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Validation Of The Item-Attribute Matrix In Timss-Mathematics Using Multiple Regression And The Lsdm, Lin Ma

Electronic Theses and Dissertations

For many cognitive diagnostic models, the item-attribute matrix (or Q-matrix) is an essential component which displays the relationship between items and their latent attributes or skills in knowledge and cognitive processes. However, it is a challenge to develop an effective Q-matrix.The purposes of this study were (1) to validate of the item-attribute matrix using two levels of attributes (Level 1 attributes and Level 2 sub-attributes), and (2) through retrofitting the diagnostic models to the mathematics test of the Trends in International Mathematics and Science Study (TIMSS), to evaluate the construct validity of TIMSS mathematics assessment by comparing the results of …

Understanding The Leadership Capacity And Practice Of Assistant Principals, Thomas Lee Morgan

Electronic Theses and Dissertations

The purpose of this study was to explore the leadership capacities and practices of assistant principals. The research also sought to determine what relationships existed between capacity and practice and to see if there was a difference based on experience, context and personal characteristics.

Since the majority of principals first serve as assistant principals, their work and experiences as assistant principals will have significant consequences (Kwan, 2009). The literature has long held and continues to challenge the notion that the role of assistant principal is adequate preparation for the principalship (Chan, Webb, & Bowen, 2003; Harris, Muijs, & Crawford, 2003; …