A psychologist has collected data on the physical agility of young adults and now wishes to collect similar responses from elderly people. On the basis of sampling theory, he should attempt to recruit research participants from
a. his elderly friends.
b. elderly people who are athletic.
c. only people that he does not know.
d. a representative sample of elderly people.
Answer: d. a representative sample of elderly people.
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According to the discussion of prospective and retrospective memory,
a. distinctive encoding improves performance on both kinds of memory tasks. b. the research on retrospective memory is typically higher in ecological validity than is the research on prospective memory. c. a delay period has a stronger effect on retrospective memory than on prospective memory. d. retrospective-memory tasks typically activate the frontal lobe of the brain, but prospective-memory tasks do not.
The most common time for males and females to have a baby is during
adolescence. young adulthood. middle adulthood. late adulthood.