A family portrait of the killer is very different from the traditional image of the killer or maniac. Scientists have conducted with 153 killers more than 1500 hours in conversation. All 153 people committed premeditated murder, writes The Daily Mail.
Men in most cases were such a step in anger, the act was impulsive. Many of the men-killers suffer from any mental disabilities, had a mental disorder. However, the convictions they had less than the common criminals.
Scientists believe, most family murders are committed in the heat of passion. A role played by alcohol and drugs, sometimes the game is jealousy, or revenge after a breakup.