The Effect of Auditing Quality on Companies' Value Added with Emphasis on the Mediating Role of Social Responsibility

Audit quality is very important. Audit quality is one of the most important issues in auditing that laws, standards, auditing firms and academic researchers seek to determine its indicators. This affects the market value of companies and is so important that in addition to auditors and researchers, it also forces users of audited financial statements to explore reports to gain more confidence. Social responsibility affects the value creation of companies,Therefore, the purpose of this study is to investigate the effect of audit quality on companies' value added (market value added and economic value added) with emphasis on the mediating role of social responsibility in companies listed on the Tehran Stock Exchange. The statistical population of this research is all companies listed on the Tehran Stock Exchange and the statistical sample includes 101 listed companies (1010 years-company) in the period 2009 to 2019.In order to analyze the data, structural equivalence method (SEM), SPSS and Smart PLS softwares has been used. The results showed that in Tehran Stock Exchange, auditing quality has a positive and significant effect on value added(Market value added and economic value added) as well as, social responsibility. In addition, social responsibility has a positive and significant effect on the value added of companies. Another finding of the study is that social responsibility, as a mediating variable, affects the relationship between audit quality and value added of companies listed on the Tehran Stock Exchange andIts mediating role is confirmed.The results indicate thatwith increasing social responsibility, the performance of companies is greatly improved. Auditors will use these findings to play a better role in social responsibility and managers to select better economic performance criteria.