HoldsUp

Lyman Stone

Lyman Stone is a demographer, researcher, and writer. His published academic research focuses on demographic topics, including the effect of first births on women's employment in Nepal and Amish fertility in the United States.

63 claims checked on air: 8 context 10 contradicted 9 overstated 18 supported 18 unverified

What they said on air - contradicted

0:28:10contradictedhighBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

Across almost any metric, feminism is strongly negatively correlated with fertility.

"yes, right now, feminism, broadly construed, is pretty strongly negatively correlated with fertility. It is, on almost any metric." (said at 0:28:10)

The claim that feminism or gender egalitarianism is strongly negatively correlated with fertility 'on almost any metric' is contradicted by demographic and economic research. In cross-national comparisons of high-income countries, the relationship between female empowerment/labor force participation and fertility famously reversed around the late 20th century from negative to positive. Furthermore, demographic frameworks (such as the 'gender equity' and 'gender revolution' models) demonstrate a U-shaped relationship: while early transitions toward female public-sphere participation can depress fertility when domestic roles remain unequal, higher institutional gender equality, paternal involvement in childcare, and egalitarian gender norms are associated with higher fertility rates compared to intermediate or traditional low-fertility contexts (e.g., Southern Europe or East Asia).

0:42:10contradictedhighBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

Fertility and reproductive success are positively correlated with income and social status in humans and non-human mammals.

"Fertility is positively correlated with income and has been forever. Even in non-human primates and non-primate mammals, like social status predicts higher fertility everywhere." (said at 0:42:10)

The claim bundles two distinct assertions. While the assertion that social status predicts higher reproductive success in non-human primates (r ≈ 0.80) and traditional/nonindustrial human societies (r ≈ 0.19) is well-supported in evolutionary anthropology, the assertion that fertility is positively correlated with income 'forever' and 'everywhere' is contradicted by modern demographic history. Across modern industrialized societies following the demographic transition, empirical research consistently documents a negative relationship between income/socioeconomic status and total fertility rates across countries and households, though some recent high-income contexts show flattening or sex-specific nuances.

1:16:05contradictedmoderateBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

On the CES-D depression scale, individuals who achieve their youth-stated desired family size have the lowest depression rates, while overshooting or undershooting increases depression risk.

"It's the CES-D scale, it's a scale for depression, basically. So, how depressed are they? Are people who hit their desired family size from earlier in life, are they more depressed, less depressed? In general, there's some exceptions, but in general, the people who are the least depressed are the people who hit the number they said when they were a late teenager or young adult. If you overshoot or undershoot, you're just more likely to be clinically depressed." (said at 1:16:05)

Longitudinal research using the National Longitudinal Survey of Youth 1979 (NLSY79) directly examined the relationship between youth fertility intentions, fertility outcomes, and depressive symptoms measured by the Center for Epidemiologic Studies Depression (CES-D) scale. The study found that discordance between fertility intentions and outcomes (such as unintended childlessness or unplanned births) was not associated with increased psychological distress or depressive symptoms in women. Among men, an association with elevated depressive symptoms was observed only for unplanned births occurring in their early 30s. The claim that undershooting or overshooting youth-stated family size generally elevates depression risk across individuals is not supported by the data.

1:22:35contradictedmoderateBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

The South Korean marriage rate began rising for the first time in decades immediately following new government financial incentives.

"The marriage rate began rising for the first time in decades immediately after they put in these incentives." (said at 1:22:35)

Demographic analyses of South Korea do not support the claim that national marriage rates entered a sustained rise for the first time in decades in response to government financial incentives. Comparative demographic research indicates that South Korea remains in a stage defined by ongoing marital postponement, continued fertility decline, and rising proportions of lifetime unmarried individuals. Furthermore, empirical evaluations of South Korean fertility and family incentive programs show that governmental financial and policy interventions have not reversed long-term downward trajectories in family formation.

2:31:10contradictedhighBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

South Korea's explicit marriage bonus contributed to an increase in fertility of 0.2 to 0.3 children over 3 years, and marriage rates rose for the first time in 25 years.

"South Korea's increase in fertility in the last 3 years, which is like they've increased fertility by like 0.2 or 0.3 kids in 3 years. ... the big change they did is they created an explicit marriage bonus, and marriage rates rose for the first time in 25 years, okay?" (said at 2:31:10)

The claim is contradicted by demographic data and published literature. South Korea has not experienced an increase of 0.2 to 0.3 children per woman in its total fertility rate (TFR) over the last three years; instead, South Korea's fertility rate has steadily declined to world-record historic lows (dropping below 0.8 children per woman). Published analyses show that cash incentives, grants, and pronatalist policies have operated as limited stopgaps rather than reversing the ongoing fertility decline.

2:32:28contradictedmoderateBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

The average American father currently spends as much time on childcare as a 1950s stay-at-home mother did.

