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The JPR Best Visualization Award 2021 goes to Gaku Ito

Document Cited in Related
Vincent
DOI10.1177/00223433221085627
Date01 March 2022
Published date01 March 2022
The JPR Best Visualization Award 2021
goes to
Gaku Ito
The committee consisting of Anita Gohdes (Hertie School), Nils W Metternich (University College London), and
Yuri Zhukov (University of Michigan) has awarded the 2021 JPR Best Visualization Award to Gaku Ito (Hiroshima
University). The prize-winning publication is a research article titled ‘Why does ethnic partition foster violence?
Unpacking the deep historical roots of civil conflicts’ ( Journal of Peace Research 58(5): 986–1003). The article
explores the causal mechanisms relating ethnic partition by international borders to the risk of postcolonial civil
conflicts in Africa. The article finds that ethnic partition increases the risk of armed conflict, which is conditioned by
political discrimination and group size. Graphs are used in each section to communicate descriptive, theoretical, and
empirical findings. All figures are simple, very well designed, and aesthetically pleasing. A particular strength is the
degree to which figures are self-sufficient, through the effective use of labels, captions, and the good use of colors and
shapes. The visualizations tell a clear story, starting with the introduction of the data, displaying the main identi-
fication strategy through well executed directed acyclic graphs, and presenting the mediation analysis results in a
variety of effective figures. Furthermore, causal interaction effects are plotted in a graph that provides both the logged
and natural scale, which allows the reader to easily assess effect sizes. The committee found that this use of excellent
visualizations throughout the article demonstrates our discipline’s state of the art and therefore Gaku Ito is a truly
deserving winner of this year’s JPR Best Visualization Award.
The award is USD 500.

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