THRESHOLD EFFECTS OF REAL INTEREST RATE ON INVESTMENT OF THE PRIVATE SECTOR IN IRAN: TESTING STIEGLITZ'S THEORY

Abstract

In this paper, Stieglitz’s theory regarding the threshold effects of real interest rate on investment of Iran's private sector during 1973-2008 is experimentally examined. The study showed that although the real interest rate directly affects on private investment in Iran, an increase of more than 2 percent in the real interest rate will reduce the private sector's investment. In other words, Stieglitz’s argument about a one-threshold level (close to zero) of the real interest rate is confirmed in Iran. Paying attention to the rate of inflation and threshold limit of influence of interest rate on monetary policies is considered the most important proposals of the present researchPrivate sector's investment, Real interest rate, Threshold effects