My primary research interests focus on organizational leadership, counterproductive work behavior, psychological measurement, and--especially--the intersection of those three areas. My work seeks to identify factors that contribute to leaders' effectiveness in their roles, including characteristics of both the leaders themselves and the situations in which they work. This endeavor requires examining not only factors that enhance leadership by their presence (the "bright side") but also factors that enhance leadership through their absence (the "dark side"). Therefore I have a keen interest in what some have called "destructive leadership." The twin objectives of my research program are to enhance our understanding of leadership processes and to develop interventions that organizations can use to improve their leaders' performance in measurable ways. Because measuring leadership performance is a large part of my work, I embrace a highly quantitative approach and specialize in creating multisource leadership assessment instruments, such as 360 degree tools.

Some of my papers are available in the Downloads section.

[The Downloads section is no longer being updated; please contact me directly for copies of papers.]