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Open Access. Powered by Scholars. Published by Universities.®

2010

University of Denver

Educational Assessment, Evaluation, and Research

Least squares distance method

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Cognitive Diagnostic Assessment Of Timss-2007 Mathematics Achievement Items For 8th Graders In Turkey, Turker Toker Jan 2010

Cognitive Diagnostic Assessment Of Timss-2007 Mathematics Achievement Items For 8th Graders In Turkey, Turker Toker

Electronic Theses and Dissertations

This study investigated students' responses to released TIMSS mathematics items and considered what those responses might show about participants' mastery level of cognitive areas. The least squares distance method (LSDM) was used in this cognitive diagnostic analysis. There were 4,498 8th-grade students from seven geographical regions of Turkey who took TIMSS items. In this study, using the responses of Turkish students to the released math items of TIMSS-2007, an IRT analysis was also conducted to both compare results with international item parameters A Pearson correlation between these two sets of item logit positions produced a correlation of r = .82, …