We've had 20 years of mass murders throughout which I have repeatedly told CNN and our other media, if you don't want to propagate more mass murders, don't start the story with sirens blaring. Don't have photographs of the killer. Don't make this 24/7 coverage. Do everything you can not to make the body count the lead story, not to make the killer some kind of anti-hero. Do localize the story to the affected community and make it as boring as possible in every other market. Because every time we have intense saturation coverage of a mass murder, we expect to see one or two more within a week.

Our job should be like any other forensic scientist's - we should be truth seekers who are not partisan, who do not have any interest in the outcome, who call it as we see it no matter the consequences. But it seems a lot easier for chemists and anthropologists and pathologists to take that neutral role than it does for psychiatrists.

I like to have success experiences rather than failure experiences. So I'm more likely to compete in things I'm good at, and more likely to spend time on the things I expect to succeed at.

I do think a lot of sexual violence stems from experiences in childhood or at puberty. Some people become sadistic after suffering early abuse at the hands of parents, relatives or friends. But for others, the seed is planted in the formative years by the conflation of images of violence with those of sexual arousal. Magazines, TV shows and, especially, slasher movies are masters at doing this.

Consider surgeons and their work. It's unthinkable to put your hands in the warm blood of another human's gut. Even with rubber gloves on. Who'd want to do that? But surgeons get over it.

Killers seldom meet the legal standard for insanity, which is quite different from the way most people use the word every day. Killers may be disturbed, but that doesn't necessarily mean that they can't tell right from wrong or are compelled to maim or murder.

Celebrity stalkers also are not necessarily fixated on one person as the public thinks. Rather, they tend to switch targets, going from, say, an athlete to an actor to a politician.