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The highly anticipated annual list identifies researchers who demonstrated significant influence in their chosen field or fields through the publication of multiple highly cited papers during the last decade. Their names are drawn from the publications that rank in the top 1% by citations for field and publication year in the Web of Science™ citation index.

Dr. David L. Penn was named a ESI Clarivate Analytics Highly Cited Research in 2021 (representing the top 1% of most-cited scientists in the world in Psychology-Psychiatry from 2010-2020). He is one of 183 researchers in Psychology-Psychiatry who are on this list (out of a total of 6062 researchers worldwide).
This is the 5th year in a row that Dr. Penn has made the list.

Since 2001, the Highly Cited Researchers™ list has identified global research scientists and social scientists who have demonstrated exceptional influence – reflected through their publication of multiple papers frequently cited by their peers during the last decade. For more information, visit


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