Answer: Depersonalization of the colleague
Step-by-step explanation:
According to the concept of Milgram, depersonalization of a person is the mechanism in which a person's feeling,characteristic or thoughts seems to be unreal.They tend to lose identity sense of their own or others.
According to the question's scenario, Noah's comment on his colleague on social media is depicting depersonalization of colleague done by Noah.He lost his sense to identify his colleague on social media as he would never make such comment in real life on him.