Harlow's studies with two artificial mothers concluded that ____.?
a. ?infant monkeys were motivated by the need for contact and comfort
b. ?females isolated at birth from all social contact still develop into good mothers
c. ?infant monkeys are more attached to caregivers who provide food than to caregivers who provide comfort
d. ?monkeys were able to successfully overcome maternal separation and being socially isolated for years
ANSWER:
a
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