Investigating the Impact of Financial and Trade Sanctions on the Exchange Rate in Iran (Fuzzy Approach)
Exchange rate is one of the important economic variables that are affected by various factors. Since the exchange rate in any country is considered one of the basic indicators in determining the degree of international competition and explaining the internal situation of that country's economy, with the aim of investigating the role of economic sanctions imposed on the exchange rate in Iran, this research was carried out. According to empirical studies, several visible and invisible factors have affected the exchange rate in the country; Factors that sometimes can not all be considered in one economic model; therefore, even with conventional methods, it is not possible to comment with certainty on the extent to which some of these factors affect the exchange rate. Based on this argument, in order to use an appropriate method, in order to investigate the effect of financial and commercial sanctions imposed on Iran along with other variables affecting the exchange rate in the period after the Islamic Revolution (1978-2020) from a fuzzy approach is used. The results show that severe economic sanctions with a high and strong fuzzy coefficient have had a positive and significant effect on the exchange rate in Iran. Also, liquidity, budget deficit, balance of payments, inflation and adaptive exchange rate expectations, respectively, after the severe sanctions, have had the greatest impact on increasing the exchange rate in recent years. The fuzzy coefficients obtained for the variables of oil revenues, the degree of openness of the economy, economic growth and interest rate on account of domestic investment deposit, indicate the negative effect of these variables on the exchange rate in Iran in this period.
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