ارتباط ساختار هيات مديره با محتواي اطلاعاتي سود حسابداري

The Relationship between Board Structure and Information Content of Accounting Earnings

در اين مطالعه به بررسي رابطه ساختار هيات مديره با محتواي اطلاعاتي سود حسابداري براي دوره زماني سال‌هاي 1387-1383در ايران مي‌پردازيمو به دنبال پاسخ به اين پرسش هستيم كه؛ آيا بهبود ساختار هيات مديره باعث افزايش محتواي اطلاعاتي سود حسابداري مي‌شود يا خير؟ در تحقيق حاضر ساختار هيات مديره با استفاده از چهارمتغير، مورد بررسي قرار گرفته و محتواي اطلاعاتي سود حسابداري نيز از طريق ضرايب واكنش سود به دست آمده است. چهار متغير ساختار هيات مديره عبارتند از: اندازه هيات مديره، عضويت مديرعامل در هيات مديره، دوگانگي مسيوليت مديرعامل و استقلال هيات مديره. براي بررسي رابطه ساختار هيات مديره با محتواي اطلاعاتي سود حسابداري از مدل ارايه شده توسط استون و هريس (1991) استفاده گرديد و براي آزمون مدل مذكور ازرگرسيون خطي چند متغيره، روش حداقل مربعات تعميم يافته تابلويي و آزمون والد استفاده شده است. نتايج مطالعه نشان مي‌دهد كه متغيرهاي ساختار هيات مديره ارتباط معناداري با محتواي اطلاعاتي سود حسابداري نداشتند. واژه‌هاي كليدي:ساختار هيات مديره، محتواي اطلاعاتي سود حسابداري، حاكميت شركتي. ?

The primary objective of this study is to show that board structure affects the value relevance of earnings. The role of board structure is to reduce the conflicts of interests between shareholders and managers. Four attributes of board structure includes Board size, CEO membership, Duality and Board independence are considered in this study. These attributes are used in this study to assess the impact of board structure on information content of accounting earnings. Information dynamics models, such as the Ohlson (1995) model provide a testable pricing equation that also identifies the role non-accounting information (i.e. corporate governance) plays in determining firm value. Based on Ohlson’s (1995) model, the change in value model, as developed by Easton and Harris (1991), is modified to include the proposed interaction between board structure and earnings management. In order to hypothesis testing, the pooled GLS regression is employed as the primary technique to estimate the coefficients. These coefficients are then examined using the Wald test to find out whether the earnings response coefficients after incorporating indictors of earnings reliability are significantly different from the earnings response coefficients irrespective of any propositions. The sample was drawn from listed companies in Tehran Stock Exchange (TSE) for the years 1383 to 1387. The final sample contained 675 firm-year observations. The results reveal that board structure have no effect on information content of accounting earnings. Keywords: Board Structure, Information Content of Accounting Earnings, corporate governance.