Evaluative
A person who is evaluative is someone who carefully considers or judges something. When you are evaluative, you judge or calculate the quality, value, or amount of something.
Evaluative research, also known as program evaluation or evaluation of a product, is a way to evaluate products and concepts and collect data that may help to improve them. It is defined as a form of systematic, disciplined inquiry that is undertaken to provide information that will assist in decision making about an object, program, practice, activity, or system.