The Harlows and their colleagues conducted studies of rhesus monkeys that were reared by wire-mesh and terry-cloth surrogate mothers. According to this study, rhesus infants reared in solitary confinement:
A) fended off attacks by other monkeys.
B) later avoided other monkeys.
C) only extended their social contacts to older monkeys.
D) were overprotective of their offspring.
Question 2
Which of the following is true of sibling relationships in middle adulthood?
A) A majority of sibling relationships get cut off in middle adulthood in the United States.
B) Most adult sibling relationships tend to reflect the nature of sibling relationships in childhood.
C) Very few people in middle adulthood have at least one living brother or sister in the United States.
D) Brothers tend to have more intimate relationships than sisters.
The experiment of Plaxton and his colleagues demonstrated that plants can alter their metabolism in
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