Open Access Articles- Top Results for Psychic detective

Psychic detective

For the 1995 video game, see Psychic Detective (video game). For the television program, see Psychic Detectives.

A psychic detective is a person who investigates crimes by using purported paranormal psychic abilities. Examples have included postcognition (the paranormal perception of the past), psychometry (information psychically gained from objects), telepathy, dowsing, clairvoyance, and remote viewing. In murder cases, psychic detectives may purport to be in communication with the spirits of the murder victims.

Although there are documented cases where individuals claiming psychic abilities have assisted police in solving crimes, there is considerable skepticism in regard to the general use of psychics under these circumstances.[1]

Prominent cases

Many prominent police cases, often involving missing persons, have received the attention of alleged psychics. Following the disappearance of Elizabeth Smart on 5 June 2002, the police received as many 9,000 tips from self-proclaimed psychics (and others crediting visions and dreams as their source).[2] Responding to these tips took "many police hours," according to Salt Lake City Police Chief Lieutenant Chris Burbank. Yet, Elizabeth Smart's father, Ed Smart, concluded that: "the family didn’t get any valuable information from psychics."[3] Smart was located by observant witnesses who recognized her abductor from a police photograph. No psychic was ever credited with finding Elizabeth Smart.

In the case of the Long Island serial killer, the psychic said the body would be found in a shallow grave, near water and a sign with a G in it would be nearby. Despite the vagueness of this claim (the body was not in a shallow grave, water is everywhere in Long Island, and no sign with a G was nearby) the New York Post stated that the "Psychic Nailed it!" "More surprising than the psychic's failure is the fact that this information was described as an amazing success on over 70,000 websites without anyone realizing that she was completely wrong."[4]

When Washington, D.C. intern Chandra Levy went missing on 1 May 2001, psychics from around the world provided tips suggesting that her body would be found in places such as the basement of a Smithsonian storage building, in the Potomac River, and buried in the Nevada desert among many other possible locations.[5] Each tip led nowhere. A little more than a year after her disappearance, Levy's body was accidentally discovered by a man walking his dog in a remote section of Rock Creek Park.[6]

The case of Shawn Hornbeck received the attention of psychics after the eleven-year-old went missing on 6 October 2002. Most notably, self-proclaimed psychic Sylvia Browne appeared on The Montel Williams Show and provided the parents of Shawn Hornbeck a detailed description of the abductor and where Hornbeck could be found.[7] Browne responded "No" when asked if he was still alive. When Hornbeck was found alive more than four years later, few of the details given by Browne were correct. Shawn Hornbeck's father, Craig Akers, has stated that Browne's declaration was "one of the hardest things that we've ever had to hear," and that her misinformation diverted investigators wasting precious police time.[8][9]

In August, 2010, Aboriginal elder Cheryl Carroll-Lagerwey claimed to have seen the location of a missing child, Kiesha Abrahams, in her dream. The missing child's disappearance was being investigated by police. She took them to a location where a dead body was found, however it was of an adult woman and not the body of the child.[10][11]

A body was located in the US by Psychic Annette Martin. Dennis Prado, a retired US paratrooper, had gone missing from his apartment and police had been unable to locate his whereabouts. With no further leads, the chief investigating officer, Fernando Realyvasquez, a sergeant with the Pacifica (California) Police, contacted psychic detective Annette Martin. Prado had lived near a large forest, some 2000 square miles. Martin was given a map, she circled a small spot on the map, about the size of two city blocks. She said that Prado had struggled for breath, had died and his body would be there within the indicated area. She described the path he took, and where the body would be found. Although the area had been searched before and Prado had not been found, a search and rescue officer initiated a new search with the help of a search dog, as Martin suggested "A search dog is going to find him." They found the body covered with dirt at the location, as Martin had indicated. While the body had deteriorated, there was no evidence that he had been attacked and it is thought likely he had died of natural causes, as she also indicated.[12][13]

