Related Experiment Video
Updated: Feb 12, 2026

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
Published on: March 2, 2011
The Emergence of Two Distinct Fertility Regimes in Economically Advanced Countries
Ronald R Rindfuss1, Minja Kim Choe2, Sarah R Brauner-Otto3
1Carolina Population Center, University of North Carolina at Chapel Hill, CB# 8120, University Square, 123 West Franklin Street, Chapel Hill, NC 27516-2524, USA.
Economically advanced nations show a fertility split: moderate (1.9) or low (1.3) period total fertility rates (TFR). This bifurcation is linked to institutional policies enabling women to balance careers and motherhood.
Area of Science:
- Demography
- Sociology
- Economics
Background:
- Since 2000, economically advanced countries exhibit a distinct bifurcation in period total fertility rates (TFR).
- Fertility levels have diverged into two main groups: moderate TFR around 1.9 and low TFR around 1.3.
- Geographically, higher TFR countries include Northern/Western Europe, Oceania, and the US, while lower TFR countries are in Central/Southern/Eastern Europe and East/Southeast Asia.
Purpose of the Study:
- To investigate the reasons behind the observed bifurcation in fertility levels among developed nations.
- To evaluate existing theories of low fertility in light of the new bifurcation pattern.
- To identify the role of institutional arrangements and policies in moderating fertility rates.
Main Methods:
- Review of major theories on low fertility.
- Comparative analysis of institutional arrangements and policies in countries with differing TFRs.
- Case study approach, including Canada as an exception.
Main Results:
- Existing low fertility theories do not account for the observed bifurcation.
- Countries with moderate TFRs (around 1.9) possess institutional structures that facilitate combining work and motherhood.
- Institutional details vary significantly, indicating multiple policy pathways to similar fertility outcomes.
Conclusions:
- The bifurcation in TFR is driven by specific institutional arrangements and policies, not by universal theories.
- Policies enabling women to integrate work and family roles are crucial for maintaining fertility near replacement levels.
- Divergent institutional structures, as seen in Canada, highlight the nuanced relationship between policy and fertility outcomes.
Related Concept Videos
Fertilization
Emerging Adulthood
In Vitro Fertilization
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
Introduction Cardiac Emergencies
Overview of Advanced Functional Groups
Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
Extraction: Advanced Methods

