reza akhbary; hamid amadeh
Volume 15, Issue 59 , January 2016, , Pages 125-160
Abstract
GDP growth and unemployment rate are both important factors that characterize economies. Okun (1962) examined data about GDP and unemployment rate and found that there was a negative relationship between these two variables. After that, economists reexamined this relationship and presented it in different ...
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GDP growth and unemployment rate are both important factors that characterize economies. Okun (1962) examined data about GDP and unemployment rate and found that there was a negative relationship between these two variables. After that, economists reexamined this relationship and presented it in different forms such as difference version, gap version and production function form. Because of much debate that is done in recent years regarding the labour market, in this study with the aim of presenting scientific analysis of current conditions in Iranian economy, we used pesaran et al (2001) approach to estimate long-run and short-run Okun coefficients in an ARDL model and the data is for the period of 1974-2011. We found that there is long run relationship between variables in three models that we used. The results show that to reduse the unemployment rate to less than %10, GDP growth rate must be over %10. These results points to deterioration of current economic conditions. At the end, Analysis of Granger causality showed that there are unidirectional causality relationships in all three forms of Okun’s law.
Hassan Heydari; HamidReza Faalju; Fatemeh Karami
Volume 13, Issue 49 , July 2013, , Pages 151-176
Abstract
The price index of shares of companies accepted in the Tehran Stock Exchange (TSE) is one of the main variables in evaluating macroeconomic performance of Iranian economy. One of the factors affecting stock price index of developing countries like Iran, that has high degree of volatility, ...
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The price index of shares of companies accepted in the Tehran Stock Exchange (TSE) is one of the main variables in evaluating macroeconomic performance of Iranian economy. One of the factors affecting stock price index of developing countries like Iran, that has high degree of volatility, is exchange rate uncertainty.The main objective of this paper is to investigate the effects of exchange rate uncertainty on price index in the TSE for the period of 1994-2009 using monthly data. In this regard, first, an index of exchange rate uncertainty is calculated using EGARCH models. Then, in order to obtain the relationship between uncertainty in real exchange rate and the stock price index, Bounds test approach is applied to the relationship between level data. The results show that in both long-run and short-run, there is a negative and significant relationship between the exchange rate and stock prices. Moveover, real exchange rate uncertainty has a non-significant negative effect on stock price in short-run. In the long-run, the relationship between real exchange rate uncertainty and stock price is negative and significant. The results of Granger causality test also show that bidirectional causality exists between the real exchange rate and real exchange rate uncertainty in the short-run. While we could not find such an interactive relationship between other variables in the short-run, an indirect causality exists from exchange rate and exchange rate uncertainty to the stock price in the long-run.
