1 / 51

Why do Behavioural Profilers fail to catch Serial Killers?

Why do Behavioural Profilers fail to catch Serial Killers? The Thirty Year Hunt for the BTK Murderer Professor Craig A. Jackson Head of Psychology Centre for Applied Criminology. The Problems with Criminal Profiling Has never led directly to the capture of any serial murderers

jud
Télécharger la présentation

Why do Behavioural Profilers fail to catch Serial Killers?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Why do Behavioural Profilers fail to catch Serial Killers? The Thirty Year Hunt for the BTK Murderer Professor Craig A. JacksonHead of Psychology Centre for Applied Criminology

  2. The Problems with Criminal Profiling • Has never led directly to the capture of any serial murderers • Behavioural Profiling based on spurious science in 1950s-1960s • Small Data sets • Limited numbers • Biased sample • Profiles too vague to be helpful to police • Given too much credibility as a scientific discipline • Behavioural profiling is not open, replicable or repeatable • No scientific test of the usefulness of this method

  3. The "Cracker-Basher" article Wilson D, Jackson CA, Kaur-Rana B. Against the Medical-Psychological Tradition of Understanding Serial Killing by Studying the Killers. Amicus Journal, 2010; 22: 8-16.

  4. UK Serial Murderers and Victims 12 (38.7%) 5 (15.3%) 7 (22%) 8 (25%)

  5. Current serial murder case: UK Stepping Hill Hospital 7 inpatients murdered over 7 weeks Insulin overdose via saline tampering Arrest of 27yr Female nurse Rebecca Leighton Remanded for 1 month Released - no grounds for prosecution Offender space Victims Un-sub Suspect 4000 staff 700 possible “unsubs”

  6. Joanna Yeates murder case

  7. Myths about Serial Murderers Are dysfunctional loners Don't change the way they kill as they develop Travel far and wide when killing Insane or evil geniuses Are white males Are motivated by sex Cannot stop killing Want to get caught

  8. While forensics yielded little...

  9. The suspect fits the profile . . .

  10. We were worried about John… Night-terrors Emotional breakdown Paranoia Cardiovascular problems

  11. “Understanding Serial Killers . . . in order to Capture Serial Killers” Why? Prevent serial murder by understanding the killers’ minds? “Climbing inside the heads of monsters" FBI Behavioural Science Unit 1972 Questionnaire Interviews with 36 convicted serial killers – a biased sample 57 page questionnaire: “Thousands of questions”

  12. Killers who Talk too Much • Killlers’ accounts of their crimes and motives • Suit nature and circumstances of their arrest • Motivated by imprisonment / freedom / needs • Parole • Prison / wing transfer • Activity • Image • Book deals • 111 pages of autobiography • 145 tape recordings • 6,189 transcribed pages • “(Fred) West’s interviews were worthless except to confirm that nothing that he said could be relied upon as anything near the truth.” • John Bennet SIO Cromwell St Murders

  13. . . . and Those who Don’t Talk at all

  14. False Leads & Faulty Profiles • Yorkshire Ripper investigation • Three letters & one cassette tape • "You've had no luck catchin' me" • "Wearside Jack" • Police believed it was the genuine killer • Focused efforts on men from north bank of river wear • Distracted investigation - three possible deaths • John Humble – sentenced 8 years for perversion

  15. The Crimes of the BTK Serial killer in Kansas active from 1974 to 2005 Murdered 10 people from 1974 – 1991 (caught in 2005) Victims 1974 Mr Joe Otero, Mrs Julie Otero, and children Jo jr & Josephine 1974 Kathryn Bright and wounded her brother Kevin 1977 Killed Shirley Vian 1977 Killed Nancy Fox 1985 Marine Hedge, was murdered 1986 Vicki Wegerle was killed 1991 The last confirmed victim of BTK was Dolores Davis

  16. BTK's MO Entered houses while occupier out Cut phone wires outside house Force way in with false ID and .22 revolver Talked victims to compliance "Escaped prisoner on the run" Victims allowed themselves to be tied up Strangles several times before killing Sometimes sexually gratified himself at the scene Steals tokens / souvenirs

  17. Shirley Vian murder scene

  18. Shirley Vian murder scene

  19. Kathryn Bright murder scene

  20. Dolores Davis murder scene

  21. BTK's First Letter to the Police

  22. The Taunting Begins . . . 3 letters from BTK to media (1 was a poem) "Oh Death to Nancy" A letter sent to a potential victim who accidentally evaded him in 1979, Anna Williams "Oh Anna why didn't you appear" A recording of his voice calling for an ambulance after killing Nancy Fox Witnesses by an off-duty fireman

  23. "Oh Anna Why Didn't You Appear" T'was a plan of deviant pleasure so bold on that Spring nite My inner feeling hot with propension of the new awakening season Warn wet with inner fear and rapture, my pleasure of entanglement Like new vines so tight Oh Anna why didn't you appear

  24. A Gift for the Profilers… Two teams of FBI profilers assessed all case details 1979 The Hot Dog squad & 1985 The Ghostbusters Used best known Profilers from FBI Profiles were so varied as to be useless Contradictory Vague Non-Specific

  25. Unhelpful Criminal Profiles “Look for an American male with a possible connection to the military. His IQ will be above 105. He will like to masturbate, and will be aloof and selfish in bed. He will drive a decent car. He will be a ‘now’ person. He won’t be comfortable with women. But he may have women friends. He will be a lone wolf. But he will be able to function in social settings…he will be either, never married, divorced or married, and if he is married his wife will be younger or older. He may or may not live in a rental, and might be lower class, upper lower class, lower middle class or middle class. And he will be crazy like a fox, as opposed to being mental.”Gladwell(2007)

  26. BTK Goes Quiet… From 1991 - 2004 BTK was silent - no murders, no letters Was he dead Was he in prison Was he bored of killing Was he too old or not fit

  27. BTK Returns… Resumed taunts in 2004 14 years after last killing in 1991 14 letter drops 2004-2005 Wrote to Chief Detective Kenny Landwehr via local papers Began leaving packages and notes in parks, libraries and car parks

  28. BTK Returns

  29. The Taunting Continues . . .

  30. BTK Returns

  31. New Victims Selected

  32. Pen Pals again with SuperCop “COMMUNICATION. Can I communicate with Floppy and not be traced to a computer. Be honest. Under Miscellaneous Section, 494, (Rex, it will be OK) run it for a few days in case I’m out of town-etc. I will try a floppy for a test run some time in the near future – February or March.”

  33. At the End of it All..... • BTK sent the floppy disk to detectives • Contained a word processed letter • Metadata of the disk showed the following words • "Dennis“ • "Christ Lutheran Church“ • "Park City Community Library"

  34. Who was BTK? Dennis Lyn Rader Married father of two Heterosexual ADT home security installer (1980s) Scout Leader Church Minister City dog warden (1990s)

  35. Who was BTK?

  36. Who was BTK? Bondage BDSM Violent sexual fantasist Combined offending with his job

  37. Questions about BTK? Why undetected by wife and children? Why so long between kills? How evaded Police for so long? Why correspond with police and journalists? Why not stay undercover – 14 years after his last kill? Any more kills after 1994?

  38. Preventing Serial Murders • People from marginalized groups are the focus of serial killers • If we want to reduce victims of serial murder . . . • . . . We need to treat those groups better • Gay people • Older people • Homeless • Immigrants • Sex workers • Young people

More Related