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

Question

Quizplus · Accepted Answer

All of these options are correct limitations of the extreme age design. The samples may not be representative of the general population and may not generalize to other age groups. Additionally, measures may not be valid if they do not mean the same thing across different age groups. Finally, age is often treated as a categorical variable in this type of study, rather than as a continuous variable, which can limit the precision of the findings.

A Commonly Used Design in Adult Development and Aging Research