Thomas Costello
Professor | American University
Thomas Costello is an Assistant Professor of Psychology at American University. He studies where political and social beliefs come from, how they differ from person to person–and, ultimately, why they change–using AI and the tools of personality, cognitive, clinical, and political science. He received his PhD in Psychology from Emory University in 2022 and completed his postdoctoral fellowship at MIT in 2024.
NEWs & publications
Frontier LLMs Attempt to Persuade into Harmful Topics
August 21, 2025
attempt-to-persuade-eval
It's the Thought that Counts: Evaluating the Attempts of Frontier LLMs to Persuade on Harmful Topics
its-the-thought-that-counts-evaluating-the-attempts-of-frontier-llms-to-persuade-on-harmful-topics
It's the Thought that Counts: Evaluating the Attempts of Frontier LLMs to Persuade on Harmful Topics
June 3, 2025
its-the-thought-that-counts-evaluating-the-attempts-of-frontier-llms-to-persuade-on-harmful-topics
Frontier LLMs Attempt to Persuade into Harmful Topics
attempt-to-persuade-eval
