محمدرضا عبدلی

Investment is seen as one of the most important and influential factors in economic growth and development. It is directly affected by managers' approaches to decision-making because identifying the best investment opportunities to achieve ideal returns is one of the expectations that shareholders and stakeholders have of managers to reduce agency gaps. However, the emergence of managers' overconfident behavior as a foundation for psychological bias can deepen the agency gap due to overestimating project cash flows compared to their real values under inflationary conditions. This study aims to examine the effect of inflation uncertainty on the impact managerial overconfidence has on overinvestment. The statistical population consists of companies listed on the Tehran Stock Exchange (TSE). One hundred five companies were selected as the sample size by systematic removal sampling reviewed in 2011-2018. Due to its dichotomous dependent variable, this study uses probit regression to test the research hypotheses. The results indicated the significant positive effect of CEO overconfidence on overinvestment. It was also noted that inflation uncertainty strengthens the positive effect of CEO overconfidence on overinvestment. Based on these results, the CEO's decisions as a decision-maker in charge of any company, especially under inflationary conditions, can play a substantial role in future corporate investment levels. Thus, with an increase in behavioral bias, it can be assumed that the company will confront grave competitive challenges under economic conditions.

Protecting the interests of shareholders is considered one of the main pillars of any capital market, which, while increasing the level of financial transparency, prevents the loss of their interests to those in power in companies. Consistency of laws and regulations on the one hand and the effectiveness of the corporate governance system in supervising the financial and legal operations of the company is considered important factor in respecting contracts and supporting the investments of minority and majority shareholders of companies, which makes investors confident in protecting their investments. Governance structural keywords in the corporate governance system can lead to Investor Protection by arranging effective board oversight mechanisms and motivating investors to have confidence in the structures of capital market companies. The purpose of this study is to interpret Investor Protection under the existence of a Governance Civilization based on interpretive prioritization analysis. In this study, theoretical screening based on similar studies was used to identify the components (Investor Protection) and research propositions (themes of corporate governance civilization). Then, in order to determine the reliability of research components and propositions through the participation of 14 experts and experts in the field of accounting and financial management, Delphi analysis was used. In the quantitative part, the components and propositions identified in the form of matrix questionnaires were evaluated by interpretive analysis by 20 managers of the top 50 companies of the Tehran Stock Exchange in 2009. The results showed that the proposition of sociocracy is considered the most influential theme of corporate governance civilization in capital market companies, which strengthens the effectiveness of internal control as a component of protecting the interests of shareholders. This result shows that the theme of sociocracy enables corporate governance mechanisms by promoting the level of sharing and participatory discourses to increase the effectiveness of board oversight, strengthen the weaknesses of internal controls to enhance the effectiveness of control over financial performance, and enrich the capacity to build trust and confidence in the performance of companies.

The current research sets out to identify and scrutinize the impact of the CEO’s perceptual biases in judgment and economic decision-making on the reporting quality of the firms listed on the Tehran Stock Exchange. Adopting a mixed method, the present study first seeks to detect the components and indices of CEO’s perceptual biases via critical appraisal and with the special participation of 10 accounting experts. Afterwards, the rec-ognized indices are set to undergo a Delphi analysis given the mean and the coefficient of agreement. The verified indices are then adapted to the ac-counting models and analyzed in the form of research hypotheses. The re-sults of qualitative analysis using Delphi method verify the reliability of 16 indices out of 22 ones. Regarding the quantitative analysis, the association between the indices of the CEO’s perceptual biases in judgment and econom-ic decision-making, and the primary proxies of financial reporting, namely reliability and competitiveness is tested. The findings reveal that the indices of the CEO’s perceptual biases in judgment and economic decision-making exert a significantly negative effect on financial reporting reliability and competitiveness.

With increasing trade among different countries The exchange rate fluctuations, consumption, inflation, and market portfolios are considered as major risk factors in financial markets. Hence this study aimed to examine the relationship between the exchange rate fluctuations and asset returns within a theoretical and empirical model, i.e. Consumption-based Capital Asset Pricing Model (CCAPM). To this end, a basic CCAPM was extended and imported consumables were included in Epstein and Zin’s recursive utility function. The research sample encompassed eight portfolios and monthly data from 2003 to 2014. The pricing model parameters were estimated using Euler's equations and Hansen and Singleton’s generalized method of moments (GMM). An estimation of the parameters of Euler's equations indicates the risk aversion and tolerance of economic factors, low elasticity of substitution for domestic consumables and imported consumables, and high elasticity of intertemporal substitution. In the next step, using Euler’s linearized equations as asset pricing model and Fama and Macbeth's two-step regression method, the effects of exchange rate risk premium, inflation, market efficiency, and consumption growth on return premium on assets were investigated. The results indicated the positive impact of the exchange rate risk premium, inflation, and market returns on the return premium on assets.