Karina G Diaz

Karina G Diaz
University of Pennsylvania | UP · Graduate School of Education

PhD

About

6
Publications
1,105
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31
Citations

Publications

Publications (6)
Conference Paper
Full-text available
In this paper, we aim to determine the influence of factors associated to student performance in two achievement tests designed for university admission (curriculum-oriented vs. competency-based). The study is part of a four-year research project-led by the University of Chile-aimed to develop new assessments tools that could be used for University...
Article
Full-text available
The impact of online math programs depends on its implementation, especially in vulnerable populations from developing countries. An existing online platform was adapted, at the request of the Chilean Ministry of Education, to exclusively include exercises previously designed and tested by a paper-based government program for elementary school. We...
Article
Objectives In this tutorial, we examine methods for exploring missingness in a dataset in ways that can help to identify the sources and extent of missingness, as well as clarify gaps in evidence. Methods Using raw data from a meta-analysis of substance abuse interventions, we demonstrate the use of exploratory missingness analysis (EMA) including...
Article
Full-text available
Historic achievement gaps in mathematics favoring male students have recently started to narrow, close, or even shift in favor of female students. Still, in many countries, male students continue to outperform their female counterparts in international mathematics assessments. Chile has one of the highest mathematics achievement gaps in the world,...
Article
Missing covariates is a common issue when fitting meta-regression models. Standard practice for handling missing covariates tends to involve one of two approaches. In a complete-case analysis, effect sizes for which relevant covariates are missing are omitted from model estimation. Alternatively, researchers have employed the so-called "shifting un...

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