investigating the relationship between boards independence and firm performance with moderating role of ownership structure

the purpose of this research is to answer the question of whether the concentration of ownership can modify the relationship between board independence and corporate performance? for this purpose, 108 active companies were studied during the years1389-1393. the results of this research indicate that the independence of the board of directors on the performance of the company (roa) has no significant effect on the 95% confidence level. therefore, ownership concentration does not modify the relationship between board autonomy and corporate performance (roa). on the other hand, the independence of the board of directors (qtobin) has a negative and significant effect on the 95% confidence level. as a result of a decrease in ownership concentration will increase the effectiveness of the board of directors' equity on the company's performance (qtobin). also, according to the survey, the type of company has no effect on the relationship between the independence of the board of directors and the company's performance. as a result, a decrease in ownership concentration will increase the effectiveness of the board of directors' equity on the company's performance (qtobin). also, according to the survey, the type of company has no effect on the relationship between the independence of the board of directors and the company's performance.