Polity IV Project: Dataset Users’ Manual 1 THE POLITY IV PROJECT: AN INTRODUCTION The Polity IV project continues the Polity research tradition of coding the authority characteristics of states in the world system for purposes of comparative, quantitative analysis. The original Polity conceptua l scheme was formulated and the initial Polity I. The following data resources were prepared by researchers associated with the Center for Systemic Peace and are generated and/or compiled using open source information. These resources are made available as a service to the research community. User's Manual PDF. Polity IVd Polity-Case Format, 1800-2017. Polity IV Project, Political. Polity IV Project, Political Regime Characteristics and Transitions, 1800-2018, annual, cross-national, time-series and polity-case formats coding democratic and autocratic 'patterns of authority' and regime changes in all independent countries with total population greater than 500,000 in 2018 (167 countries in 2018) (SPSS and Excel data; PDF.
State System Membership
Overview
This data set contains the list of states in the international system as updated and distributed by the Correlates of War Project. These data sets identify states, their standard Correlates of War 'country code' or state number (used throughout the Correlates of War project data sets), state abbreviations, and dates of membership as states and major powers in the international system. Version 2016 extends the temporal domain of the collection through December 2016.
Polity IV Data: Polity-Case Format, 1800-2013, Center for Systemic Peace, viewed 14th December, 2014. 2013 democray levels for countries in the world as measured by the Center for Systemic Peace's Polity IV scale. Register to create your own interactive chart. Jul 31, 2019 The index, drawing on data from the Archigos project, covers most sovereign countries from the mid-nineteenth century to the present. A battery of cross-national tests shows a positive and robust association between polity size and the institutionalization of leadership succession. This package provides a number of functions to access most datasets measuring democracy in use in the scholarly literature. At its core is a set of functions to download and standardize some widely used datasets, including Polity IV, Freedom House, Geddes, Wright, and Frantz’ autocratic regimes dataset, the Lexical Index of Electoral Democracy, the DD/ACLP/PACL/CGV dataset, and many others.
The Correlates of War project includes a state in the international system from 1816-2016 for the following criteria. Prior to 1920, the entity must have had a population greater than 500,000 and have had diplomatic missions at or above the rank of charge d’affaires with Britain and France. After 1920, the entity must be a member of the League of Nations or the United Nations, or have a population greater than 500,000 and receive diplomatic missions from two major powers.
Citation
We ask users of the data set to cite this data set as follows:
Correlates of War Project. 2017. 'State System Membership List, v2016.' Online, http://correlatesofwar.org
Data Set
The files associated with the interstate system membership data set can be obtained either individually in .csv (comma-delimited) format. In this format, values are separated by commas, with string values (e.g. state names) in quotations. The first line of each data file is a header record containing the variable names.
Questions and Feedback
This data set is hosted by Volker Krause, Eastern Michigan University; Phil Schafer, University of Michigan; Karen Ruth Adams, University of Montana. Questions about this data set may be emailed to Volker Krause at vkrause@emich.edu.
State System v2016 Codebook
Project Data Sheet
State System Membership Codebook V2016.pdf — PDF document, 91 KB (93891 bytes)
State System v2016 FAQ
State FAQ.pdf — PDF document, 90 KB (92385 bytes)
States2016
states2016.csv — text/comma-separated-values, 10 KB (10845 bytes)
Majors2016
Polity Iv Project Database
majors2016.csv — text/comma-separated-values, 1 KB
System2016
Polity Iv Project Data Users Manual 2016 17
system2016.csv — text/comma-separated-values, 293 KB (300836 bytes)