Abstract
This paper analyzes how population and product market competition (PMC) may interact with each other in affecting the pace of economic growth. The impact of a change in population (size or growth) and in the degree of PMC on productivity growth may vary depending on the presence of human versus physical capital investment, the way in which individuals may purposefully invest in human capital, the type of input used in the uncompetitive sector, the form of households’ intertemporal utility, and whether PMC (measured by the degree of substitutability between differentiated intermediates) is disentangled or not from the input shares in aggregate income. It is found that a growth model with human capital accumulation a la Lucas (J Monet Econ 22(1):3–42, 1988) and a continuum of degrees of intertemporal altruism can predict an ambiguous link between population and economic growth rates, in line with the available empirical evidence. The article also analyzes the conditions under which market structure (monopoly power) and population (size or growth) may be complementary to each other in the process of long-run economic growth.
Published Version
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