<Li> Many are fascinated with fire setting . </Li> <Li> They are involved in sadistic activity; especially in children who have not reached sexual maturity, this activity may take the form of torturing animals . </Li> <Li> More than 60 percent, or simply a large proportion, wet their beds beyond the age of 12 . </Li> <Li> They were frequently bullied or socially isolated as children or adolescents . For example, Henry Lee Lucas was ridiculed as a child and later cited the mass rejection by his peers as a cause for his hatred of everyone . Kenneth Bianchi was teased as a child because he urinated in his pants, suffered twitching, and as a teenager was ignored by his peers . </Li>

Where did the word serial killer come from