TY - JOUR T1 - The Optimal Level of Advertising and Long-Run Equilibrium Relationship Between Advertising and Profit: The Case Study of Iranian Sepah Bank AU - Kordbacheh, Hamid AU - Mehregan, Nader AU - Soltani Nasrabadi, Mina JO - Journal of Economics Theory VL - 6 IS - 4 SP - 116 EP - 120 PY - 2012 DA - 2001/08/19 SN - 1994-8212 DO - jeth.2012.116.120 UR - https://makhillpublications.co/view-article.php?doi=jeth.2012.116.120 KW - Bank KW -profitability KW -advertising intensity KW -Dorfman-Steiner condition KW -co-integration KW -Iran AB - The existence of a long-run equilibrium relationship between advertising expenditures and sales revenues or profits suggests that firm’s decisions to fix advertising as a ratio of performance index (Dorfman-Steiner condition) might represent optimal behaviour. This study attempts to provide evidence for such a relationship between advertising expenditures and profit using a sample of monthly time series data in Sepah Bank over the period 2002-2008. The results show the existence of long-run equilibrium relationships between the bank profitability and advertising expenditure in the sample period. This suggests that in long-run the bank's advertising expenditure is in optimal level. The evidence also bears out the hypothesis of existence a two-way causation between advertising expenditures and profit of Sepah Bank in long-run. ER -