كليدواژه :
ميل نهايي به مصرف , درآمد دايمي نسبي , انتظارات تطبيقي , توزيع ناعادلانه درآمد , اقتصاد ايران
چكيده لاتين :
Marginal propensity to consume (MPC) in income groups has a great importance in
macroeconomic policy making. But due to some restrictions, such as lack of direct
data for income and consumption groups in Iranʹs statistical yearbooks, estimation of
MPC for income groups has not been done yet. The purpose of this study is to
estimate the MPC for income groups by using the relative permanent income
hypothesis (RPI), introduced in recent economic literature. Also in this research, the
effects of income distribution on MPC of income groups will be analyzed. To this
end, ordinary least square (OLS) method is used during 1982-2006 period. Study
results confirm a significant relationship between MPC and RPI. According to
estimates, MPC for low, medium and high income groups is 0/995, 0/84 and 0/7,
respectively. Short run estimate of MPC shows that with increase of MPC for one
income group, the MPC for another income group will decline. Among other result
in this study is that in Iran economy, unfair (fair) distribution of income, will not
decrease (increase) consumption enough to increase (decrease) saving to optimal
level.
