Answer:
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.