Juan Masullo J.

Political Scientist

(and passionate rock climber)

I'm an Assistant Professor at the Institute of Political Science at Leiden University. My research employs a variety of methods to study social processes of political and criminal violence, especially in Latin America.



I am an Assistant Professor at the Institute of Political Science, Leiden University. I also serve as Research Associate at the Changing Character of War Centre, University of Oxford.

My research combines multiple types of  methods and evidence, often involving extensively fieldwork, to study complex social processes in contexts affected by political and criminal violence. I'm particularly intrigued by the decision-making processes underlaying the behavior of individuals and communities living in the midst of armed conflict. I'm also interested in the drivers of peoples' preferences and attitudes towards different policy strategies to deal with violence and crime. I have been exploring these issues in different countries affected by civil war and organized crime, including Colombia, Mexico and Brazil. 

Before joining Leiden University, I was a Lecturer at the Department of Politics and International Relations (DPIR) and an Associate Member at the University of Oxford, a Postdoctoral Fellow at the Bremen International Graduate School of Social Science (BIGSSS) and a Research Fellow at the Program on Order, Conflict and Violence (OCV), Yale University. I completed my PhD at the European University Institute.  

For my full CV click [ here | updated Sept 2020]

You can reach me at



Department of Politics and International Relations
Manor Road Building (Room 162)
OX1 3UQ | Oxford, UK



“The Dharma Gates are infinite; I vow to enter them all.”

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