A person who refers someone is often called a "referrer" or "referral source." This individual typically recommends another person for a job, opportunity, or service based on their knowledge of that person's skills or qualifications. In professional contexts, this can also be seen as a form of networking or advocacy.
You would call them someone who peruses.
Well, some would call such a person a Hermit.
I would call them a fallible person - as almost all of us are.
You would call that person a person dealing with post-traumatic stress.
A name is for someone to call you something. Would you want someone to call you something or say,"Hey........um.....you person over there!"
That person would be called a scientist
Where I am, it refers to a younger person who is annoying but it's meaning can and will change by location and by who is using it as well as the context.
You could call them a dreamer, a fantasizer, or someone who is lost in their own world.
If someone calls you complex, its means that they don't understand you, your hard to fugure out.
Psychosis is a term that refers to an individual who is out of touch with reality. An example of psychosis is Schizophrenia.
Usually you would call that person a pessimist or someone who may just be miserable and down in the dumps temporarily.
If the person is on television, he or she is a newscaster or newsreader. Someone who is sent to you to tell you a piece of news is a messenger. Someone who likes to talk about news concerning his or her neighbours is a gossip.