Hojat Parsa - Department of Economics, Persian Gulf University, Bushehr, Iran.
Hadi Keshavarz - Department of Economics, Persian Gulf University, Bushehr, Iran.
Maryam Ashouri - Department of Economics, Persian Gulf University, Bushehr, Iran.

Economists and policymakers are interested in how government spending affects economic performance. The purpose of this study is to examine the effect of government capital expenditures by component on the GDP of Iran's provinces between ۲۰۱۱ and ۲۰۱۹ using a Bayesian approach. To do so, after estimating over ۵۰۰,۰۰۰ regressions and averaging the Bayesian model's coefficients, the five sub-categories of industry, judiciary, energy, health and information and communications technology were identified as the most effective sub-categories of government capital expenditures on provincial GDP. Then, a hierarchical Bayesian panel model was specified and estimated to determine the extent to which and how each of these subsections affects the provinces' GDP. Monte Carlo simulations using Markov chains indicate that while judicial and health expenditures reduced production during the study period, expenditures on industry, energy, information and communications technology increased production in Iran's provinces.

Gross domestic product (GDP), Government capital expenditure, Bayesian approach