Animal Studies of attachment Flashcards
When was Lorenz study
1935
Who conducted a study on goslings
Lorenz
How did Lorenz study imprinting
Took a group of gosling eggs and split them into two groups, one in an incubator and one with their natural mother. When the incubated goslings hatched the first moving thing they saw was Lorenz
What did Lorenz do to test the effects of imprinting
He placed the two groups of goslings back together with both Lorenz and the natural mother present. Lorenz marked the two groups to distinguish them. He found that the goslings quickly divided up to follow their previous parent. They had no recognition of their natural mother
Did Lorenz goslings recognise their natural mother
No, they had no recognition of their natural mother
What is imprinting
An innate readyness to develop a strong bond with their mothers at a certain point in development
What period was imprinting limited to
A very specific period, which for the goslings was within the first two days
What did Lorenz call the specific imprinting period
The critical period
What happens if an animal is not exposed to a moving object in the critical period
It will not imprint
What animals did Lorenz find wouldn’t imprint on humans
Curlews
What are did Lorenz find the characteristics of imprinting to be
Long lasting and irreversible
What evidence did Lorenz have that imprinting was long lasting and irreversable
One of the geese would sleep in Lorenz bed each night
How did imprinitng affect mating and what is this called
The animals will choose to mate with the same kind of object they imprinted on, called sexual imprinting
Who supports Lorenz study (mostly)
Guiton
What did Guiton do
Demonstrated imprinting in animals. Leghorn chicks who were exposed to a yellow glove whilst being fed for the first few weeks of life would imprint on the glove. Later they tried to mate with the glove. Supports the view that animals are not born with a predisposition to imprint on a specific object and sexual imprinting