Question

A study in which participants of different ages are compared at a given time is called a longitudinal study.
true or false

Answer 1

A longitudinal study is basically where you study one subject over a long period of time. Usually many, many years. Just one subject.

So yes, this one is False.

Answer 2

Let me slightly correct myself:

In a longitudinal study, we can study one subject, or one and the same people.

But still, over a long period of time.