No News is News: Non-Ignorable Non-Response in Roll-Call Data Analysis

G. Rosas, Y. Shomer, S. Haptonstahl, “No News is News: Non-Ignorable Non-Response in Roll-Call Data Analysis”, American Journal of Political Science, 59(2), 2015. Roll-call votes are widely employed to infer the ideological proclivities of legislators. However, many roll-call matrices are characterized by high levels of non-response. Under many circumstances, non-response cannot be assumed to be ignorable. […]

Gubernatorial Effects on the Voting Behavior of National Legislators

G. Rosas and J. Langston, “Gubernatorial Effects on the Voting Behavior of National Legislators”, Journal of Politics, 73 (2), 2011. Are subnational political elites, such as governors, capable of affecting the voting behavior of national representatives even in the face of high legislative discipline? We address this question by estimating the exogenous causal effect of gubernatorial […]

Latin American Party Systems

H. Kitschelt, K. Hawkins, J.P. Luna, G. Rosas and E. Zechmeister, Latin American Party Systems, Cambridge University Press, 2010.  

Models of Nonresponse in Legislative Politics

G. Rosas and Y. Shomer, “Models of Nonresponse in Legislative Politics”, Legislative Studies Quarterly, 33 (4), 2008. Tools dedicated to inferring the ideological leanings of legislators from observed votes — techniques such as NOMINATE (Poole and Rosenthal 1997) or the item-response-theory model of Clinton, Jackman, and Rivers (2004) — rest on the assumption that the political […]

The Ideological Organization of Latin American Legislative Parties

G. Rosas, “The Ideological Organization of Latin American Legislative Parties. An Empirical Analysis of Elite Policy Preferences”, Comparative Political Studies, 38 (7), 2005. Are legislative party systems in Latin America organized along ideological lines? This article presents a cross-country analysis of legislators’ positions on a variety of issues, such as government intervention in the economy, the […]