1. Professor, University Psychiatric Services (UPD), Department of Social and Community Psychiatry.
2. Private Practice, Brookline, Massachusetts, Associate Clinical Professor of Psychiatry, Harvard Medical School, USA.
3. Associate Professor of Psychology, The Catholic University of America (CUA), Department of Psychology, Washington, DC, USA.
4. Private Practice, Windsor, Canada.
5. Professor of Psychology, Department of Psychology, Bar-Ilan University, Ramat-Gan, Israel.
6. Geriatric Department, Zieglerspital, Bern, Switzerland
7. University of Economics, St. Gallen, Switzerland
8. Professor of Counselling Psychology, University of British Columbia, Canada
9. Research Fellow, Faculty of Philosophy, Div. of Psychopathology, University of Zurich, Switzerland