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  • Harlow (1958)
    • Procedure
      • Harlow wanted to investigate what love was based on for infants
      • He used rhesus monkeys
      • harlow reared 16 monkeys with two wire model mothers
        • condition one: milk was dispended by the plain wire mother
        • condition two: milk was dispensed by the cloth covered mother
      • Observed for 165 days
      • The amount of time spent with each of the mothers was measured
      • Also investigated what the monkeys did when scared by a toy
    • Findings
      • All monkeys spent most of their time with the cloth covered mothers
      • Went to the mother with food just to feed, then returned to the cloth mother
      • When frightened, all moneys clung to the cloth mother, and when playing with new toys, kept one foot on the cloth mother
      • conclusion
        • Suggests infants attach to the person who provides comfort, not food
    • Long lasting effects
      • Monkeys with the cloth covered monkey did not develop normally
      • More aggressive
      • Less sociable
      • Bred less than normal
      • When they became mothers, they neglected their young and some even attacked and killed their children
      • Monkeys that only had a wire mother were the most dysfunctional
      • Motherless moneys could recover if socialised with peers before 3 months
      • If they had a wire mother, and were not socialised before 6 months it could not be revered
    • Evaluation
      • Strength - real-world value
      • Limiation - generalising from monkeys to humans
      • weakness - ethical issues


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