I didn't see it although it is on my list to watch. However, it doesn't surprise me at all that mother's have a huge influence on the development of a child in their care.
If they are disordered and abusive the child is likely to develop into an angry and disordered individual.
Imo it is more surprising how some children from seriously abusive and cruel homes manage to break the pattern and give love and care to their children. I am aware there are also much more subtle forms of abuse from being over demanding mothers trying to make their son into their 'real' man etc.
The responsibility to be a mother is huge and the success of mothering is very often due to the mother's own mothering....
Agreed Maggie and I've seen no evidence to suggest Bamber wasn't "disordered"
He was adopted at a young age. And his adoptive mother suffered from mental health issues.