![]() Boehmke, Frederick J., and Paul Skinner. For example, if you use the dataset to examine the relationship between the Policy Innovativeness Score created by Boehmke & Skinner (2012) and the Policy Liberalism Score created by Caughey & Warshaw (2015), you should include the following three citations: To quickly generate these citations, see our web application or R package - both can export citations for any variable in the dataset. Thus, if you use the dataset, please cite the original data sources. This aggregated dataset is only possible because many scholars and students have spent countless hours creating, collecting, cleaning, and making data publicly available. ![]() CSV file with Core Academic Dataset (~70 variables) (.csv).CSV file with Core Policy Dataset (~100 variables) (.csv).CSV File with Complete Dataset (~3000 variables) (.csv).Our web application and R package can quickly generate citations for the specific variables that you use, create a number of visualizations (including animated maps in the app), subset the data in multiple ways, and more. The codebook includes the variable name, a short description of the variable, the variable time frame, a longer description of the variable, and the variable source(s) and notes. These variables represent policy outputs or political, social, or economic factors that may influence policy differences. states and across time (1900–2019, approximately). The Correlates of State Policy Project includes more than 3000 variables, with observations across the 50 U.S. ![]() Interactive Web Application for Online Subsetting, Visualization, and Analysis.Read more in our new paper announcing the dataset. We welcome notification of any errors, comments, and contributions of additional datasets. These cross-state and cross-time datasets are free and publicly available for academics, policy analysts, students, policymakers, and the research community. IPPSR is committed to research transparency, replication, and data reliability. In keeping with the mission of IPPSR, this project documents, updates, and distributes various datasets germane to research on pressing public policy issues. We hope this project will become a “one-stop shop” for academics, policy analysts, students, and researchers looking for variables germane to the study of state policies and politics. ![]() We have gathered more than 3000 variables from various sources and assembled them into one large, useful dataset. state policy research, tracking policy differences across the 50 states and changes over time. The Correlates of State Policy Project aims to compile, disseminate, and encourage the use of data relevant to U.S. ![]()
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