For- Grossman- fathers play role in terms of play and simulation, rather than sensitivity that predicted healthy future relationships with their children.
For- Ang- negative relationships with a father predicted aggression in asian boys, however this is not generalisable to other cultures as the roles in the family may vary depending on the culture
Schaffer and Emerson - many kids had monotropy, but for many this was the father,
Against- Bowlby argued father role is economic rather than being connected to one attachment, based on evolutionary theory that women are more biologically equipped to be nurturing , socially sensitive