The Truth Behind East Asia’s Ultra-Low Fertility Rate

This piece nails the East Asian low fertility rate with something called the "Confucian Fertility Paradox."

In the old days, having many children meant prosperity because the odds of passing the imperial exams were so slim; more sons just meant more lottery tickets, and one winner brought glory to the whole clan. But the game has changed. The exam is now a ranking system where success depends on resource investment, not headcount. The optimal strategy flips: better to have just one or two kids and pour all your money and energy into that single child.

Korea's data is the most alarming. In 2023, the total fertility rate plummeted to 0.72, the lowest in the world; yet the private tutoring market in 2024 swelled to 29.19 trillion won, with an 87.7% participation rate among elementary students. Kids have become a "luxury," not because formula milk is expensive, but because educational competition makes every child terribly costly. What cuts deepest is that low-income Korean families are even less likely to have children, knowing full well they can't afford this arms race.

This explains why simply handing out cash doesn't work. Korea threw $37 billion at pro-natalist incentives in 2020, but the fertility rate kept falling. As long as relative rankings stay the same, parents will just funnel those subsidies into cram schools, trapping everyone in a prisoner's dilemma.

One extension: from an industrial chain perspective, the tutoring market is a classic game of "positional goods." When access to quality education becomes scarce, family spending on education creates strong negative externalities—a single family's increased investment raises the overall cutoff scores, forcing other families to follow suit. This "theater effect" shifts the market equilibrium upward without increasing total social welfare. The solution requires跳出 individual family decision-making by internalizing these externalities through taxation or institutional design, such as taxing private tutoring expenses while pairing them with childcare subsidies, enabling all families to simultaneously "disarm."

Original post: The Truth Behind East Asia's Sky-High Fertility Rates