Measuring dynamic conjectural variation and market power in Iran’s printing industry

The main purpose of This paper is to evaluate The market power of printing industries by employing conjectural variation approach. To meet this ends the seasonal data of 2-digit ISIC code over the periods of 1996-2014 were used. Moreover, in this study using demand, supply and optimality or equilibrium condition, conjectural variation and market power, both for ststic and dynamic trerm were evaluated. In this article the static and dynamic models using two stages least squares (2SLS) and vector error correction (VECM) methods have estimated respectively. The results indicate that in static model conjectural variation and market power are very low and significant so the competitive behavior exist in Iran’s printing industry. Moreover the results of dynamic model showed that in the short run, firms have competitive behavior, but  in long run they follow cooperative behavior which in turn  led to market power in this industry.