The purpose of this study was to apply two types of Differential Item Functioning (DIF), net and global DIF, as well as the framework of Differential Step Functioning (DSF) to real testing data to investigate measurement invariance related to test language. Data from the Program for International Student Assessment (PISA)-2006 polytomously scored…

Differential item functioning (DIF) can undermine the validity of cross-lingual comparisons. While a lot of efficient statistics for detecting DIF are available, few general findings have been found to explain DIF results. The objective of the article was to study DIF sources by using a mixed method design. The design involves a quantitative phase…

Unsupervised summative assessment has become a feature of the educational landscape in various educational jurisdictions around the world, including the state of Queensland in Australia. However, I suggest it is an invalid and unnecessary practice that can impact negatively on the affect of students, call for a reconsideration of its use, and…

This study introduced and demonstrated a new methodology for item and test bias studies: moderated differential item functioning (DIF). This technique expands the DIF methodology to incorporate contextual and sociological variables as moderating effects of the DIF. The study explored differential domain functioning (DDF), so that the focus of…

This study compared the different modes of evaluation at work in Greece's secondary school graduation and university admission process. The goals of the study were (1) to provide background information regarding the contribution of in-school assessment scores and external examination scores to higher education admissions decisions, and (2) to…

A new South African testing approach designed to assess potential university students' ability to cope with English-medium academic education is also designed to take into account the effects of educational disadvantagement and minimize reliance on students' content-based secondary school experiences. The approach incorporates principles from…

This booklet has been written to help persons interested in assessment of education and training programs in general and competency-based vocational education programs in particular. The following topics are covered in the individual sections: the meaning of the term "assessment"; the importance of assessment; curriculum models; percentages and…

Premodern Chinese education emphasized an intricate system of examinations used by the government to select its officials from among the "shih" (scholars). A dual tract educational system existed: state and some private schools for examination bound scholars, and private schools for others fortunate enough to receive some education. (MH)