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Polity II: Political Structures and Regime Change, 1800-1986

(2 datasets; 10,446 KB)

Principal Investigator(s): Gurr, Ted Robert

Summary: Carried out under the auspices of the Data Development for International Research (DDIR) project, POLITY II was designed to develop longitudinal indicators of political structures and regime change. This file encompasses most member states of the international system from 1800 to 1986, and consists of annual codings of regimes' structural characteristics, institutional changes, and the directionality of changes on underlying dimensions of democracy, autocracy, and power concent... (view details)

Persistent URL: http://dx.doi.org/10.3886/ICPSR09263.v1

Access Notes

  • The data files in this study are set up in a non-standard format, e.g., card image, a remnant of the time when data were literally input on punch cards. Novice users may need help converting these files into a modern format before they can be used for analysis.

  • These data are available only to users at ICPSR member institutions. You will be asked to log in prior to downloading the data.

  • This study was originally provided by ICPSR. ICPSR provides leadership and training in data access, curation, and methods of analysis for a diverse and expanding social science research community.

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