In pre-post design,researchers measure the outcome of interest once before the intervention,introduce the intervention,and then measure the outcome again.Why is this considered the simplest method of reflexive control?
A)Measurements rarely vary across pre-post design.
B)Participants serve as their own controls.
C)They effectively measure outcomes in long-term evaluation studies.
D)Few variables are likely to change on their own regardless of intervention.

Question

Quizplus · Accepted Answer

In a pre-post design, participants are measured before and after an intervention, with each individual serving as their own control. This makes it a simple method of reflexive control, as it reduces the potential influence of extraneous variables on the outcome of interest. Additionally, pre-post designs are often used for short-term evaluation studies, rather than long-term evaluation studies. While measurements may vary across pre-post design, the key advantage lies in the use of the individual as their own control.

In Pre-Post Design,researchers Measure the Outcome of Interest Once Before