What happens in the brain of a mass killer that permits such violence to occur?
In an attempt to answer this question, researchers at the University of Connecticut are preparing to carry out what may be the first extensive study of the DNA of a mass murderer.
The genome of Newtown, Connecticut shooter Adam Lanza will be mapped in an effort to find mutations linked with increase risk for extreme violence. The decision to do so has pitted the ethical and scientific consequences of the research against one another.
Dr. Paul Appelbaum practicing psychiatrist and professor of psychiatry, medicine, and law at Columbia University explains the process.