| http://www.w3.org/ns/prov#value | - shared environment = no effectmonozygotic twins = big effectAn overview of recent books on happiness, in the New York Review of Books....Beginning in the 1980s, Lykken and his colleagues surveyed 2,310 pairs of identical and fraternal twins, some reared together, others brought up apart, looking to see how closely mood, affect, temperament, and other traits tracked with shared genes and/or a share
|
