Bachelor in Liberal Studies, Regents College, 1993. Master of Science in Management, American College, 1993. Master of Business Administration, University Wales, 1998.
Doctor of Philosophy in Sociology, University Tuebingen, Germany, 1989.
Management consultant, management trainer Rufer & Partner(s) Training GmbH Inc., Pulheim, Germany, 1990—1991. Director management training, partner Rufer & Partner(s) Seminare GmbH Inc., 1992, president, Chief Executive Officer, 1993—1997. Senior partner Rufer & Partner(s) Group, 1994—1997.
Independent consultant, management trainer, coach, 1998—2008. Professor intercultural competence Regensburg University Applied Sciences, since 2008. Lecturer in field University Passau, Germany, 1990—2007.
Member of Royal Institute Philosophy, German Sociological Association, Society Intercultural Education, Training & Research, German Simmel Association, German Philosophical Association.
Married Silvia Berthold, October 27, 2000. 1 child Annette.