Reddit mentions of Behavioral Genetics

I'm a very rational person myself, so this should be a fruitful conversation. While culture plays an important in the development of many characteristics, it lacks the ancestral ties that determine who we are and how we react to such a culture. I'm sure you're familiar with nature vs. nurture debates and the heritability of traits such as intelligence for instance.

Scientific studies show that siblings adopted at birth, raised in the same environment, have no more similarity in IQ than that of strangers. It's genetic. Personality traits are very easily studied in identical twins switched at birth, even though each of the twins are raised in very different environments they maintain an astonishing similarity. If we have studies that scientifically prove the relationship of intelligence, personality, creative ability etc.. to genetics, how do you find the disposition to a certain spirituality not genetically linked?

There are many well-written psychology books out there that discuss behavioral genetics, you can buy this one shipped to your door for under 15 bucks.