There are 20 key traits which have been identified by pioneering psychologist Robert Hare. From what I know Glibness, Superficial Charm, Conning and Manipulative Behaviour, Sexual Promiscuity, Low Impulse Control, Emotional Poverty (aka flat affect) and, of course, No Conscience or Empathy are the key traits.
They score a person either as a 0 (trait not present), 1 (trait present to a limited degree) or 2 (trait present to a great extent) for each of the 20 traits. A score of 30 out of 40 is the threshold for a diagnosis using the Psychopathy Checklist Revised (PCL-R).
So, if you want to watch out for them then watch out for someone who seems to be quite arrogant, who successfully charms people (particularly women) but who, under the surface, is unpleasant and who leads a parasitic and criminal lifestyle. You won't get it right 100% of the time but these things are a good indication.
Sociopath.
If the person lacks feelings/empathy, along with other symptoms, it is possible that they are a sociopath
The sociopath lacked empathy and manipulated others for personal gain.
You don't. Get as far away from a sociopath as you possibly can.
"You are a sociopath." However, if they truly are, it won't matter to that person.
No, one should never marry a sociopath. Marriage involves trust, and a sociopath by his very nature cannot ever be trusted completely.
Just because she is "female" doesnt mean anything. A sociopath is a sociopath and the only way to "deal" with them is to stay as far away as possible.
He looks just like every other sociopath I've ever met.
Do nothing to indicate you see them as a sociopath. Find a counselor for them to see regularly, or a psychiatrist .
Confessions of a Sociopath - 2002 was released on: USA: 2002
No, not a sociopath. He was mentally ill for a period of time which made him vulnerable to disease. this made an infection to the leg. Not a sociopath but many believed he was a mentally scared psycopath
You can't. Sociopathy is a permanate mental disorder. Many people find that the symptoms decrease around the age of 40-50 but that is not always the case, and they never completely leave.