While this emphasis on personal biography lends itself to much needed psychological analysis, the cumulative effect of such accounts is that serial killing can appear a-historical and a-cultural, as though such predispositions might manifest themselves in identical ways irrespective of context. Popular representations of Jeffrey Dahmer, Harold Shipman, John Wayne Gacy and other notorious figures emphasise the sociopathic tendencies of the lone serial killer, presented in accounts that accentuate how assorted personality traits and risk factors ostensibly contribute to their otherwise unfathomable behaviour. The study of serial killers has been dominated by an individualised focus on studying the biography of offenders and the causes of their behaviour.
