When subjects of differing ages are compared at a single point in time,the study is called a
A) cross-sectional study.
B) longitudinal study.
C) cross-cultural study.
D) sequential study.

Question

Quizplus · Accepted Answer

A cross-sectional study compares different age groups at a single point in time, while a longitudinal study follows the same group over a period of time. A cross-cultural study compares different cultures, and a sequential study combines both cross-sectional and longitudinal approaches. Therefore, the best choice for a study comparing subjects of different ages at a single point in time is a cross-sectional study.

When Subjects of Differing Ages Are Compared at a Single