Gary Kielhofner, DrPH, OTR, FAOTA, is Professor, Head, and Wade/Meyer Chair, Department of Occupational Therapy, College of Applied Health Sciences, University of Illinois at Chicago, 1919 West Taylor Street, Room AHS 354, Chicago 60612-7249, Illinois; kelhfnr@uic.edu

Kirsty Forsyth, PhD, OTR, SROT, is Senior Lecturer, Queen Margaret University College, Edinburgh, Scotland