This is a question that is yet to be answered. There are just about as many answers supporting both sides of the question going as far as to say it is in their DNA. IT can be an interesting subject to research if this type of thing interest you. Just do not expect to find a definitive answer. [ adviceman49's advice column | Ask adviceman49 A Question ]
Pittguy answered Saturday December 20 2014, 10:10 pm: Well, I just so happen to have an educational and professional background in journalism and English so I think I may be able to help you out.
While I'm not sure what your intent is with the speech, there are a number of ways you can approach it.
My suggestion would be to use wording like:
"Historically, people who have committed serial homicides may be very hard to relate to for the average person. However, if we look into the science and psychology behind their actions..."
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