Michael A. Gass, PhD, LMFT, is Director of the Outdoor Behavioral Healthcare Research Center in the College of Health and Human Services at the University of New Hampshire, USA, and a licensed marriage and family therapist.  

H.L. "Lee" Gillis, PhD, is Professor and Chair of Psychological Science at Georgia College, USA, and a licensed psychologist.

Keith C. Russell, PhD, is Professor and Chair in the Department of Health and Human Development at Western Washington University, USA.