If you are working as a User Researcher with any of these types of personality disorders within the team, be prepared for difficult times ahead.
Talking from experience these types of personalities will never understand User Research because they all lack empathy, the ability to understand and share the feelings of another.
1. Narcissistic Personality Disorder
NPD is a mental condition where people have an inflated sense of their own importance, a deep need for excessive attention and admiration, troubled relationships, and a lack of empathy for others.
2. Borderline Personality Disorder (BPD)
BPD is like having no emotional buffer. It can go from nothing to sudden extremely overwhelming emotions making it a struggle to express them healthily.
3. Histrionic Personality Disorder (HPD)
HPD depends very heavily on being noticed, or seeking approval so much that it affects day to day living. This may include being the centre of attention, entertaining people constantly, feeling dependent on the approval of others, making rash decisions or being dramatic and over emotional.
Empathetic Personalities Understand
Empathetic people are very sensitive, naturally giving, spiritually open and good listeners. They absorb people's emotions and are highly attuned to other people's moods, good and bad. Many empathetic people are introverted, highly intuitive and need alone time.
When performing User Research try to work with empathetic personalities as these are the kind of people who can grasp the perspective of the way other people feel.