Goose eggs were randomly divided, 1/2 were hatched with their mother present in a natural enviroment. 1/2 were hatched in an incubator with lorenz being the first object they saw.
Baby geeseimprinted the first living objects they saw, geese followed lorenz and peformed matting rituals on him. Identified a critical attachment period of 18 hours after birth. If geese did not imprint in time they did not form healthy attachments.
Chicks imprinted on the first item they saw (a rubber glove used for feeding). They peformed mating rituals on the glove. Showing that imprinting is linked to reproductive behaviour.
In a controlled enviroment, infantmonkeys were reared with two mother surrogates. One was wire and provided food and the other was cloth and provided comfort. Behaviour was observed and time spent with each mother was recorded.
What were the results of Harlow and Harlow's experiment?
Monkeys spent 18 hours with the cloth mother and only 1 hour with the wire mother. Monkeys relied on the cloth mother when scared, showing contact was more important than food. The critical attachment period is 90 days.
Maternal deprovation was investigated when monkeys were only exposed to a wire mother. They were aggressive, unsociable, unskilled at mating and even attaked and killed their children.
Explain major issues with lack of standardisation of Harlow and Harlow's study
The two mothers had completly different heads, decreasing validity. the comfort monkey had a more realistic face, which may be why monkeys spent more time there.
Explain the Theoretical and practical value of Harlow and Harlow's study
It contributed greatly to attachment theories, demonstrating the importance of comfort over food and stable attachments for success in future relationships. Social workers used this study to understand factors of child abuse and neglect.