This article investigates the governing ideologies of the third and second plan of Development, by using Barrington Moore Jr. “Development program” Theory and also Robert Merton “Means and goals” theory, in order to show the rate of inconsistency between goals and means and also ideological conflict in these two plans.

To gain this objectivs, first. we explained social, cultural, economic and political principles of socialism and liberalism and then, used the method of content analysis for final goals, policies (middle goals), and provision (means) in these two plans. The results show that in both two plan, mostly the goals were socialistic and the means were often liberelistic.

Also the rate of inconsistency between goals and means in the second plan was less than the first plan.