In 2001, the body of Thomas Braun was located by Perth based Aboriginal clairvoyant Leanna Adams in Western Australia. Police had initially been unable to find the body. The family of Braun had been told to contact Adams, an Aboriginal psychic who lived in Perth. The Braun family had requested police to do a search based on Adams’ directions but they had not assisted. Adams went to Alice Springs in the Northern Territory, and took the family members directly to Braun’s remains, a spot high on a ridge west of the town, some 20 kilometres out. The remains were not immediately identifiable. Police later confirmed the remains to be his using DNA testing.[14][15][16][17]

In Sydney, Australia in 1996, a Belgian born Sydney psychic, Phillipe Durant was approached by the fiance of missing Paula Brown to help locate her. Durante told police the location of the body of Brown. She was found less than two kilometres of the spot he had indicated in Port Botany, New South Wales, by a lorry driver who came across the body. "Even though the body was discovered purely by chance, the speculation by a clairvoyant appears to have been uncannily accurate," a police spokeswoman conceded. Durant had used a plumb bob and a grid map, combined with some hair from the victim.[18][19][20][21]

Official police responses

Many police departments around the world have released official statements saying that they do not regard psychics as credible or useful on cases.

In Australia

Australian police, officially, in general have said that they do not accept assistance from psychics. This was in response to an Australian TV show Sensing Murder in which self-professed psychics attempt to crack unsolved murders.[22] Western Australian Police have a policy that they do not contact psychics for assistance with investigations, however they will accept information contributed by psychics.[23] An unnamed Australian federal police officer was suspended following his seeking the aid of a clairvoyant in regard to death threats made against Prime Minister John Howard. A federal police spokesman said they do "not condone the use of psychics in security matters."[24] There are still cases of psychics professing to have trained with the Australian police and failing to provide credible evidence to support qualifications or evidence of being a psychic profiler or intuitive profiler with the Australian police.[25]

While official policy for police forces in Australia does not advocate the use of psychics for investigations, one former Detective Senior Constable, Jeffrey Little, has said police do use them "even though they officially say they don't".[26] Additionally, police in NSW have used psychic Debbie Malone on a number of cases.[27][28] While no evidence she has supplied has solved murders or missing investigations on their own.,[27][29][30] her evidence had been used to corroborate theories, and in one case, included in a coroner's brief on a case.[27] Little, in reference to one case she assisted on, felt her description of what happened was "exceptional", other officers also had been impressed by her assistance, while yet other NSW officers felt she had not helped solve any cases. Sergeant Gae Crea and Detective Sergeant Damian Loone, state that she did not give them anything the police and the public didn't already know. Crea recounts "I've dealt with a lot of psychics, but no one has ever said, 'I can see where the body is buried and I'll take you there'".[27][29][31]

In New Zealand

New Zealand police have said "spiritual communications were not considered a creditable foundation for investigation."[32]

In the United Kingdom

In 2006, 28 British police forces responded to a query from the Association for Rational Inquiry to say that they did not and have never used psychics, one force saying "We are unaware of any inquiries significantly progressed solely by information provided by a psychic medium."[1] In 2009, when the Metropolitan Police had denied the use of psychics and were then presented with emails suggesting the use of a psychic they made a press statement authorized by the senior investigating officer that was much more ambiguous: "We do not identify people we may or may not speak with in connection with inquiries. We are not prepared to discuss this further."[33]

In the United States

A 1993 survey of police departments in the 50 largest cities in the United States revealed that a third of them had accepted predictions from psychic detectives in the past, although only seven departments treated such information any differently from information from an ordinary source. No police department reported any instances of a psychic investigator providing information that was more helpful than other information received during the course of a case, since any information has to be proved, only information matching other evidence could be used.[34][35] A follow-up study looking at small and medium-sized cities in the United States, found that psychics were called upon by the police departments of those cities even less frequently than large cities.[36] A former senior investigator for the FBI has stated that psychics may be used "as a last resort [and] as an investigative tool with caution"[37] for providing clues not directly admissible in the court of law such as a criminal's character, or the location of dead bodies.[38][39]

