A commonly used design in adult development and aging research is the extreme age design ("young" vs "old"). Which of the following is a limitation of this type of study?
A. the samples are not representative and may not generalize
B. the measures may not mean the same thing across age groups and may not be valid
C. age is not treated as a continuous variable
D. all of these are correct
Answer: D
You might also like to view...
Which of the following is an example of environmental press?
a. An elderly woman is swimming in the Senior Olympics. b. An elderly man can no longer cook, clean, or do laundry for himself. c. A group of elderly men and women play cards together once per week. d. An elderly woman serves as a volunteer at the local hospital.
Flying south from Boston on a clear night and looking down on an unbroken carpet of lights, showing settlements all the way to Virginia, would reveal the existence of__________.
A. the rural rebound B. a megalopolis C. the outer beltway D. an exurbia
According to the definition often used by people in North America, which of the following would be an example of a sport?
A. Playing chess in a city tournament. B. Jumping rope in an aerobics class. C. Jogging with friends on the weekend. D. Racing in the Indianapolis 500.
Which of the following is an example of the means of production?
A. coffeehouses B. factories C. arcades D. shopping Malls