Ignacio Arana Araya (www.ignacioarana.org) is an Assistant Professor of Political Science at Carnegie Mellon University. He specializes in the study of political elites by analyzing how the personality traits and other individual differences of heads of government impact executive governance. His research also examines the impact of political institutional variation across countries, with an emphasis on Latin America. His first book, Presidential Personalities and Constitutional Power Grabs in Latin America, 1945-2021, is forthcoming from Oxford University Press. He is currently writing the book The Psychology of Presidents, under contract with Cambridge University Press. His work has been published in leading journals such as The American Journal of Political Science, The Journal of Politics, Political Psychology, Democratization, Journal of Legislative Studies, Latin American Politics and Society, Journal of Law and Courts, Latin American Perspectives, América Latina Hoy, Revista de Ciencia Política, Estudios Internacionales, Bolivian Studies Journal, and Política. He has also contributed book chapters published by Springer, FLACSO, and Oxford University Press.