Investigating the effective factors in the growth of private sector investment in Iran

Achieving sustainable development, obtained through growth and coordination among different economic sectors, is the most important economic goal of a country and the ineffectiveness of the private sector has been a serious obstacle to this subject in recent years. This study investigates the factors affecting private sector investment and determines which variables affect the growth of private sector investment at any point in time. The dynamic averaging model (DMA) was used in order to determine the factors affecting the growth of private sector investment: As a type of variable parameters over time (TVP) models, the DMA model presents the best model for determining private sector investment at any time. The paper investigates 8 variables, analyzing quarterly time series data of the Iran Central Bank from 2001 to 2019. The results indicate that the possibility of entering the variables of exchange rate, GDP, government spending and inflation is at a high level and the probability of entering the variables of liquidity and bank facilities is at a medium level, whereas the probability of entering variables of interest rate and business environment is low