>>12386139>Is personality entirely genetic?No, not entirely of course. But if it follows anything like IQ, then it's about 60-80%, depending where you're from.
The term is "heritability". For personality, we found that with forced selection, it takes about 30 generations for domestication to arise in foxes. (at about 70%).
>How do you explain identical twins, who shared the same experience growing up - but having different personalities?Brain damage. But most identical twins do actually have similar personalities. Even personal tastes and preferences. Even those separated at birth.
