| 1962-63 |
Assistant-in-instruction, Princeton University, USA |
| 1966-68 |
Lecturer, McMaster University, Hamilton, CANADA |
| 1973-74 |
Professor, University of Florence, ITALY |
| 1974-75 |
Professor, London School of Economics, UK |
| November 1976 |
Guest Lecturer, Society for the Promotion of Science, JAPAN |
| May 1979 |
Guest Lecturer, Cardiff University, Wales, UK |
| 1979-80 |
Lady Davis Professor, Hebrew University, ISRAEL |
| May-June 1985 |
Distinguished Professor, La Trobe University, AUSTRALIA |
| July 1985 |
Professor, University of Auckland, NEW ZEALAND |
| Jan-June 1988 |
Professor, Hebrew University, ISRAEL |
| June-August 1988 |
University of Auckland Foundation Visitor, NEW ZEALAND |
| April 1989 |
Guest Lecturer, Tinbergen Institute, Erasmus University, HOLLAND |
| November 1997 |
Professor, Université de Paris I (Panthéon-Sorbonne), FRANCE |
| Sept 1999-Aug 2000 |
Directeur de recherche, LATAPSES, Université de Nice– Sophia Antipolis/CNRS FRANCE |
| Jan-Apr 2001 |
Professor, Université de Nice, FRANCE |
| Sept -Dec 2001 |
Professor, Carleton University, Ottawa, CANADA |
| Nov 2001-April 2002 |
Directeur de recherche, LATAPSES, Université de Nice – Sophia Antipolis/CNRS FRANCE |
| 2000-06 |
Professor, Ben-Gurion University, ISRAEL |
