All of the following have been found in studies of siblings except
a. older siblings rarely serve as their younger sibling's secure base for exploration
b. siblings typically play complementary roles, such as leader and follower
c. older siblings are more likely to direct positive behaviors toward their young sibling if their mother refers to the younger sibling's emotions or actions
d. sibling relationships change from nearly vertical in early childhood to nearly horizontal by the end of adolescence
A
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What is the main difference between morphine and heroin?
a. Morphine is more potent than heroin. b. Heroin takes much longer to metabolize. c. Heroin more readily penetrates the blood-brain barrier. d. Morphine is more lipid-soluble e. all of the above
Saul is asked where he spends most of his time and he recalls a memory of his local library where he frequently goes to read. Given research on the activation spreading model, which of the following is likely most accurate?
A. He will have to mentally sort through several unrelated concepts before finding associated concepts to activate. B. Someone else will have to mention the word "book" before he is able to recall this related concept. C. He will need to picture an image of a library in his mind before being able to activate other related concepts. D. Activation of the concept of "library" will quickly activate the related concept of "books."