Scientific studies

A number of tests have been conducted on psychics detectives, using control groups, to try to establish any psychic ability relating to crime solving. One of the earliest was carried out by Dutch Police officer, Fillipus Brink in 1960. He conducted a year-long study of psychics, but found no evidence of any crime-solving abilities.[40] Another study was conducted in 1982 where evidence from four crimes was given to three groups: psychic detectives, students and police detectives. The clues related to four crimes, two crimes that had been solved, and two that had not been. The study found no difference between the three groups in ability to indicate what crimes had been committed by looking at the evidence.[41] Some flaws in the scientific method were apparent in these two tests. A further test was conducted in 1997, this test focusing on improving on the scientific methods used in the previous tests. This study used two groups, one consisting of three students from the University of Hertfordhire, the other group consisting of three psychics (two psychic detectives and a non-detective psychic who had a media profile and had been endorsed by police due to his abilities). The two groups were shown three objects associated with three serious crimes. They then advocated theories, but once again, no difference was found in terms of the accuracy between the two groups.[42]

To assess the claims of psychic crime-solving, the Committee for the Scientific Investigation of Claims of the Paranormal (now Committee for Skeptical Inquiry) established a task force of investigators.[43] The group recorded many failures by psychics to provide useful information to criminal investigators, and felt that psychics may use "retrofitting" (or after-the-fact matching), offering vague clues, and then trying to retroactively fit them to details that are only discovered later.[43] In addition to cases of retrofitting, the apparent use of cold reading (a psychic's fishing for information while appearing to gain it paranormally), exaggeration, and examples where the psychic has used non-psychic sources of information, were also reviewed.[43][44]

In 2008 while being interviewed for the Skeptiko podcast, managing editor of Skeptical Inquirer Magazine, Ben Radford challenged the host Alex Tsakiris to give him the best case for evidence of a psychic solving a crime. Tsakiris had "repeatedly accused skeptical investigators of purposely choosing the weakest cases". Radford agreed to investigate in depth a case from any period in history, around the world, "that presented the gold standard for evidence". Tsakiris chose psychic Nancy Weber who in 2006 appeared on an episode of the Biography Channel Psychic Investigators. Weber claimed to have helped the New Jersey police solve the serial murders of Amie Hoffman and Dierdre O'Brien from 1982. The police arrested James Koedatich in 1983 who was later found guilty of serial murder. Psychic Investigators interviewed Weber as well as the two police detectives she worked with, Hughes and Moore, who verified Weber had given them information she could not have known.[45][46][47]

Radford spent the next nine months reviewing the case, he and Tsakiris re-interviewed the detectives as well as the psychic on the Skeptiko podcast. Radford discovered that the detectives had not kept their notes from the case and their story had changed since the TV show aired, in fact he found that their stories now contradicted the psychic's story. A further discovery by Radford using a New Jersey phone book from 1982 found that if the psychic had indeed given the detectives all the evidence she claimed she had, the police could have discovered the killer with a 15-minute search through the phone book. Radford believes that the police and the psychic "simply fell prey to confirmation bias".[48][49]

Critical commentary

ABC's Nightline Beyond Belief program for 17 August 2011 featured psychic detectives and their involvement with the case of Ali Lowitzer. Typical of missing person cases, families are approached by people claiming they will help bring the missing home. "They told me, I see trees, water, dirt...but it is all very vague" according to Susan Lowitzer a mother whose daughter has been missing since 26 April 2010. Retired FBI agent and ABC consultant Brad Garrett states, "In 30 years...I have never seen a psychic solve a mystery". JREF investigator and mentalist Banachek feels that psychic detectives take advantage of families, "...because of fame and money, [they] step in and try to act like an authority". Banachek believes that not all psychic detectives are frauds, some are self-deluded and believe they are helping, but they "send police on wild-goose chases wasting precious time and resources". Psychic Georgia O'Conner states that Ali is dead, she was tortured and her body dismembered. When asked by ABC's JuJu Chang how can she tell parents this kind of information when she might be wrong, O'Conner replies "I can't let my ego get in the way of what I see". Despite the attention from psychic detectives Ali Lowitzer remains missing from her Spring, TX home.[50][51]

No psychic detective has ever been praised or given official recognition by the FBI or US national news for solving a crime, preventing a crime, or finding a kidnap victim or corpse.[52][53]

