Harry Harlow and his colleagues conducted a series of pioneering experiments in which rhesus monkeys were separated from their mothers 6 to 12 hours after birth and put into cages with one of two kinds of surrogate mothers: cloth mothers and wire mothers. Which of the following is one of the observations made from these experiments?
A. Feeding is the most important thing babies get from their mothers.
B. None of the monkeys in either group grew up normally.
C. Only human infants have the need for close bodily contact.
D. The cloth mothers provided the same kind of stimulation for positive development as a live mother.
Answer: B
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