Ryan Bakker - Academia.edu (original) (raw)
Uploads
Papers by Ryan Bakker
European Journal of Political Research, 2010
This research note reports on the 2002 and 2006 Chapel Hill expert surveys (CHES), which measure ... more This research note reports on the 2002 and 2006 Chapel Hill expert surveys (CHES), which measure national party positioning on European integration, ideology, and several European Union (EU) and non-EU policies. The reliability of expert judgments is examined and the CHES data are cross-validated with data from the Comparative Manifesto Project, the 2003 Benoit-Laver expert survey and the 2002 Rohrschneider-Whitefield survey. The dataset is available on the CHES website.
Electoral Studies, 2009
This paper demonstrates the relative strengths and weaknesses of SEM and Bayesian approaches to c... more This paper demonstrates the relative strengths and weaknesses of SEM and Bayesian approaches to combining different sources of data when estimating latent variables. Data on party left-right positioning collected from party manifestos and surveys of party experts, MPs and voters are used to illustrate the two techniques. Although widely used and accepted, the SEM approach is less useful than the Bayesian approach, particularly when using the latent variable in subsequent predictive estimations.
Electoral Studies, 2007
Our purpose in this article is to cross-validate expert and manifesto measures of party positioni... more Our purpose in this article is to cross-validate expert and manifesto measures of party positioning on European integration. We compare these data with each other and with measures from a European election survey and an elite survey of parliamentarians. We find that expert surveys provide the most accurate data for party positioning on European integration. In part, the errors of expert evaluations and electoral manifestos are shared. Both have some difficulty measuring the positioning of small, extreme, parties. But we also detect and explain errors that are unique to each measurement instrument.
European Journal of Political Research, 2010
This research note reports on the 2002 and 2006 Chapel Hill expert surveys (CHES), which measure ... more This research note reports on the 2002 and 2006 Chapel Hill expert surveys (CHES), which measure national party positioning on European integration, ideology, and several European Union (EU) and non-EU policies. The reliability of expert judgments is examined and the CHES data are cross-validated with data from the Comparative Manifesto Project, the 2003 Benoit-Laver expert survey and the 2002 Rohrschneider-Whitefield survey. The dataset is available on the CHES website.
Electoral Studies, 2009
This paper demonstrates the relative strengths and weaknesses of SEM and Bayesian approaches to c... more This paper demonstrates the relative strengths and weaknesses of SEM and Bayesian approaches to combining different sources of data when estimating latent variables. Data on party left-right positioning collected from party manifestos and surveys of party experts, MPs and voters are used to illustrate the two techniques. Although widely used and accepted, the SEM approach is less useful than the Bayesian approach, particularly when using the latent variable in subsequent predictive estimations.
Electoral Studies, 2007
Our purpose in this article is to cross-validate expert and manifesto measures of party positioni... more Our purpose in this article is to cross-validate expert and manifesto measures of party positioning on European integration. We compare these data with each other and with measures from a European election survey and an elite survey of parliamentarians. We find that expert surveys provide the most accurate data for party positioning on European integration. In part, the errors of expert evaluations and electoral manifestos are shared. Both have some difficulty measuring the positioning of small, extreme, parties. But we also detect and explain errors that are unique to each measurement instrument.