I don't have any specific studies to mention, I am afraid, as I've only had them through third party sources. They will be in the books Waking Up by Sam Harris,

I don't have any specific studies to mention, I am afraid, as I've only had them through third party sources. They will be in the books Waking Up by Sam Harris, The Blank Slate by Steven Pinker, and The Righteous Mind by Jonathan Haidt. The last two more specifically.