animal studies of attachment Flashcards
lorenzos research
ethologists conducted animal studies of relationships between neborn animals and their mothers
observations informed pscyhologists understanding of caregiver-infant attachment in humans
imprinting - lorenz
attach to and follow the first moving object they see
aim - lorenz
investigate imprinting in geese
procedure - lorenz
randomly divided a clutch of goose eggs
hatched half in incubator - saw lorenz as the first moving object
half hatched with mother in natural environment
observed their behaviour
also put all goslings in an upturned box and allowed them to mix
observed their behaviour when he removed the box
findings - lorenz
incubator group followed lorenz everywhere
control group hatched in the presence of their mother- followed her
when two groups mixed up the control group continued to follow the mother and the experimental group followed lorenz
calaled imprinting
lorenz identified a critical period in which imprinitng needs to take place
if imprinting does not occur within that time lorenz found that the chicks did not attach themselves to a mother figure
sexual imprinitng - lorenz
also investigated the relationship between imprinitng and adult mate preferences
observed that birds imprinted on a human would often alter display courtship behaviour towards humans
conclusion - lorenz
imprinting is an innate process
useful for survival
critical period is dependent on and varies across species
early attachment relationships predicts future bonds
lorenz evaluation - strength
research support
existence of support for the concept of imprinting
Regaling and Vallortigara supports lorenz idea of imprinting
chicks were exposed to the simple shape combinations that moved such as a triangle with a rectangle in corny
a range of shape combination were then moved in from of them and they followed the original one 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
lorenz evaluation - limitation
generalisability to humans
ability to generalise findings and conclusions from birds to humans
mammals attachment system is quite different than birds and more complex
example - mammals attachment is a two-way process so it is not just the young who become attached to their mothers but also the others show an emotional attachment to their young
means that it is probably not appropriate to generalise lorenz ideas to humans
Harlows research - importance of contact comfort
observed that newborn monkeys kept alone in a bare cage often died but that they usually survived if given something soft like cloths or cuddle
harlows research - procedure
tested the idea that a soft object served some of the functions of a mother
in one experiment he reared 16v baby monkeys with two wired model mothers
in one condition milk was dispensed by the plain wire mother
second condition the milk was dispensed by the cloth covered mothers
harlows research - findings
baby monkeys cuddled the cloth covered mother in preference to the plain wire mother
sought comfort from the cloth one when frightened regardless of which mother dispensed milk
showed that contact comfort was more importance to the monkeys than food when it came to attachment behaviour
harlows - maternally deprived monkeys as adults
harlow and colleagues also followed the monkeys who had been deprived of a real mother into adulthood and see if this early maternal deprivation had a permanent effect
found severe consequences
monkeys reared with plain wire mothers only were the most dysfunctional
even those reared with a cloth covered mother did not develop normal social behaviour
deprived monkeys were more aggressive and less sociable and they bred ess often , being unskilled by mating
when they became mothers some of the deprived monkeys neglected their young and others attacked their children
even killing them in some cases
critical period for normal development
harlow concluded that there was a critical period for attachment formation
a mother figure had to be introduced to a young monkey within 90 days for the attachment to form
after this time attachment was impossible and the damage done by early deprivation became irreversible
harlow evaluation - strength
real-world value
important real-world applications
examples - helped social workers and clinal psychologists understand that a lack of bonding experience may be a risk factor in child development
allowing them to intervene to prevent poor outcomes for children’s
we also now understand the importance of attachment figures for baby monkeys in zoos and breeding programmes in the wild
means that the value of harlows research is not just theroretial but also practical