I've posted before about my mother's lifelong narcissistic behaviour, and wondered whether this can run in the family? If I think about it, my mother's father (my grandfather) behaved like this, as did his sister and their mother, my great grandmother. Each of them had a scapegoat, and also they were all intensely selfish and prone to rages. Is this inherited or did they just copy behaviour they saw and grew up with during their formative years? I'm still trying to understand this condition.