The Australian Institute of Criminology, Australia's official crime research agency, advises parents of missing children not to resort to using psychics who approach them.[54] Former FBI analyst and profiler Clint Van Zandt has criticized the use of psychic detectives and has stated that "What happens many times is that professed psychics allow themselves the benefit of 20/20 hindsight. After the case is solved, they make their previously vague predictions somehow fit the crime and the criminal."[55] A detailed 2010 study of Sylvia Browne predictions about 115 missing persons and murder cases has found that despite her repeated claims to be more than 85% correct, "Browne has not even been mostly correct in a single case."[56]

Belief in psychic detectives

Psychologists, researchers and other authors have posited a number of possible explanations for the belief that some can provide valuable crime information from psychic abilities.[57][58] The possible explanations include confirmation bias (or our natural tendency to favor information to confirm our beliefs), wishful thinking (which is the act of making decisions based upon what is appealing rather than reasoned), and retrofitting (or retroactively refining the specifics of a prediction after the facts are revealed).[58] The act of reinterpreting vague and nebulous statements made by psychic detectives is also referred to as the multiple out.[59] Taking advantage of these cognitive limitations is the practice of cold reading which creates the illusion of knowing specific information.[57] Additionally, police detectives and other authors suggest that psychic detectives appear successful due to making common-sense or high-probability predictions such as finding bodies at dump sites or "near water." [38][58]

While police departments claim they do not seek out or use psychics to solve crimes, they must follow up on all credible tips. If police do not refute this theory then "many in the public continue to believe that psychics are secretly employed by law enforcement" If the police state they do not use psychics then psychics claim that the police do not want to "share the credit" and are just covering up.[60][61]

Finally, the use of psychics may simply reduce anxiety and fill the emotional needs of individuals who must be experiencing great stress.[62][63]

In fiction

There is a long history of psychic detectives in horror and crime fiction, and in other genres as well. One of the earliest forms of the genre was the character Flaxman Low, created in 1897 by mother and son Kate and Hesketh Hesketh-Prichard.[64] Other examples include Jules de Grandin (created by Seabury Quinn), Doctor Occult (created by Jerry Siegel and Joe Shuster) and Agent Jasi McLellan created by Cheryl Kaye Tardif.

The popular TV show, Psych features a charlatan paranormal detective helping the Santa Barbara police with crimes that range from robberies to kidnappings to murders. However, the man actually uses an acute sense of observation he acquired as a child; a photographic memory; excellent vision; and deduction and reasoning to solve cases, making a running gag of his claim to be a psychic.

In Douglas Adams's Dirk Gently novels, the titular character—a "holistic" detective—is implied to have psychic powers on occasion. One incident involved Gently attempting to scam his university classmates into paying for a set of answers to an exam, supposedly obtained using psychic powers that Gently did not think he had. To his surprise, the answers he provided, which he thought he had produced randomly, turned out to be entirely correct. He was expelled as a result.

Peter F. Hamilton wrote a series of books about the ex-military psychic Greg Mandel. In the series, Greg was a retired special forces soldier created as part of an elite spec-ops unit, the Mindstar Brigade, in the 'English Army', having fought a vicious war in Turkey and helped a rebellion overthrow the People's Socialist Party at home. Having won the rebellion he then retired to Rutland, suddenly being called out of retirement by the rich heirhess Julia Evans to use his psychic talents to find the root of industrial espionage against her company, Event Horizon [an organisation that was also integral to the overthrow of the communist government]. The series not only focuses on Greg's abilities, but also the abilities of other psychics created as part of the Mindstar Programme, the effects of social and economic change throughout the 21st century, global warming and rapid scientific advances. Greg regularly uses his abilities both for interrogation and as an offensive weapon.

The episode "Bart the Murderer" of The Simpsons depicts a psychic joining the hunt to find Principal Skinner.

The episode "Cartman's Incredible Gift" of South Park depicts a skeptical view of psychic detectives.

The Japanese manga and anime series YuYu Hakusho depicts a teenage boy named Yusuke Urameshi working as a Spirit Detective, which is a human who hunts down demons using supernatural abilities.

