Overtime, groups of people who interact regularly can become increasingly similar in terms of body weight, smoking habits, and even happiness. This increased similarity is likely due to ____________
A) genetic factors
B) social contagion
C) set point changes
D) coincidence
Answer: B
Rationale: Social contagion is the often subtle, unintentional spreading of a behavior as a result of social interactions. In one study, it turns out that the groups who showed similar patterns in their health statistics were also friends with one another. This can be explained by social contagion, with behaviors spreading in the same way a virus would.
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Information-processing theorists believe one reason older children outperform younger children cognitively is that older children
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