Which of the following is true of the longitudinal method?

A) It compares people of different ages.
B) It studies the same people at different times.
C) It usually involves a larger sample than do cross-sectional tests.
D) It usually involves a smaller sample than do cross-sectional tests.

Longitudinal Method

A research design in which the same individuals are examined over a period of time, allowing for the observation of changes or development.

Cross-sectional Tests

Research methods or examinations conducted at a specific point in time to analyze data from a population or a representative subset.

Different Times

Moments or periods that are not the same, varying in many possible ways such as duration, significance, or point in history.