Maternal deprivation:
Emotional and intellectual consequences of extended periods of separation with mother. Continuous care from a mother is essential for normal psychological development.
Critical period:
Critical period of psychological development = 2½
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Maternal deprivation:
Emotional and intellectual consequences of extended periods of separation with mother. Continuous care from a mother is essential for normal psychological development.
Critical period:
Critical period of psychological development = 2½
Effect on intellectual development:
Abnormally low IQ. This has been supported by studies of kids who stayed in adoption facilities, (Godfarb compared 15 kids who were institutionalised for over 6 months to 15 kids who went straight into foster care.)
Effect on emotional development:
44 thieves study, affectionless psychopath = lack of guilt or remorse. 14/44 = AP and 12/14 = deprived and 5/30 = deprived
Researcher bias
Bowbly carried out the research himself in 44T, he knew which kids were intended to find AP in, lowering the validity.
Research support
Harlow found that when the monkeys were separated from their mothers a reared with a wire mother instead, they formed aggressive and antisocial behaviour. Showing that material deprivation does have an effect on behaviour.
Small sample size
Bowlby only used 44 English teenagers ∴ not generalisable to the rest of the UK let alone other cultures.