Sonia March Nevis (†), PhD, is co-founder of the Gestalt International Study Center. She practiced and taught Gestalt and family therapy concepts worldwide for many years. She was a founder of the Gestalt Institute of Cleveland where she created the Center for Intimate Systems, devoted to the training of couples and family therapists. Sonia is the primary contributor to the development of the Cape Cod Model, and was the founder and senior faculty member of the Cape Cod Training Programwhich she taught for over 35 years. Sonia is now retired, living in the Boston area.