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講座名稱 項目反應理論模型在政治學的應用:以V-Dem (Varieties of Democracy)計畫為例
主講人 王奕婷 
講座日期 2017-04-14
講座時間 13:10-15:10
講座地點 社科院北棟2樓心理學系階梯教室
英文演說
主辦系所 心理學系
備註  演講相關內容如下:

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時間:4/14(五)1310

地點:社科院北棟2樓心理系階梯教室

講題:項目反應理論模型在政治學的應用:以V-Dem (Varieties of Democracy)計畫為例

個人CV(如附件)

 王奕婷是成功大學政治系的助理教授,目前也協助 Varieties of Democracy (V-Dem) 計畫 (University of Gothenburg, Sweden) 的研究。她於2013年在美國的Duke University 政治系獲得博士學位,研究興趣包含政黨政治、國會、民主化、以及量化研究方法。

演講摘要:The data produced by the Varieties of Democracy (V-Dem) project contains ordinal ratings of a multitude of country-level indicators across space and time, with multiple experts providing judgments for each country-year observation. We use an ordinal item response theory (O-IRT) model to aggregate multiple experts' ratings. The V-Dem data provide a challenging domain for such models because they exhibit little cross-national bridging. That is, few coders provide ratings for multiple countries, making it difficult to calibrate the scales of estimates cross-nationally. In this paper, we provide a systematic analysis of the issue of bridging. We use simulations to explore how much bridging one needs to achieve scale identification when coders' thresholds vary across countries and when the latent traits of some countries lack variation. In addition, we analyze the determinants of expert reliability. We do not find that gender, education level, or political ideology consistently predict reliability. However, experts who mainly code the country in which they reside tend to be more reliable, as are experts who reside in democratic countries.

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敬請準時出席,謝謝。

 
相關資料下載 cv_wang_20170329.pdf