Twins-reared-together data cap authoritarianism heritability near thirty percent

Evidence

Lykken combined the results of the two twins-reared-together studies and got male correlations of . for the monozygotes and . for the dizygotes. For females, the numbers were . and .55. Combining the genders gives you something like . and . (using the z-transformations needed for averaging correlations). That translates into an upper limit of heritability of about 30%, so genes for fascism may exist. If, however, you just consider the twins-rearedapart study, it is all heredity and then some. — Bob Altemeyer, The Authoritarian Specter, 960

Categorization

• XREF: Bounded heritability estimate useful for vault claims contrasting individual-genetic versus social/cultural explanations of authoritarianism.
• corroborated: 2 independent passages support this claim — Bob Altemeyer, The Authoritarian Specter, 960