See also


  • Richard Wiseman, Donald West & Roy Stemman: An experimental test of psychic detection. In: Journal of the Society for Psychical Research. 1996, 61(842), 34-45 (PDF)


  1. ^ a b Jackson, John (2006-03-29). "Do the UK police use psychics?". Association for Critical Thinking (formerly known as the Association for Rational Inquiry). Retrieved 6 March 2014. 
  2. ^ "Carla Baron, Psychic Detective?". Independent Investigations Group. Retrieved 2 September 2011. 
  3. ^ Nickell, Joe (July–August 2005). "The Case of the Psychic Detectives". Skeptical Inquirer 29.4. Retrieved 2 September 2011. 
  4. ^ Ben Radford. "Psychic Tip on Long Island Serial Killer?". Discovery News. Retrieved 11 December 2011. 
  5. ^ Horwitz, Sari (11 July 2008). "Who Killed Chandra Levy". The Washington Post. Retrieved 29 August 2011. 
  6. ^ Twomey, Steve; Sari Horwitz (23 May 2002). "Chandra Levy's Remains Found in Park By Dog". The Washington Post. Retrieved 29 August 2011. 
  7. ^ "Psychic Sylvia Browne Wrongly Tells Missing Boy's Parents He's Dead". Retrieved 28 August 2011. 
  8. ^ "Sylvia Browne DEAD WRONG on CNN 360 Live Anderson Cooper 02". Retrieved 28 August 2011. 
  9. ^ "Psychic Powers Debunked in Shawn Hornbeck Case?". ANDERSON COOPER 360 DEGREES. Retrieved 28 August 2011. 
  10. ^ Arlington, Kim "Supernatural sleuths and the search for truth" The Sydney Morning Herald 30/12/2010, p4
  11. ^ Cuneo, Clementine, The Daily Telegraph, 13 August. Kiesha searches stumble on Corpse
  12. ^ Martinez, Liz. "Looking into the crystal ball" Law Enforcement Technology July 2004 Vol. 31 No. 7
  13. ^ Grace, Nancy CCN Report, 23 November 2005, CNNHN Aired 24 November 2005 - 20:00:00 ET
  14. ^ Butler, Paul Milton "DNA test proves body was Braun's" Centralian Advocate, 23/2/2003 p3
  15. ^ Wilson-Clarke, Charlie "Nyoongar Sees End to Tourist Mystery" The West Australian 14 December 2002
  16. ^ Morrison, Glenn "I know where Falconio’s body is" Northern Territory News 13 December 2002 p3
  17. ^ Toohey,Paul "Searching for Peter Falconio" The Bulletin 8 March 2006 Volume 124; Number 11
  18. ^ Harris, Sarah. "Did Paula speak from the grave? Investigators keep an open mind on psychics' claims in murder hunt" The Sunday Telegraph, 19 May 1996, Sunday
  19. ^ Warnock, Steve "Chilling vision came true; 'A life means nothing to some people'" The Sun Herald 19 May 1996 Sunday Pg. 36
  20. ^ No Author Information "Psychic's Pendulum Led Way" The Daily Telegraph (Sydney, Australia) 15 May 1996
  21. ^ Jones, Gemma "Forensic Psychics Get It Right Sometimes" The Daily Telegraph (Australia) 11 April 2006 Tuesday p 23
  22. ^ Crawford, Carly (2004-09-26). "Yard hunt for clues on Sarah". Sunday Herald Sun (Melbourne, Australia). Retrieved 25 May 2007. 
  23. ^ Cox, Nichole - Police Reporter "Psychic help not banned" 5 July 2009 Sunday Times (Perth)1 - Street, p 10
  24. ^ Shanahan, Leo; Duff, Eamonn; Koutsoukis, Jason (2006-04-09). "The police, the PM and the psychic". The Age (Melbourne, Australia). Retrieved 25 May 2007. 
  25. ^ Suranyi, Julianna; R. T. Carroll (2011-02-15). "Psychic Intuitive Profiling for Parents". "The Skeptics Dictionary" (Sydney, Australia). Retrieved 17 March 2011. 
  26. ^ Arlington, Kim. "Supernatural Sleuths and the Search for Truth" 30 December 2010 The Sydney Morning Herald, p4.
