A study on male and female serial killers' modus operandi have led researchers to determine how their methods differ which could be explained by psychological evolution. Of course, this is not to say that the patterns are fixed and that men and women will only stick to a certain method.
But this research does inform us about the motives, how men and women generally go about these crimes, and it would give us insight to help murder investigations.
While there is considerable public interest in serial killers, Harrison said there has been little research on these crimes, possibly because serial killers are relatively rare.
But while working on a previous study, Harrison started to notice a difference between male and female serial-killing patterns that she was interested in exploring.
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