The Investigation of Price Setting Models Compatible With the Economy of Iran

In this paper, for evaluating the price setting model compatible with Iran's economy data, sectoral inflations are decomposed into macroeconomic and idiosyncratic shocks using a factor model. Based on the results, there is a significant difference in sectoral price responses to macroeconomic and idiosyncratic shocks. Some initial price setting models such as Calvo model cannot explain the heterogeneity price behavior of macroeconomic and idiosyncratic shocks. Two theoretical price-setting models that are able to explain this finding are rational-inattention model and multiple sector model with sticky prices. Using the results obtained from the factor model and other statistical characteristics of sectoral inflation, the frequency of price changes has little contribution to explaining the changes in size and the speed of response of prices to macroeconomic shock. Moreover, the idiosyncratic component is negatively correlated with the volatility of the common component. These findinges can not support a multi-sector model with sticky prices. Because this model predicts that the price response to the macroeconomic shock in a sector that has a relatively high price change frequency should be greater because the pricing evolution process is performed faster. On the othe hand, the results show that among the different sectors, idiosyncratic shocks that are more volatile are less responsive to macro shocks. These findings support the rational inattention model rather than a multi sector model with sticky prices.