Thinking about "old age" and associating it with nursing homes is a

Which of the following is characteristic of life-cycle transitions?

a. They are the times when people move smoothly from one stage of life to another. b. They mark the acceptance of death that comes at the end of a long life. c. DSM-5 places them in the category of mental disorders. d. They are times when people often struggle as they move from one life stage to the next.

A clear advantage of longitudinal designs over cross-sectional designs is that longitudinal designs

a. are quicker and easier to administer b. can be used to assess the stability of individual differences over long periods c. allow tighter experimental control over the experiences children encounter d. are less affected by biased memory effects in which current memories influence perceptions of prior events