One strength of Harlow's studies is it has real-world value
Importance of bonding has been applied to early childcare such as contact between mother and babies in the first few hours after birth
Harlow's study has helped social workers and clinical psychologist understand that a lack of bonding experience may be a risk factor in child development allowing them to intervene and prevent poor outcomes
Not appropriate to generalise Harlow's findings to humans as the human brain is still more complex
One strength of Lorenz's study is the research support for the concept of imprinting. A study by Regolin and Vallortigara (1995) supports Lorenz's idea of imprinting.
Chicks were exposed to simple shape combinations that moved, such as a triangle with a rectangle in front
A range of shape combinations were then moved in front of them and they followed the original most closely
This supports the view that young animals are born with an innate mechanism to imprint on a moving object present in the critical window of development, as predicted by Lorenz
One limitation of Lorenz's studies is it cannot be generalised to humans
The mammalian attachment system is quite different and more complex than that in birds
The value of Harlow's research is not just theoretical but also practical. We now understand the importance of attachment figures for baby monkeys in zoos and breeding programmes in the wild.
The generalisation of animal behaviour to human psychology is problematic
Some psychologists argue the long-term benefits to millions of human infants (resulting from Harlow's research) justify the studies when considering a cost-benefit