Huffington Post reported that 503 participants were asked to fill outaquestionnaire whichcould pick up individuals with psychopathicandnarcissistic tendencies.
"There may be many, many people who also have psychopathictendencies and have similar scans, who don't do antisocial behavior, who don't rape and kill, " Brodie says.
After analyzing data from 47 independent brain imaging studies, researchers found that the rule-breaking behavior common to people with antisocial, violent, and psychopathictendencies may result partly from damage to the neural circuitry in the brain that underlies moral decision-making.