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A Democratic Peace Revisited
This research paper investigates the impact of democracy measurement on the 'democratic peace' proposition, which posits that democracies rarely go to war with one another. The author compares the widely used Polity dataset with Vanhanen's Polyarchy dataset, which uses a simpler index based on electoral competition and participation. Through bivariate and multivariate analyses of conflict data from 1816 to 2002, the study finds that the choice of indicator does matter; specifically, electoral competition appears to be a stronger predictor of peace than the aggregated democracy scores. The author concludes that while different measures often correlate, they are not interchangeable and can lead to different inferences about the causes of international peace.
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Document type: Research paper