11/03/2011 02:27 pm ET Updated Jan 03, 2012

'We Need To Talk About Kevin:' Is Your Child A Psychopath?

Kevin, as one British film critic writes, seems "alarmingly familiar" to some parents -- the teen who bullies other children and shows cruelty to animals, never showing a shred of empathy. The fictional child in a new award-winning film, "We Need to Talk About Kevin," reveals his psychopathic colors early before going on a killing rampage at his high school. The character's mother, played by Tilda Swinton, wonders if it was her fault, and it would be comforting to say, "no." But psychiatric experts say that psychopathy affects 3 to 6 percent of the population and is genetically based.

Read more on ABC News