درخت حوزه‌های تخصصی

Banking and insurance industries are the strategic pillars of every country's economy and play a key role in the economy of countries. Without financial and insurance institutions, the financial sector of the country will be no longer effective. Therefore, determining the factors affecting the returns and performance of these institutions seems necessary.  So, in this research, the efficiency and effectiveness of financial and insurance institutions and their influential factors in 18 banks and listed insurance companies in Tehran Stock Exchange were studied. To do this, the data of selected financial and insurance institutions during the period of 2009-2016 were extracted using Rahavard Novin softwareand the model was estimated using the data panel method and Eviews9.0. Before estimating the model, using the unitroot test of the Dickey Fuller, the variables stationary property were checked and confirmed,and the Jarque-Bera testwas approved for the normal distribution of variables. The results of the model estimation showed that at a significant level of 5%, the size of financial and insurance institutions, financial leverage, and the concentration ratio on their performance and returns had a positive effect, and this effect was statistically significant at 5% significancy. Also, credit risk has a negative effect on the performance and returns of these institutions and this effect is statistically significant at 5% significancy. The effect of the volume of state ownership on the performance and returns of financial and insurance institutions is negative, but this effect is not statistically significant for the returns of these institutions.

According to accounting literature, value relevance of earnings is caused by the relationship between earnings and return. Had the earning response related to negative returns exceeds positive ones, it can be concluded that management has in fact revealed the bad news via conservative methods; this influences the relationship between earnings and return, which increases the amount of value relevance of earnings. Researches show that disclosing policies (the relationship between earnings and return) of business firms are sensitive to business cycles, thus it can be argued that if the business cycle faced contraction or expansion, the reaction of earnings against negative returns would differ comparing to positive returns. The aim of this research is to assess accounting conservatism and value relevance of earnings in business cycles. The samples of this study are 100 companies listed in TSE; their information for the period of 2007 to 2016 were tested. The results from regression test demonstrate that accounting conservatism and value relevance of earnings is much higher in contractionary economic cycles comparing to any other economic cycles. This result is pursuant to Jenkins et al (2009) research