Regional PGS reflect environment too

Averaging polygenic scores across regions can pick up environmental differences, not just genetics. The paper cautions that geographic PGS maps may be misread as innate group differences when they partly capture schooling, mobility, disease spread, and other context. — This warns media and policymakers against genetic determinism in regional comparisons and urges more careful interpretation of population genomics in public debates.

Sources

Europeans Didn’t Evolve as One Population

Davide Piffer 2026.02.27 82% relevant

The author computes and time‑trends polygenic scores (PGS) for traits across ancient individuals and shows PGS trajectories depend on ancestry×time interactions, directly echoing the warning that regional or temporal differences in PGS can reflect changing environments, population processes and sampling rather than immutable genetics.

Round-up: Do close friends have similar IQs?

Aporia 2026.01.10 90% relevant

Piffer’s latitude‑and‑polygenic‑score analysis is a direct example of the risk that population‑level PGS maps pick up environmental and historical structure (ancient Northeast Asian ancestry) rather than pure innate differences; the article’s finding that associations weaken when controlling for ancient ancestry mirrors the existing idea’s warning.

Socio-economic status is a social construct with heritable components and genetic consequences | Nature Human Behaviour

2025.03.26 100% relevant

Fig. 3 in the paper: 'Polygenic prediction of average phenotypes per region probably captures environmental influences.'