We are accustomed to think of sociopaths as violent criminals, but in The Sociopath Next Door, Harvard psychologist Martha Stout reveals that a shocking 4 percent of ordinary people, one in 25, has an often undetected mental disorder, the chief symptom of which is that that person possesses no conscience. He or she has no ability whatsoever to feel shame, guilt, or remorse. One in 25 everyday Americans, therefore, is secretly a sociopath.

We know of psychopaths from chilling headlines and stories in the news and movies - from Ted Bundy and John Wayne Gacy to Hannibal Lecter and Dexter Morgan. As Dr. Kent Kiehl shows, psychopaths can be identified by a checklist of symptoms that includes pathological lying; lack of empathy, guilt, and remorse; grandiose sense of self-worth; manipulation; and failure to accept one’s actions. But why do psychopaths behave the way they do? Is it the result of their environment - how they were raised - or is there a genetic component to their lack of conscience?

Most people are both repelled and intrigued by the images of cold-blooded, conscienceless murderers that increasingly populate our movies, television programs, and newspaper headlines. With their flagrant criminal violation of society's rules, serial killers like Ted Bundy and John Wayne Gacy are among the most dramatic examples of the psychopath. Individuals with this personality disorder are fully aware of the consequences of their actions and know the difference between right and wrong....

As M. E. Thomas says of her fellow sociopaths, we are your neighbors, co-workers, and quite possibly the people closest to you: lovers, family, friends. Our risk-seeking behavior and general fearlessness are thrilling, our glibness and charm alluring. Our often quick wit and outside-the-box thinking make us appear intelligent - even brilliant. We climb the corporate ladder faster than the rest, and appear to have limitless self-confidence.... Who are we? We are highly successful, non-criminal sociopaths and we comprise 4% of the American population (that's 1 in 25 people!).

When a high-conflict person has one of five common personality disorders - borderline, narcissistic, paranoid, antisocial, or histrionic - they can lash out in risky extremes of emotion and aggression. And once an HCP decides to target you, they're hard to shake. But there are ways to protect yourself. Using empathy-driven conflict management techniques, Bill Eddy, a lawyer and therapist with extensive mediation experience, will teach you to spot warning signs of the five high-conflict personalities in others and in yourself.