IIF EXECUTIVE SEES INTEREST RATES DECLINING Institute of International Finance Managing Director Horst Schulmann said that his orgnaization has been forecasting further declines of interest rates in the first half this year and then a levelling off and there is no reason to change that. Speaking to reporters, the bank research group said that the increase in interest rates announced yesterday and other activity in the foreign exchange markets did not indicate a fundamental change in the outlook. Schulmann, speaking broadly about the global debt problem, said that the International Monetary Fund should increase its assistance to third world countries. The remarks come just before next week's meeting of the IMF's Interim Committee and the Joint Development Committee of the IMF and World Bank. In a letter to the committee's, the bank group said, "Commercial banks cannot be the dominant supplier of balance of payments finance." Schulmann said that IMF exposure peaked in 1985 and has declined a bit since then.