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A Global Model for Forecasting Political Instability
Author(s) -
Goldstone Jack A.,
Bates Robert H.,
Epstein David L.,
Gurr Ted Robert,
Lustik Michael B.,
Marshall Monty G.,
Ulfelder Jay,
Woodward Mark
Publication year - 2010
Publication title -
american journal of political science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.347
H-Index - 170
eISSN - 1540-5907
pISSN - 0092-5853
DOI - 10.1111/j.1540-5907.2009.00426.x
Subject(s) - polity , autocracy , instability , democracy , political instability , politics , econometrics , measure (data warehouse) , economics , political science , computer science , physics , mechanics , database , law
Examining onsets of political instability in countries worldwide from 1955 to 2003, we develop a model that distinguishes countries that experienced instability from those that remained stable with a two‐year lead time and over 80% accuracy. Intriguingly, the model uses few variables and a simple specification. The model is accurate in forecasting the onsets of both violent civil wars and nonviolent democratic reversals, suggesting common factors in both types of change. Whereas regime type is typically measured using linear or binary indicators of democracy/autocracy derived from the 21‐point Polity scale, the model uses a nonlinear five‐category measure of regime type based on the Polity components. This new measure of regime type emerges as the most powerful predictor of instability onsets, leading us to conclude that political institutions, properly specified, and not economic conditions, demography, or geography, are the most important predictors of the onset of political instability.