts. We aim to provide an accessible and reliable resource enabling the entire scientific community to identify and become acquainted with the foremost specialists across various disciplines, countries, and research institutions.
Through carefully curated and rigorously validated rankings such as this one, we contribute to fostering knowledge exchange, encouraging high standards of scholarly excellence, and informing strategic decisions within academia and beyond.
