The bibliometric data utilized for devising the citation-based metrics were collected on January 12, 2026, ensuring the ranking reflects recent scholarly contributions. The core metric employed to establish each scientist's position within the ranking is the D-index (Discipline H-index), a discipline-specific variant of the traditional H-index. The D-index exclusively considers papers and associated citation metrics within the examined discipline, providing a focused and meaningful measure of a researcher’s influence in Psychology.
Scope of Research and Qualification Criteria
For the construction of the ranking, a total of 279,971 scientist profiles were examined across all disciplines, identified from a diverse range of bibliometric data sources. Specifically, 19 scientists were analyzed within the field of Psychology. To qualify for inclusion in the ranking, a scientist's D-index had to meet or exceed a threshold of 30, highlighting a substantive body of impactful research in Psychology.
In addition to this numerical threshold, a qualifying scientist must have the majority of their top-tier publications focused on Psychology. Awards and notable achievements related to the field were also taken into consideration as supporting factors in the evaluation process.
The D-index threshold is calibrated in increments of 10 depending on the total number of scholars estimated within each discipline, thereby ensuring that the top 1% of leading experts in Psychology are incorporated into the ranking. An additional validation step requires that the proximity between a scientist’s general H-index and their D-index remains 30% or less, assuring a strong alignment between their overall scholarly impact and their discipline-specific influence.
Additional Verification Practices
Research.com acknowledges that raw bibliometric data alone cannot serve as an absolute measure of a scholar’s output or impact. Consequently, all scientist profiles were subjected to rigorous manual verification. This process involved cross-correlation of publication records against a broad array of trustworthy academic sources to validate accuracy and relevance.
While the volume of publications in prominent journals and conference proceedings does not directly influence a scientist’s position in the ranking, it is recognized as a valuable secondary indicator of research productivity and contributions within Psychology.
The final positioning is established based on each researcher’s D-index, as derived from the comprehensive bibliometric data collected from OpenAlex and CrossRef—two of the most authoritative and widely recognized databases available to the research community.
We encourage readers seeking detailed insight into the methodology to visit our methodology page.
Research.com’s Mission and Agenda
The creation of this ranking aligns with Research.com’s broader mission to inspire researchers, organizations, and policymakers worldwide to observe and understand the trajectories of leading experts in their respective fields. By providing clear, credible, and transparent information on top scientists in Psychology across Greece, we aim to foster greater awareness and collaboration within the global scientific community.
Our goal is to offer an accessible platform where scientists, academic institutions, and industry stakeholders can identify and connect with leading experts, thereby accelerating innovation, resource allocation, and informed decision-making in science policy and funding.
