Answer:representativeness heuristic or bias
Explanation:
Representativeness heuristic or bias occurs when we doubt the situation that we want to judge but we don't have enough information to make a decision about that situation so we take an easier mental short way to get us there , this is know as representativeness heuristic.
It makes us reach our decision fast but in doing so we may misjudge the situation or use stereotypic ideas to make judgements.
Usually we use or prototype or the already existing information in our mind to make decisions just like Phil above he knows that his former employee Sue went to the same college with the potential new employee Steven and now he is using the existing information that he has about the former employee Sue who didn't have proper training to judge that Steven who went to the same college as Sue also doesn't have proper training.