International Collaboration in Peace Science

Abstract This paper examines the growth and implications of transnational collaboration in peace science—a field which uses formal and statistical models to study conflict dynamics. Using bibliometric data from 2005 to 2025 across three leading journals—Journal of Conflict Resolution, Journal of Peace Research, and Conflict Management and Peace Science—it documents authorship patterns across countries. The findings show that while the United States remains the dominant contributor, European countries such as Norway, Sweden, the United Kingdom, Germany, and Switzerland have become central to the international network. Importantly, multi-country co-authorship has expanded from roughly 10 percent of publications in 2005 to more than one-third in 2024, mirroring broader trends in political science. Regression analyses reveal that articles by international teams attract more citations, indicating that collaboration enhances both scholarly visibility and research impact. Topic analysis further suggests that greater inclusion of non-US authors contributes to wider thematic diversity. Yet, scholars from the global south remain underrepresented. The study concludes that sustaining opportunities for collaboration is essential to preserve the epistemic and practical benefits of transnational knowledge production in peace science, and to ensure that the field reflects the global nature of the challenges it seeks to address.