Helped social workers understand that a lack of bonding experience may be a risk factor in childhood development allowing them to intervene to prevent poor outcomes (Howe)
Strength - Generalisability
Monkeys are much more similar to humans than birds so better to generalise
However the human mind and behaviour are more compelx
Limitation - Ethical issues
Procedure caused severelongterm distress to the monkeys, may not be outweighed by theoretical and practical benefits