Investigating the relationship between changes in value relevance of accounting information and moving toward INAS (Iran National Accounting Standards)

Value relevance is being defined as the ability of information disclosed by financial statements to capture and summarize firm value. Codification of accounting standards is one of the cases that can have an effect on accounting information. The aim of this research was to investigate the relationship of accounting information relating to the national standards of accounting. In this research we used combinational Regression and panel methods to investigate value relevance of accounting information by using of information related to earnings and balance sheet and 117 samples of companies listed in Tehran Stock Exchange during 4 years (from2009 to 2012). It was concluded that there is a meaningful and positive relationship between changes in the value relevance of accounting information related to earning and balance sheet and moving toward INAS (Iran National Accounting Standards). Also we found that there is not any