View Full Version : Heritability of human traits based on 50 years of twin studies

17-02-17, 17:33
Why there is so much resistance to this idea?

See: Polderman et al

"Despite a century of research on complex traits in humans, the relative importance and specific nature of the influences of genes and environment on human traits remain controversial. We report a meta-analysis of twin correlations and reported variance components for 17,804 traits from 2,748 publications including 14,558,903 partly dependent twin pairs, virtually all published twin studies of complex traits. Estimates of heritability cluster strongly within functional domains, and across all traits the reported heritability is 49%. For a majority (69%) of traits, the observed twin correlations are consistent with a simple and parsimonious model where twin resemblance is solely due to additive genetic variation. The data are inconsistent with substantial influences from shared environment or non-additive genetic variation. This study provides the most comprehensive analysis of the causes of individual differences in human traits thus far and will guide future gene-mapping efforts. All the results can be visualized using the MaTCH webtool."

Interesting graph...


17-02-17, 21:17
A monstrous database! Generally speaking it agrees with my observation how strong genetics is on our traits, and that includes character and psychology of a person.

They need to unleash AI on it, much more to be learned.