Psychopaths and sociopaths can display harmful behaviors that are often hidden beneath a calm exterior. Discover the 7 telltale signs, from manipulative lying to a lack of emotional connection, that ...

Even if you haven’t heard of Martin McDonagh’s Seven Psychopaths, odds are you’ve seen it—offensive lime green glamour shots of its titular psychos are on bus stop one-sheets, papering city walls or ...

Most research on psychopathy focuses on offenders involved in the criminal justice system. The Psychopathy Checklist–Revised (PCL-R) applied to this population has identified individuals with this ...

Jonathan R. Goodman does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...