"When you look at it at like 1950s mothers, now basically the average American dad spends as much time on child care as a 1950s stay-at-home mom." (said at 2:32:28)

Historical and contemporary time-use diary analyses show that while fathers' time spent on childcare has increased over recent decades, the average American father does not spend as much time on childcare as mid-century stay-at-home mothers. Time-diary research demonstrates that maternal time with children has remained historically stable and substantial, and persistent gender gaps in childcare time remain (with mothers continuing to provide nearly double the childcare hours of fathers, a ratio of approximately 1.8:1 in recent decades). Modern fathers spend roughly as much childcare time as 1960s *employed* mothers (around 7–8 hours per week), but substantially less than historical stay-at-home mothers.

2:43:05contradictedlowBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

Population growth does not predict habitat destruction or wildlife destruction once governance quality is controlled for.

"Population growth doesn't predict habitat destruction and wildlife destruction after you add any kind of control for governance quality, which is to say all you want is good technology or good governance." (said at 2:43:05)

The claim that population growth ceases to predict habitat or wildlife destruction once governance quality is controlled for is contradicted by empirical conservation science and macro-ecological literature. Syntheses of tropical deforestation and biodiversity loss identify human population growth, agricultural expansion, infrastructure demand, and consumption patterns as fundamental drivers that operate in synergy with, rather than being erased by, institutional and governance factors.

3:26:08contradictedhighBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

Universal prophylactic use of enoxaparin in women following a first or second miscarriage would result in 2,000 to 15,000 additional live births per year in the United States.

"If all we did using clinically demonstrated effectiveness was get every person using that drug after their first miscarriage or even after their second, we would have in the US somewhere between 2 and 15,000 extra babies every year." (said at 3:26:08)

The speaker claims that using enoxaparin universally after a first or second miscarriage has "clinically demonstrated effectiveness" that would yield 2,000 to 15,000 additional live births per year in the US. Large randomized controlled trials and high-quality systematic reviews contradict this assertion. Major clinical trials—such as the international randomized controlled ALIFE2 trial—and Cochrane systematic reviews show that low-molecular-weight heparin (LMWH, including enoxaparin) does not significantly increase live birth rates or prevent miscarriage in women with unexplained recurrent pregnancy loss or inherited thrombophilia. Consequently, universal prophylactic enoxaparin after a first or second miscarriage is not clinically demonstrated to increase live birth rates.

3:27:01contradictedhighBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

Sub-replacement fertility in the United States was first directly observed in demographic data in the 1920s.

"Below-replacement-rate fertility in the US, not even controlling for mortality, just below replacement rate fertility in the US, is first directly observed in the 1920s." (said at 3:27:01)

In demographic historical records for the United States, national fertility did not drop below replacement level in the 1920s. The total fertility rate (TFR) in the 1920s remained above 2.5 births per woman (and well above the ~2.1 replacement threshold). National period fertility in the US first dropped near or slightly below replacement level during the Great Depression in the 1930s (reaching approximately 2.1 in 1933–1936), and sustained sub-replacement fertility was later directly observed beginning in the 1970s. While demographic methodologies examining replacement (such as Louis Dublin and Alfred Lotka's intrinsic rate of natural increase in 1925) were developed during the 1920s to demonstrate that crude birth rates masked underlying declines, actual sub-replacement fertility was not observed in US national data until the 1930s.

3:27:07contradictedhighBirth Rate Debate: “40% Of Girls Will Never Be Mothers”

If every married woman in the United States reproduced at the marital age-specific rates of Amish women, the US total fertility rate would still remain below three children per woman.

"if every single married woman in America today conceived at the rate of Amish women of the same age and marital status, fertility in the US would still be less than three children per woman. Okay? Because there's just not enough reproductive-age women who are married." (said at 3:27:07)

The speaker claims that if every married woman in the US reproduced at the marital age-specific fertility rates of Amish women, the total fertility rate (TFR) in the US would remain below 3.0 children per woman because there are not enough married reproductive-age women. This claim is demographically inaccurate. Demographic research on the Old Order Amish in the United States establishes that their completed marital fertility rate (ASMFR) ranges between 6 and 8 births per woman across various settlements and national datasets (Greksa, 2002; Donnermeyer & Greksa, 2021; Brauner-Otto et al., 2025). According to US Census Bureau and American Community Survey data, approximately 40% to 45% of US women aged 15–44 are currently married. If approximately 40%–45% of reproductive-age US women experienced an overall age-specific marital fertility profile equivalent to a full Amish TFR of ~6.0–7.7 children per married woman, the resulting national Total Fertility Rate contributed solely by married women would be roughly 2.5 to 3.5 births per woman. When accounting for actual US marital rates across specific 5-year age brackets—where marriage rates are highest (over 50–60%) during peak reproductive ages (25–39)—applying Amish age-specific marital fertility rates yields a TFR well above 3.0 children per woman. Thus, low US marriage rates are not sufficient to suppress total fertility below 3.0 under Amish marital fertility rates.

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