برآورد هزينه هاي اجتماعي انحصار در بخش صنعت ايران

Estimation of Social Costs of Monopoly in the Industrial Sector in Iran

The purpose of this paper is estimating the social costs of monopoly in the industrial sector of Iran during the period of 1991, 1992, 1993 and also introducing different measuring methods of social costs of monopoly. The findings of this paper advocated that the amount of social costs of monopoly largely depended on the method employed by the researcher. The said costs were diminishing from 1991 to 1993. Both Cowling Mueller method and I larerger method approved this statement. Ilarerger method estimated the social costs of monopoly lower than Collin Muller method. For example by using I larr Berger method, welfare costs of monopoly in 1991 was 2.03 percent of the sales in the industrial sector, while Collin Muller method estimated these costs close to 10.25 percent.