Designing a model for effectiveness of the audit committee with Grounded theory based approach

The Audit Committee, as one of the main components of the corporate governance system, is the final supervisor of the financial accounting system. Following the recent financial scandals, the adequacy of the effectiveness of these committees has been severely criticized, so it is necessary to make a difference between the audit committee which is merely formal and used as a legal safeguard and tool to justify management actions with the audit committee which Effectively oversees financial reporting and control. The purpose of this study is to design a conceptual model for the effectiveness of the audit committee in Iran. The first part of the research is of qualitative type which was done using grounded theory method And the statistical population consisted of experts in the field of audit committee who through purposeful sampling a total of eighteen people were selected as participants. The central issue is the effectiveness of the audit committee, which in five dimensions, Analysis, and then according to causal conditions and intervening conditions, strategies And its consequences are analyzed and the final model is based on it.In the next step,, a questionnaire was designed and completed by 218 members of audit companies of listed companies and with Eviews statistical software Was processed. Quantitative results of the research showed that among the variables of the audit committee activity, expertise-based ability, experience-based ability, independence, characteristics of the chairman, audit authority and organizational position, motivation and commitment of the audit committee members, knowledge and attitude of the Company departments, the support of the CEO and the supervision of the stock exchange organization, There is a significant relationship whit the effectiveness of the "Audit" committee. However, between the variables of audit committee size, audit committee tenure, effective interaction and cooperation of audit committee members, effective accountability and monitoring of the board of directors, demand for accountability and stakeholder awareness and attitude, with the effectiveness of the audit committee no significant relationship was found.