"In fact, Hayashi (2025) documents just such a nonlinear relationship between aging and growth, where countries with above-replacement fertility seem to benefit from lower birth rates, but countries with below-replacement fertility seem to do worse when their birth rates fall even further.12
External validity and nonlinearity are big problems in much of growth economics, development economics, economic history, and so on (and often in other fields too)."
Framing: assertive ·
First seen: 2026-08-24 ·
Last seen: 2026-08-24 ·
Spread: 1 articles