Selfishness is not a learned behavior. We are born selfish. No one needs to teach a young child anything about “private property.” What’s theirs is theirs and what’s yours is theirs; things simply become “private property” by touch. I guess you could argue that it’s “genetic,” going all the way back to Adam.
I didn’t have to teach Connar anything about sticking his foot in his mouth. So I guess you could say that sticking one’s foot in mouth is not a learned behavior either. Although he’ll certainly have plenty of time to develop this “skill” by watching and learning from one of the best: his Daddy.