School vouchers are one of the most contested issues in educational policy. Yet, various survey data often yield different results on support for vouchers {Moe 2001}. Voucher opinions are better understood by looking at American people into several demographical and geographical segments....

Our mi package in R has several features that allow the user to get inside the imputation process and evaluate the reasonableness of the resulting models and imputations. These features include: choice of predictors, models, and transformations for chained imputation models; standard and binned...

Based on Chinese patent data from 1985 to 2004, this study aims to provide a comprehensive analysis of formal university–industry collaborations in China, with a specific focus on the compound effect of geographic distance and other predictors. The results show that geographic distance is...

The fundamental problem of causal inference is that an individual cannot be simultaneously observed in both the treatment and control states (Holland 1986). Propensity score methods that compare the treatment and control groups by discarding the unmatched units are now widely used to deal with...

We propose a new prior distribution for classical (non-hierarchical) logistic regression models, constructed by first scaling all nonbinary variables to have mean 0 and standard deviation 0.5, and then placing independent Student-t prior distributions on the coefficients. As a default choice, we...

The purpose of default settings in a graphic tool is to make it easy to produce good graphics that accord with the principles of statistical graphics, e.g., [Tufte, E.R., 1990. Envisioning Information. Graphics Press, Cheshire, Conn, Tufte, E.R., 1997. Visual Explanations: Images and Quantities,...

Income inequality in the United States has risen during the past several decades. Has this produced an increase in partisan voting differences between rich and poor? Copyright (c) 2010 by the Southwestern Social Science Association.