"Vincent is a scientist, and John is an economist. Both are conservatives. When they think about their political philosophies, they employ similar techniques in arriving at their political inclinations. This is an example of the"

The commonality corollary

Explanation: According to George Alexander Kelly  an American psychologist, in his  theory of personality and personal construct psychology. He is of the opinion that everyone have  'personal constructs' which determines  how they  perceive, interpret, and predict situations in thier environment.   To buttress his points, he came up with series of  corollaries which we can use to understand and analyse  thoughts and behaviors of people, One of such corollaries is the

The commonality corollary which explains that  one individual may employ similar construct with another making them  process same philosophies and this could be from experiences both of them must have encountered or shared.

This can therefore explain why Vincent, a scientist and John an economists employ similar philosophies to their political inclinations.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.