Sociopathy and psychopathy : The following is taken straight from Wiki.com which gives a brief description of these two mental disorders. A lot of reading about the subject proves that a person can be a combination of both disorders in varying degrees.
Sociopathy and psychopathy share many traits, which is the main source of confusion for differentiating them in psychology. Traits that sociopaths and psychopaths share include:
- a disregard for the rights of others
- a failure to feel remorse or guilt
- a disregard for laws and social mores
- a tendency to display violent behavior and emotional outbursts
Though not all psychology professionals agree on what exactly differentiates sociopaths from psychopaths, among those who believe each are separate disorders there is a list of definite differences. Sociopaths tend to be nervous and easily agitated. They are likely to be uneducated and live on the fringes of society, unable to hold down a steady job or stay in one place. Some sociopaths form attachments to an individual or group, though they have no regard for society in general. In the eyes of others, sociopaths appear clearly disturbed. Any crimes committed by a sociopath tend to be disorganized and spontaneous.
Psychopaths, on the other hand, often have charming personalities. They are manipulative and easily gain people’s trust. They have learned to mimic emotion and so appear “normal” to other people. Psychopaths are often educated and hold steady jobs. Some are so good at manipulation and mimicry that they can have families and other long-term relationships without those around them ever suspecting their true nature.
Psychopaths, when committing crimes, carefully plan out every detail and often have contingency plans in place. Because of this marked difference between the method of crimes committed by sociopaths and psychopaths, the distinction between these disorders is perhaps even more important to criminology than it is to psychology.
Another belief among some professionals is that the etiology of the disorders is different. According to David Lykken, a behavioral geneticist known for his studies on twins, psychopathy stems from a physiological defect in the brain that results in the underdevelopment of the part of the brain responsible for impulse control and emotions. Sociopathy is more the product of childhood traumas and abuse. According to this model, some professionals believe that sociopaths are capable of empathy, but only in specific contexts.
For example, sociopaths may attach their loyalty to a person or group and will feel empathy for or not hurt those people to which they are attached. Psychopaths, however, have an inability to feel empathy and are just as likely to hurt their family and friends as they are strangers. Other psychologists make these same distinctions, but define them as primary psychopathy and secondary psychopathy.
The following is from answers.com and explains the basic tendencies of a pathological liar. Sometimes one becomes a pathological liar to protect their own guilt of a sinister deed.
Identifying a Pathological Liar
Pathological liars - or "mythomaniacs" - may be suffering from histrionic personality disorder or narcissistic personality disorder. The following comments basically reflect a pathological liar who has the characteristics of histrionic personality disorder.
Some characteristics
1. Exaggerates things that are ridiculous.
2. One-upping. Whatever you do, this person can do it better. You will never top them in their own mind, because they have a concerted need to be better than everyone else. This also applies to being right. If you try to confront an individual like this, no matter how lovingly and well-intentioned you might be - this will probably not be effective. It's threatening their fantasy of themselves, so they would rather argue with you and bring out the sharp knives than admit that there's anything wrong with them.
3. They "construct" a reality around themselves. They don't value the truth, especially if they don't see it as hurting anyone. If you call them on a lie and they are backed into a corner, they will act very defensively and say ugly things (most likely but depends on personality), but they may eventually start to act like, "Well, what's the difference? You're making a big deal out of nothing!" (again, to refocus the conversation to your wrongdoing instead of theirs).
4. Because these people don't value honesty, a lot of times they will not value loyalty. So watch what you tell them. They will not only tell others, but they will embellish to make you look worse. Their loyalty is fleeting, and because they are insecure people, they will find solace in confiding to whomever is in their favor at the moment.
5. They may be somewhat of a hypochondriac. This can come in especially useful when caught in a lie, for example, they can claim that they have been sick, or that there's some mysteriously "illness" that has them all stressed out. It's another excuse tool for their behavior.
6. Obviously, they will contradict what they say. This will become very clear over time. They usually aren't smart enough to keep track of so many lies (who would be?).
Another WikiAnswers contributor adds:
- They lie about even the smallest things. For example, saying "I brushed my teeth today," when they didn't.
- They add exaggerations to every sentence.
- They change their story all the time.
- They act very defensively when you question their statements.
- They believe what they say is true, when everyone else knows it isn't.
An alternate 'checklist':
- Lies when it is very easy to tell the truth.
- Lies to get sympathy, to look better, to save their butt, etc.
- Fools people at first but once they get to know him, no one believes anything they ever say.
- May have a personality disorder.
- Extremely manipulative.
- Has been caught in lies repeatedly.
- Never fesses up to the lies.
- Is a legend in their own mind.
The one "special" thing about most people suffering any or all of these tendencies is that it's very unlikely they will ever admit to it. They have rearranged their own minds to support their own illusions of self worth. They can even fool psychiatrists.