A psychopath will use people for excitement, entertainment, to build their self-esteem and they invariably value people in terms of their material value (e.g. money, property, comfort, etc..). They can involve and get other people into trouble quickly and they seem to have no regret for their actions. To date there is no checklist of behavior and symptoms that will tell you with certainty whether or not a person is a psychopath. But there are warning signs. The following warning signs are based on my experience but primarily research conducted by Robert Hare, Ph.D - the leading expert on the Psychopathic Personality.
Characteristics of a Psychopath
superficial charm
self-centered & self-important
need for stimulation & prone to boredom
deceptive behavior & lying
conning & manipulative
little remorse or guilt
shallow emotional response
callous with a lack of empathy
living off others or predatory attitude
poor self-control
promiscuous sexual behavior
early behavioral problems
lack of realistic long term goals
impulsive lifestyle
irresponsible behavior
blaming others for their actions
short term relationships
juvenile delinquency
breaking parole or probation
varied criminal activity
The idea that psychopaths eat people is a myth. In reality, a person with a psychopathic personality can lead what appears to be an ordinary life. They can have jobs, get married and they can break the law like anyone else. But their jobs and marriages usually don’t last and their life is usually on the verge of personal chaos. They are almost always in some kind of trouble or they are not far from it.
A psychopath is usually a subtle manipulator. They do this by playing to the emotions of others. They typically have high verbal intelligence, but they lack what is commonly referred to as "emotional intelligence". There is always a shallow quality to the emotional aspect of their stories. In particular they have difficulty describing how they felt, why they felt that way, or how others may feel and why. In many cases you almost have to explain it to them. Close friends and parents will often end up explaining to the psychopath how they feel and how others feel who have been hurt by him or her. They can do this over and over with no significant change in the person's choices and behavior. They don't understand or appreciate the impact that their behavior has on others. They do appreciate what it means when they are caught breaking rules or the law even though they seem to end up in trouble again. They desperately avoid incarceration and loss of freedom but continue to act as if they can get away with breaking the rules. They don't learn from these consequences. They seem to react with feelings and regret when they are caught. But their regret is not so much for other people as it is for the consequences that their behavior has had on them, their freedom, their resources and their so called "friends." They can be very sad for their self. A psychopath is always in it for their self even when it seems like they are caring for and helping others. The definition of their "friends" are people who support the psychopath and protect them from the consequence of their own antisocial behavior. Shallow friendships, low emotional intelligence, using people, antisocial attitudes and failure to learn from the repeated consequences of their choices and actions help identify the psychopath.