Question

unit test
google classroom
microsoft teams
a company wants to study the effectiveness of a new pain relief medicine.
they recruit 100 volunteers with chronic pain.
each subject takes the new pain relief medicine for a 2 - week period, and a placebo for another 2 - week period. subjects dont know which pill is the actual medicine, and the order of the pills is randomly assigned for each subject. researchers will measure the difference in the overall pain level for each subject.
what type of experiment design is this?
choose 1 answer:

Explanation:

This is a matched - pairs design. In a matched - pairs design, each subject is exposed to both the treatment (new pain relief medicine) and the control (placebo). Here, each volunteer (subject) takes the new medicine for 2 weeks (treatment) and the placebo for 2 weeks (control). The order is randomly assigned (to control for order effects like learning or fatigue over time), and the difference in pain level for each subject is measured. This design helps to control for individual differences among subjects since each subject acts as their own control.

Answer:

Matched - pairs design.