Predictingthe ability of earnings in.many financial situations is a
crucial matter. consequently, many financial and accounting
researches are designed to uncover financial variables and indices that
have had significant relationship with earnings. Studies of Ball, Ross
&Watts (1979), Freeman, Ohlson & Penman (1982) and other similar
studies are done in this regard. The main important purpose of this
study is to find the relation between value added data (including
Economic Value Added and Cash Value Added) with earnings. In this
regard, the relationship between changes in earnings and changes in
economic value added and cash value added, for manufacturing
companies of Tehran Stock Exchange (TSE), was examined during
the period of 1996 to 2002. Regression method and OLS technique
Were used in order to test the hypotheses of this research.
The results illustrate that there is a significant relationship between
earnings changes and Economic Value Added" changes in all studied
companies, regardless of the type of their industries. However, this
relationship has been proved in all industries, except for equipment
and automobile manufacturings In other hands, the results show that
relationship between earnings" changes and cash Value Added"
changes is not significant in all of studied companies, regardless of
their industry type and their related industries.