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      • Open Access Article

        1 - To study the effect of audit market concentration on auditors' job stress and audit quality of Tehran Stock Exchange (TSE) Listed Companies
        Farhan Bengoriz narges Khosravipoor Nurooz Noroolahzadeh
        Audit market concentration causes to decrease the scope of companies' au-thorities for selecting the audit institutions but instead it increases the power of auditors' market that it turns, leads to a decrease in quality and an increase in auditors' stress. The purpose More
        Audit market concentration causes to decrease the scope of companies' au-thorities for selecting the audit institutions but instead it increases the power of auditors' market that it turns, leads to a decrease in quality and an increase in auditors' stress. The purpose of the present research is to study the effect of audit market concentration on auditors's job stress and audit quality of Tehran Stock Exchange (TSE) Listed Companies performed on a total of 97 companies between the years of 2013-2017. In order to evaluate the audit market concentration, the ratio of company's audit fees to total industry audit fees was used. The Accruals Quality model was also used to evaluate the audit quality. The results of the study showed that the audit market concentration had a negative and significant effect on the audit quality so that with the increase in audit market concentration, the audit quality is decreased. Also it was found that the audit market concentration had a posi-tive and significant effect on the auditors' job stress: it means that the in-crease of concentration on audit market as a result of time pressure can in-crease the auditors' job stress and thus the risk of financial statement assess-ment. Manuscript profile
      • Open Access Article

        2 - Investigating the Relationship between Political Uncertainty and Market Irregularities: With Emphasis on the Risky Information Environment
        Hossin Sharifirad negar Khosravipoor sina kheradyar Mohammadreza Vatanparast
        investors and managers are always faced with uncertainty in the information environment, which uncertainty can be due to factors such as the synchronization of stock returns, extraordinary fluctuations in stock returns and the number of equations. The purpose of this st More
        investors and managers are always faced with uncertainty in the information environment, which uncertainty can be due to factors such as the synchronization of stock returns, extraordinary fluctuations in stock returns and the number of equations. The purpose of this study is to investigate the political uncertainty caused by the size of the firm under the influence of risky information environment, the irregular behavior of accruals anomaly and the anomaly behavior of the cost of normal stock equity of companies. For this purpose, the data of 99 companies listed on the Tehran Stock Exchange and Iran TSETMC during the years 2009 to 2019 were examined and tested through combined data. The results showed that the political uncertainty caused by the firm size affected the concurrency stock returns with the optional accrual anomaly behavior and the cost of normal stock equity behavior of companies has a positive and signification relationship. The results also showed that the political uncertainty caused by the firm size is affected by the extraordinary fluctuation of stock returns with the optional accrual anomaly behavior and the cost of normal stock equity behavior of companies has a positive and signification relationship. In addition, the political uncertainty caused by the firm size is affected by the number of equations with the optional accrual anomaly behavior and the cost of normal stock equity behavior of companies has a positive and signification relationship. Manuscript profile