Monireh Jafarpour,Dr Behnam Gilaniniay Soumehsaraei
THE PURPOSE OF THIS RESEARCH IS INVESTIGATE OF REAL EARNING MANAGEMENT AND ACCOUNTING EARNING MANAGEMENT FROM THE PERSPECTIVE OF INCOME SMOOTHING. IN THIS STUDY HAS BEEN FOCUS ON THE OPTIONAL PART OF OPERATING CASH FLOW AS REPRESENTATIVE OF REAL EARNINGS MANAGEMENT AND ALSO DISCRETIONARY ACCRUALS AS REPRESENTATIVE OF ACCOUNTING EARNINGS MANAGEMENT. FOR EXAMINE INCOME SMOOTHING ACTIVITIES AND THE RELATIONSHIP BETWEEN REAL EARNINGS MANAGEMENT AND ACCOUNTING EARNINGS MANAGEMENT ARE USED VARIABLES OF REAL EARNINGS MANAGEMENT AND ACCOUNTING EARNINGS MANAGEMENT REPRESENTATIVES THAT ESTIMATED BY MODEL OF ROYCHOWDHURY (2006) (12)AND KOTHARI ET AL. (2005) (9)AND EMPIRICAL MODELS BUILT BY BARTOV (1993) (1)AND HERRMANN (2003) (7). 100 FIRMS ACCEPTED IN TEHRAN STOCK EXCHANGE ARE USED DURING THE PERIOD 2002-2011 FOR TEST THE RESEARCH HYPOTHESIS. THE RESULTS SHOW THAT MANAGERS ARE USED BOTH APPROACHES REAL EARNINGS MANAGEMENT AND ACCOUNTING EARNINGS MANAGEMENT SIMULTANEOUSLY AND AS COMPLEMENTARY FOR INCOME SMOOTHING