According to social identity theory, individuals view their own group favorably so as to: <span>think of themselves more favorably
This will make them feel a sense superiority toward other people that do not belong in their group. If they do not try to control this type of thinking, they could be trapped in an echo chamber where they secluded themselves from other people's opinion besides their group's.</span>
This question is really opinion based, but I would take it personal when things go wrong, since I start to think what I didn't or did do that made things go wrong.
<span>in medieval times, abnormal behaviors were viewed as a sign that a person was: possessed by demons
The people in medieval times haven't understood the concept of psychological disorders, so they perceive everyone who got it as being conquered/possessed by demons</span>