Policies and interventions can raise a nation’s average IQ

Categorization

• corroborated: 2 independent passages support this claim
• XREF: connects to: Population IQ scores have risen rapidly over decades, refuting fixed-IQ claims — Harriet A. Washington, A Terrible Thing to Waste, 124; Rapid IQ gains from reduced disease burden rule out genetic explanations — Harriet A. Washington, A Terrible Thing to Waste, 945; Claiming IQ gaps are immutable functions as a self-fulfilling excuse for inaction — Harriet A. Washington, A Terrible Thing to Waste, 73 (+14 more)

Related

• Adding iodine to salt in 1924 raised average U.S. IQ scores (similarity 0.91)
• Targeted interventions can raise a nation’s average intelligence level (similarity 0.89)
• National infectious disease burden strongly predicts average national IQ (similarity 0.88)
• Rapid IQ gains from reduced disease burden rule out genetic explanations (similarity 0.87)
• Disease-reduction interventions like vaccination and clean water could raise national IQ scores (similarity 0.87)
• Population IQ scores have risen rapidly over decades, refuting fixed-IQ claims (similarity 0.86)
• Claiming IQ gaps are immutable functions as a self-fulfilling excuse for inaction (similarity 0.85)
• Americans gained up to 15 IQ points after iodized salt became mandatory in 1924. (similarity 0.85)
• Salt iodization raised IQ scores of millions of people by 15 IQ points in iodine-deficient regions and is highly cost-effective at pennies per person per year. (similarity 0.84)
• A 2017 study found that the introduction of iodized salt in 1924 raised IQ for the one-quarter of the population most deficient in iodine. (similarity 0.84)
• Introduction of iodized salt increased IQ by approximately 15 points for those most deficient in iodine. (similarity 0.83)
• Results are consistent with iodization raising IQ by 15 points in iodine-deficient areas and a nationwide average increase of ~3.5 IQ points. (similarity 0.83)
• Men from the lowest-iodine areas born in 1924 or later had an average IQ that was 15 points higher than their predecessors. (similarity 0.83)
• Salt iodization beginning in 1924 raised IQ by approximately one standard deviation (15 points) for the quarter of the population most deficient in iodine. (similarity 0.83)
• We find that for the one quarter of the population most deficient in iodine this intervention raised IQ by approximately one standard deviation. (similarity 0.82)

Library Connections

• Adding iodine to salt in 1924 raised average U.S. IQ scores #exemplifies (0.90) — Did iodized salt raise the IQ of 50 million Americans by 15 points?
• Population IQ scores have risen rapidly over decades, refuting fixed-IQ claims #corroborates (0.85) — Harriet A. Washington, A Terrible Thing to Waste, 124
• Rapid IQ gains from reduced disease burden rule out genetic explanations #corroborates (0.80) — Harriet A. Washington, A Terrible Thing to Waste, 945