The secular trend in growth is almost entirely due to environmental factors since genetic changes in a whole population take far longer than the observed time interval.
Evidence
Secular trends in growth (ScienceDirect/Archives de Pédiatrie)
Categorization
- corroborated: 2 independent passages support this claim
- XREF: connects to: Intelligence is malleable and shaped by environment, not fixed by heredity — Harriet A. Washington, A Terrible Thing to Waste, 54; IQ has risen across generations worldwide, and the effect must be environmental since genetic mutation could not act that fast, amounting to about 15 IQ points per generation on fluid tests. — Flynn Effect - an overview
Related
- IQ has risen across generations worldwide, and the effect must be environmental since genetic mutation could not act that fast, amounting to about 15 IQ points per generation on fluid tests. (similarity 0.83)
- The generational rise in IQ scores is attributed to environmental factors like improved nutrition, education, and reduced toxin exposure. (similarity 0.80)
- Large positive and negative trends in cohort IQ operate within as well as across families, implying at most a minor role for genes, with environment as the main driver. (similarity 0.80)
- Intelligence is malleable and shaped by environment, not fixed by heredity (similarity 0.80)
My notes
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