https://www.edweek.org/advertise/quiz/quiz-yourself-how-much-do-you-know-about-the-principal-persona?cred_quest_id=623408&cred_answ_id=1446037
Quiz Yourself: How Much Do You Know About The Principal Persona?
Oct 27, 2025 - The principal is a key player when it comes to purchasing. Test your knowledge of this key buyer persona and see how your results stack up with your peers.
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https://medicine.yale.edu/lab/schlessinger/biography/
About the Principal Investigator | Schlessinger Lab
Joseph Schlessinger has been the William H. Prusoff Professor and Chairman of the Department of Pharmacology at Yale University School of Medicine since 2001.
about the principalinvestigatorlab