indeed, I was thinking more nature vs nurture - are these traits baked into people when they are born? do events shape them etc. an age old question I suppose,

indeed, I was thinking more nature vs nurture - are these traits baked into people when they are born? do events shape them etc. an age old question I suppose, though a measure perhaps makes it easier to trace things through someones life. Edit: I suppose we could measure the value of D over generations and see if it's heritable.