The fact that researchers must wait many years for their subjects to grow older,and that subjects may drop out of the study for a variety of reasons,are disadvantages of:
A) cross-sectional designs
B) amniocentesis
C) longitudinal methods
D) the nature-nurture question

Question

Quizplus · Accepted Answer

Longitudinal methods involve following the same subjects over a period of time, which allows researchers to see how individuals change over time. However, the fact that the study takes place over a long period means that researchers must wait for their subjects to grow older. Additionally, subjects may drop out of the study for various reasons, which may affect the validity of the results. Cross-sectional designs involve studying different groups of individuals at the same time, amniocentesis involves testing fetuses for genetic abnormalities before birth, and the nature-nurture question is a broad question about the influence of genetics and environment on development. None of these options directly address the disadvantages of waiting a long time and dealing with subject attrition, which are specific to longitudinal methods.

The Fact That Researchers Must Wait Many Years for Their