Major issues in Bowlbys study is that results cannot be generalised as the sample was relatively small and biased and not all children developed psychopathy
Bowlby did not also exclusively mean the mother, also mentioned substitute
THEREFORE: results and findings must be treated with caution
Evidence 2:
Belsky said good quality healthcate improves cognitive functioning
Kelly: monotropy is the exception, need to consider cultural diversity
Meehan: cooperative child rearing in Congo have up to 20 caregivers
THEREFORE: showing it is not 100% needed for just the mother to be the primary caregiver