Andreas Forø Tollefsen

Senior Researcher

Andreas Forø Tollefsen
Work phone: (+47) 22 54 77 84
Mobile phone: (+47) 930 83 003

Research Interests

I received my Ph.D. in Human Geography from the University of Oslo in 2016. Today, I work as Senior Researcher at the Peace Research Institute Oslo (PRIO) and associated researcher at the Norwegian Defence Research Establishment (FFI). 

My current work focuses on the local causes and consequences of armed conflict using spatial analytical methods of civil wars. While much of the previous literature focus on country-level analysis, my focus is on the sub-national and disaggregated quantitative studies. Spatial analytical methods are central in this work. I am also researching aspects related to protection of civilians and the interaction between society and its environment.

I have developed the PRIO-GRID dataset (, which is a spatial data framework for georeferenced data for the study of armed conflicts. In addition, I teach Geographic Information Systems (GIS) at the University of Oslo. I have also carried out peer reviews for American Journal of Political Science, Political Geography, International Interactions, Journal of International Relations and Development, International Studies Quarterly, Journal of Peace Research, Conflict Management and Peace Science and Norwegian Journal of Geography. Until 2016, I served as management committee member in the EU Cooperation in Science and Technology (COST) network "European Network of Conflict Research" (ENCoRe).


Working Experience

Senior Researcher, PRIO, 2016 - present.

Associated Researcher, Norwegian Defence Research Establishment (FFI), 2016 - present.

Ph.D. Student, Human Geography, University of Oslo, 2011 - 2016.

Researcher, Centre For The Study of Civil War, PRIO, 2010 - 2016.

Research assistant, Centre For The Study of Civil War, PRIO, 2008 - 2010.


Ph.D. in Human Geography, University of Oslo, Defended November 4, 2016. Title of the Dissertation: "Local Dynamics of Civil War". Download here: Tollefsen_PhD_Avhandling.pdf

M.A. in Geography, Norwegian University of Science and Technology and Peace Research Institute, Oslo, 2008 - 2010.

B.A. degree in Geography from the Norwegian University of Science and Technology, 2005 - 2008.


Stuart A. Bremer Graduate Travel Award 2009.


PRIO started tracking events online in 2007. This listing is not complete. Past events may be mentioned in our news archive.

All Publications

Peer-reviewed Journal Article

Wig, Tore & Andreas Forø Tollefsen (2016) Local institutional quality and conflict violence in Africa, Political Geography 53: 30–42.
Tollefsen, Andreas Forø & Halvard Buhaug (2015) Insurgency and Inaccessibility, International Studies Review 17(1): 6–25.
Tollefsen, Andreas Forø (2013) PostGIS 2.0 og Raster, Kart og Plan 73(3): 159–164.
Tollefsen, Andreas Forø; Håvard Strand & Halvard Buhaug (2012) PRIO-GRID: A Unified Spatial Data Structure, Journal of Peace Research 49(2): 363–374.
Buhaug, Halvard; Kristian Skrede Gleditsch; Helge Holtermann; Gudrun Østby & Andreas Forø Tollefsen (2011) It’s the Local Economy, Stupid! Geographic Wealth Dispersion and Conflict Outbreak Location, Journal of Conflict Resolution 55(5): 814–840.

Master Thesis

Tollefsen, Andreas Forø (2010) Weights of Evidence Model and Onset of Civil War - Favourability Analysis and Evaluation. MA thesis, Department of Geography, Norwegian University of Science and Technology, Trondheim.

Conference Paper

Østby, Gudrun; Henrik Urdal; Andreas Forø Tollefsen; Andreas Kotsadam; Ragnhild Belbo & Christin Marsh Ormhaug (2015) Armed conflict and maternal health care Micro-level evidence from Sub-Saharan Africa., presented at the Annual Convention of the American Political Science Association, San Francisco, CA, 3–6 September.
Tollefsen, Andreas Forø 2011 Rough Rebels and Tough Terrain: A Local Analysis of Inaccessibility and Civil War, presented at 11th Jan Tinbergen European Peace Science Conference, , 27–29 June.
Tollefsen, Andreas Forø 2011 PRIO-GRID: A Unified Spatial Data Structure, presented at Workshop: Using Satellite Images in the Analysis of Conflict and Economic Development, , 9 February.
Tollefsen, Andreas Forø 2010 PRIO-GRID: Quadrat Sampling for Conflict Researchers, presented at Bridge over Troubled Water: Bridging Methodological Innovations with Theory Progress on Civil War, , 8 September.
Tollefsen, Andreas Forø 2009 Predictive Probabilistic Modeling of Conflicts, presented at Peace Science Society (International), , 21 November.
Tollefsen, Andreas Forø 2009 Predictive Probabilistic Modeling of Conflicts using Geographical Information Systems, presented at Jan Tinbergen European Peace Science Conference, , 29 June.