Canadian anthropologist Professor Elliot Leyton (1986) in his seminal book Hunting Humans: The Rise of the Modern Multiple Murderer, was perhaps one of the first academics to contend that we should analyse factors beyond the medico-psychological tradition to understand the phenomenon of serial murder. His central thesis, derived from evidence of North American serial killing following the end of World War II, was that "modern" serial murder should be seen as a type of "homicidal protest" by frustrated members of the upper-working-class and lower-middle-class who tend to kill victims from the middle-classes.
Researchers also maintain that there is evidence of a degree of socio-economic frustration among some British serial killers. Be that as it may, they claim that it would be both bold and inappropriate to classify socio-economic frustration as either a sufficient or necessary condition for serial