テクニカルレポート Rising Longevity, Fertility Dynamics, and R&D-based Growth

Futagami, Koichi  ,  Konishi, Kunihiko

17-26pp.1 - 33 , 2017-08 , Graduate School of Economics and Osaka School of International Public Policy (OSIPP) Osaka University
内容記述
This study constructs an overlapping-generations model with endogenous fertility, mortality, and R&D activities. We demonstrate that the model explains the observed fertility dynamics of developed countries. When the level of per capita wage income is either low or high, an increase in such income raises the fertility rate. When the level of per capita wage income is in the middle, an increase in such income decreases the fertility rate. The model also predicts the observed relationship between population growth and innovative activity. At first, both the rates of population growth and technological progress increase, that is, there is a positive relationship. Thereafter, the rate of population growth decreases but the rate of technological progress increases, showing a negative relationship.

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