William Marcellino

William Marcellino
Senior Behavioral and Social Scientist; Professor of Text Analytics, Pardee RAND Graduate School


Ph.D. in rhetoric, Carnegie Mellon University

Media Resources

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Bill Marcellino is a senior behavioral scientist at RAND, professor of policy analysis at the Pardee RAND Graduate School, and lecturer at Carnegie Mellon University and Johns Hopkins University. He was trained as a sociolinguist and corpus linguist, and at RAND he develops AI applications, including RAND-Lex, RAND's proprietary text analytics suite. Marcellino teaches text analytics and natural language processing (NLP), as well as qualitative research methods. His research focuses on information as a warfighting function, AI technology application and acquisition for DoD, military resilience, and misinformation/disinformation and conspiracy theories over social media. He also helps lead RAND's AI development in speciality LLMs and LLM-enabled applications. He has also served as a U.S. Marine tank officer and enlisted rifleman. Marcellino received his Ph.D. in rhetoric from Carnegie Mellon University.

Pardee RAND Graduate School Courses

Selected Publications

Marcellino, William, Todd C. Helmus, Joshua Kerrigan, Hilary Reininger, Rouslan I. Karimov, and Rebecca Ann Lawrence, Detecting Conspiracy Theories on Social Media: Improving Machine Learning to Detect and Understand Online Conspiracy Theories, RAND Corporation (RR-A676-1), 2021

William M. Marcellino, "Talk like a Marine: USMC linguistic acculturation and civil-military argument," Discourse Studies, 16(3), 2014

Christopher Paul & William M. Marcellino, Dominating Duffer’s Domain: Lessons for the 21st Century Information Operations Practitioner, RAND Corporation (RR-1166), 2017

William M. Marcellino, "Revisioning Strategic Communication Through Rhetoric & Discourse Analysis," Joint Forces Quarterly, (76), 2016

Kavanagh, Jennifer, William Marcellino, Jonathan S. Blake, Shawn Smith, Steven Davenport, and Mahlet Gizaw, News in a Digital Age: Comparing the Presentation of News Information over Time and Across Media Platforms, RAND Corporation (RR-2960), 2019

Marcellino, William, Meagan L. Smith, Christopher Paul, and Lauren Skrabala, Monitoring Social Media: Lessons for Future Department of Defense Social Media Analysis in Support of Information Operations, RAND Corporation (RR-1742), 2017

Posard, Marek N., William Marcellino, Todd C. Helmus, and Katie Feistel, A House Reunited: Prospects for Bipartisanship in a Divided Country, RAND Corporation (PE-A2285-1), 2023

Johnson, Christian, William Marcellino, Bad Actors in News Reporting: Tracking News Manipulation by State Actors, RAND Corporation (RR-A112-21), 2021

Recent Media Appearances

Interviews: BTRtoday; CNHI News Service Online; Fox; WORT FM; The World and Everything in It