Even if a pre-existing measure of a construct of interest exists,it is a better idea to create your own so you understand it better.

Question

Quizplus · Accepted Answer

It is not always necessary to create your own measure if a valid and reliable pre-existing measure of the construct of interest exists. However, it is important to thoroughly understand the measure and its properties before using it in research.

Even If a Pre-Existing Measure of a Construct of Interest