Dr. Frederick Wertham, who applied the term in criminal psychiatry, explained catathymic behavior as occurring when a person acquires an idea that he believes he must carry through to a violent act. The person develops a plan and feels a "tremendous urge" to put that plan into action, imbuing the violence with symbolic meaning. His thinking acquires a delusional quality, marked by rigidity and poor logical coherence.
http://www.trutv.com/library/crime/notorious_murders/mass/marc_lepine/7.html
the story of 25 year old student Marc Lépine who committed
mass murder at his school in 1989 seems to have
some eerie similarities, insightful stuff.
different delusion, similar outcome.
Marc Lépine - Wikipedia, the free encyclopedia
http://www.trutv.com/library/crime/notorious_murders/mass/marc_lepine/7.html
the story of 25 year old student Marc Lépine who committed
mass murder at his school in 1989 seems to have
some eerie similarities, insightful stuff.
different delusion, similar outcome.
Marc Lépine - Wikipedia, the free encyclopedia