You are interested in the change in the heart rate of runners. So, you measure the pre-race heart rate of all the runners in a race as well as their post-race heart rate. This is known as what type of research design?
A) before-and-after
B) before-only
C) after-only
D) before-and-after two group

Question

Quizplus · Accepted Answer

This is a before-and-after research design because the heart rate of the runners is measured both before and after the race.

You Are Interested in the Change in the Heart Rate