Researchers were surprised to find the trait appeared to be a bigger determining factor than age and race.
There also appears to be little benefit in being extremely attractive over simply being very attractive in the eyes of a typical potential partner.
Researchers tested people with photos of genuine and fake emotions to find out if those with psychopathic traits could tell the difference.
The parasite infects a staggering 30-50% of the world's population.
Although people claimed to remember events from infancy and toddlerhood, scientists widely believe earliest memories stem from roughly 3 to 3 and a half years of age.
Such a technique could one day be used in high-risk individuals as an intervention to reduce the risk of committing violent acts.
Mantras like "Find your passion" make pursuing interests sound too rigid and unattainable, according to psychologists at Stanford University.
"We are far from being rational decision-makers."
Who you gonna call? A rational scientist to help explain things.
The unintended consequences could be explained by a psychological phenomenon called the "boomerang effect."
Results could one day lead to novel treatments or therapies for reducing domestic violence, the lead author said.
Our eyes are a window into our personality.
What if we had the ability to fool our brain into thinking that we'd experienced something that never happened?
Researchers surveyed workers about the negativity they encountered at work and how it impacted their health.
Are we looking for aliens in the wrong way?
Decades of research has shown that our relationship with all media, whether movies, television or radio, is symbiotic: People like them because of the gratifications they get from consuming them—benefits like escapism, relaxation and companionship.
At work, 'successful' psychopaths make it to the highest echelons of power as they are willing to do whatever is necessary to get what they want.