Why are many biologists skeptical about the concept of group selection?
a. Classic evolutionary theory proposes that the processes of natural selection operate only at the individual, not the group level.
b. Humans have not lived in groups for very long in their evolutionary history.
c. Evolutionary theory does not have any interesting in examining the concept of altruism.
d. Evolutionary theory believes it does an adequate job of explaining altruism with concepts such as rewards and costs.
Answer: A
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A healthy 75-year-old brain has just as many neurons as it did when it was a healthy 25-year-old brain
Indicate whether the statement is true or false
A psychologist from the _____ research area might study brain organization or the chemical messengers used in the nervous system
a. cognition b. social psychology c. psychobiology d. human development
When comparing Kenyan mothers with American mothers, Richmen, et al (1988)
observed that a. Kenyans engage in more soothing physical contact with their infants than do Americans. b. Kenyans engage in more eye contact with their infants than do Americans. c. Kenyans engage in more "rough play" with their infants than do Americans. d. Kenyans talk to their infants more than do Americans.
Studies examining the relationship between IQ and academic success indicate that
a. there is a negative correlation between school achievement and IQ score of -.35. b. highly educated, highly creative, and high IQ all go together. c. there is no relationship between IQ scores and school grades. d. the correlation between IQ and school grades is a sizable positive association of +.50.