The purpose of this quantitative correlational study was to determine if, and to what extent, a relationship existed between teachers' perceptions of their evaluator's instructional leadership and the teachers' evaluation scores at the middle and high school levels in one Florida school district. Ozcan's theory of teacher motivation states that…

The study established the validity and reliability of a weighted individual performance-based assessment tool within the utility scope of middle school orchestral strings. The following research questions guided this study: 1. What specific string-playing behaviors and corresponding criteria validate a weighted individual performance-based…

Despite the benefits of performance-based oral communication tests, a plethora of variables, as illustrated in Ockey and Li's (2015) model of oral communication assessment, can create construct-irrelevant variance in test scores. In relation to human participants in the oral communication tests, previous studies mostly focused on the direct effect…

This dissertation is comprised of three papers that propose and apply psychometric models to deal with complexities and challenges in large-scale assessments, focusing on modeling rater effects and complex learning progressions. In particular, three papers investigate extensions and applications of multilevel and multidimensional item response…

Self-report is currently used as an indicator of professional practice in a variety of fields, including medicine and education. Important to consider, therefore, is the ability of self-report to accurately capture professional practice. This study investigated how well professionals' self-reports of behavior agreed with an expert observer's…

Second language (L2) oral performance assessment always involves raters' subjective judgments and is thus subject to rater variability. The variability due to rater characteristics has important consequential impacts on decision-making processes, particularly in high-stakes testing situations (Bachman, Lynch, & Mason, 1995; A. Brown, 1995;…