Jesús Fernández-Villaverde: Global fertility rates are below replacement levels, low fertility poses challenges to welfare states, and the quality-quantity trade-off explains declining birth rates

Key takeaways

• Demographic changes, particularly low fertility rates, are crucial to the future of the welfare state.
• Global fertility rates are below replacement levels, impacting population dynamics worldwide.
• Declining fertility is a global phenomenon, not limited to developed countries.
• By 2040-2045, significant societal changes are expected due to low fertility rates.
• Misconceptions about fertility often overlook its global impact.
• The quality-quantity trade-off in economics explains declining fertility rates.
• Countries like Chile and China have seen unprecedented drops in fertility since 2013.
• Total fertility rate and completed fertility are distinct and require different timeframes for analysis.
• International fertility data can be inaccurate compared to national statistics.
• Low interest rates result in higher housing prices due to valuation effects.
• Understanding demographic trends is crucial for policy and economic planning.
• The global decline in fertility rates will have profound implications on economic structures.
• Accurate demographic data is essential for effective policy-making and research.
• The economic model linking modernization to fertility rates offers insights into global trends.
• Housing market dynamics are significantly influenced by interest rates.

Guest intro

Jesús Fernández-Villaverde is the Howard Marks Presidential Professor of Economics at the University of Pennsylvania. He directs the Penn Initiative for the Study of Markets and is a Research Associate at the National Bureau of Economic Research. His research examines macroeconomics, economic history, and demographic challenges including global population decline.

The impact of demographic changes on welfare states

Global fertility rates and their implications

• Humanity is currently below the replacement fertility rate globally.

• The planet is at 2.17 2.15… when you are talking about fertility decline most people are thinking about the US… what most people are not thinking is about Jamaica.

  — Jesús Fernández-Villaverde

• Declining fertility rates are a widespread phenomenon, not limited to developed countries.

• Fertility in Jamaica is probably around 1.4 to put it in perspective in the US it’s 1.6… it’s a sign of how widespread the declining population is worldwide.

  — Jesús Fernández-Villaverde

• Fertility rates are declining globally, including in regions like sub-Saharan Africa.
• By 2040-2045, significant societal changes are expected due to low fertility rates.

• So my view of the world is that in 2040 2045 we are going to see articles in the newspaper talking about how incredibly low fertility is in Africa.

  — Jesús Fernández-Villaverde

• Misconceptions about fertility rates often overlook their global impact.

The economic model of fertility decline

Distinguishing between total fertility rate and completed fertility

The reliability of fertility data sources

The effect of low interest rates on housing prices