STEVEN J. STEIN, PHD, is a clinical psychologist and the Founder and Executive Chair of Multi-Health Systems (MHS), a leading behavior analytics firm. His work on human performance has been featured in top media outlets worldwide. He teaches at the Directors College of Canada.
PAUL T. BARTONE, PHD, is a Visiting Research Fellow at the National Defense University's Institute for National Security Policy. During his U.S. Army career, Colonel Bartone served as the Army's senior research psychologist and deployed worldwide. He also taught leadership at West Point and at the National Defense University. Bartone has been studying hardiness, health, and performance for nearly forty years.