The Effect of Population on Economic Growth in Framework of Product Function

Population with their subjects is one of the basic issues in total of demographic theories. There are completely different theory about relationship between population and economic growth because human is one hand as a consumer and other hand as a product input.
Iran will be examined as a case study in (1960-2011). The methodology to estimate empirical results will be Autoregressive Distributed Lag (ARDL) technic that is based on theoretical model in economics whereas production is function of capital and population. The model is estimated via software.
The dynamic equations and long-term results showed that the total estimated coefficients have significant effect on economic growth that is in accordance with theoretical expectations.
Error correction model results indicate that 76 percent of the imbalance in economic growth in each period adjusted to the long-term relationship.
The results showed that capital and population in the short and long run affect positively on economic growth, but the years when Iran was involved Islamic Republic Revulsion has negative effects on it. Therefore, population with correct mixed physical capital lead country to obtain more GDP that is main factor to develop.