Mason Institute for Leadership Excellence
Center for the Advancement of Well-Being | The College of Humanities and Social Sciences

Leadership and Staff

Nance Lucas 

Dr. Nance Lucas

Executive Director, Center for the Advancement of Well-Being

Dr. Nance Lucas is Executive Director of the Center for the Advancement of Well-Being, Associate Professor of New Century College, and former Associate Dean of New Century College at George Mason University. Her teaching and scholarship interests focus on positive psychology and leadership, well-being, and ethics. She is co-author of Exploring Leadership: For College Students Who Want To Make A Difference (1st, 2nd, and 3rd editions), a best-selling book of Jossey-Bass Publishers, and contributing author of Leadership Reconsidered and The Social Change Model of Leadership Development. Dr. Lucas was a co-editor of the Journal of Leadership and Organizational Studies for special issues and former member of the Journal's Editorial Board.

At Mason, she is the co-founder of the Mason Institute for Leadership Excellence, the Leadership Legacy Program, and MasonLeads while also serving as the senior leadership scholar of the Leadership Legacy Program. She leads Mason's well-being university initiative in collaboration with colleagues across the institution. Dr. Lucas is an affiliate faculty member with The Gallup Organization and the Higher Education Program at George Mason University. Prior to her appointment at Mason, Dr. Lucas had previous appointments at the University of Maryland and Ohio University. Nance served as the creator and convener of the 1997 Global Leadership Week Program (a world-wide leadership program initiative spanning five continents), co-founder of the National Leadership Symposium, co-founder of the National Clearinghouse for Leadership Programs, and a past chair of the National InterAssociation Leadership Project. She served on the W. K. Kellogg Foundation Leadership Studies Project Ethics Focus Group, W. K. Kellogg Foundation College Age Youth Leadership Program Review Team and the Kellogg Forum on Higher Education National Dialogue Series Planning Team.

She received a Ph.D. in higher education with a concentration in leadership studies and ethics at the University of Maryland, College Park. Her Master's degree in college student personnel and Bachelor's degree in industrial and organizational psychology are from the Pennsylvania State University.


Tiffany Sleek

Interim Assistant Director, Mason Institute for Leadership Excellence

Tiffany Sleek currently serves as Interim Assistant Director of Executive Education at the Center for the Advancement of Well-Being, with a focus in leading and growing Mason's leadership coaching programs and cultivating a vibrant coaching alumni network. Her passions and interests emerge from the topics of organizational well-being, cultural competency, and well-being practices through the creative arts.

In April 2016 she graduated from the University of Florida Magna Cum Laude with a Bachelor’s degree in Health Education. Her undergraduate thesis focused on international students’ perspectives of well-being and the challenges of cross-cultural communication surrounding well-being concepts.

Tiffany’s work has concentrated on individual and community empowerment through health education and engagement. She has served as a wellness coordinator at a company of over 400 employees, a community health liaison in an outreach center, and as Vice President of the Alpha Lambda Chapter of Eta Sigma Gamma, a national health education honorary.

As a member of this team, she is inspired to help facilitate leadership development opportunities that generate healthy, thriving individuals and environments.

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