My scholarly efforts focus on applied issues in educational measurement and testing. At some level, the problems I have studied all relate to improving the validity and interpretability of test scores. Most of my recent research has centered on aspects of test security, and most specifically, detection of cheating on tests. I conduct studies developing and evaluating a variety of statistical methodologies for detecting answer copying, item preknowledge, and test tampering. I also focus on developing best practices for conducting, implementing, and reporting on security analyses.
