Filmed 4-month old babies in face-to-face interactions with:
- Primary caregiver mums (P.C.M).
- Secondary caregiver fathers (S.C.F).
- Primary caregiver fathers (P.C.F).
The P.C.F's, like P.C.M's, spent more time smiling, imitating and holding infants than S.C.F.
This shows that its not about gender but being responsive.