  27. ^ a b c d Kamper, Angela "Dead men do tell tales" Daily Telegraph, 1 - State p 30/5/2009 p32
  28. ^ Hasham, Nicole "Psychic's murder clues" Illawarra Mercury 10 September 2010
  29. ^ a b Cardy, Todd "Rayney Clue Hunt" 17/1/2010 Sunday Times p4
  30. ^ Thomson, Owen. "Eyes Wide Shut" 21/12/2003 Sun Herald p 21
  31. ^ "Dead men do tell tales after all, says clairvoyant Debbie Malone". Dead men do tell tales after all, says clairvoyant Debbie Malone. 2009-05-30. Retrieved 21 September 2011. 
  32. ^ "Police reject psychic advice". Bay Of Plenty Times (NZ newspaper). Retrieved 21 May 2007. 
  33. ^ Barnes, Hannah (2009-11-23). "Can psychics help to solve crime??". BBC. Retrieved 22 November 2009. 
  34. ^ Ayers Sweat, Jane; Mark W Durm (Winter 1993). "Psychics: Do Police Departments Really Use Them?". Skeptical Inquirer. Retrieved 4 March 2009. 
  35. ^ Radford, Benjamin (2010-05-10). "Missing Persons and Abductions Reveal Psychics' Failures". Science Daily. Retrieved 10 May 2010. 
  36. ^ Durm, Mark; Joe Nickell; Jane Ayers Sweat (1994). Update: Psychics -- Do Police Departments Really Use Them in Small and Medium-Sized Cites?. Prometheus Books. pp. 224–235. ISBN 0-87975-880-5. 
  37. ^ John Douglas, Mark Olshaker, Mind Hunter: Inside the FBI's Elite Serial Crime Unit, Pocket Books; 11th THUS edition (1 August 1996), p.137 ISBN 0-671-52890-4
  38. ^ a b Robert Kessler, Tom Schachtman, Whoever Fights Monsters: My Twenty Years Tracking Serial Killers for the FBI, St. Martin's Paperbacks (15 March 1993) p.270. ISBN 0-312-95044-6
  39. ^ Noreen Renier, A Mind for Murder: The Real-Life Files of a Psychic Investigator, Hampton Roads Pub Co; Revised edition (9 May 2008) p.13 ISBN 1-57174-573-4
  40. ^ Wiseman, Richard and West, Donald "An Experimental Test of Psychic Detection" The Police Journal p 19
  41. ^ Wiseman, Richard and West, Donald "An Experimental Test of Psychic Detection" The Police Journal p 20
  42. ^ Wiseman, Richard and West, Donald "An Experimental Test of Psychic Detection" The Police Journal p 24
  43. ^ a b c Nickell, Joe (1994). Joe Nickell, ed. Psychic Sleuths: ESP and Sensational Cases. Amherst, NY: Prometheus Books. p. 251. ISBN 0-87975-880-5. 
  44. ^ Nickell, Joe (2007). Adventures in Paranormal Investigation. Lexington, KY: University Press of Kentucky. p. 320. ISBN 0-8131-2467-0. 
  45. ^ "The Great Psychic Detective Challenge". Skepticality. 2009-05-19. Retrieved 7 January 2012. 
  46. ^ "151. Science Journalist Ben Radford "Believes" Psychic Detective". Skeptiko. 2011-11-01. Retrieved 7 January 2012. 
  47. ^ Radford, Ben (March–April 2010). "The Psychic and the Serial Killer: Examining the 'Best Case' for Psychic Detectives". Skeptical Inquirer (Committee for Skeptical Inquiry) 34 (2): 32–37. 
  48. ^ "Episode #017". Desert Air. 2011-12-04. Retrieved 7 January 2012. 
  49. ^ "153. Skepticality Hosts Skeptiko, Blake Smith, Ben Radford, Karen Stollznow". Skeptiko – Science at the Tipping Point. 2011-11-16. Retrieved 7 January 2012. 
  50. ^ "Primetime Nightline: Beyond Belief Psychic Power". ABC Nightline. 17 August 2011. Retrieved 19 August 2011. 
  51. ^ "Alexandria Lowitzer". April 2010. Retrieved 4 September 2011. 
  52. ^ The Blue Sense: Psychic Detectives and Crime by Arthur Lyons and Marcello Truzzi, Ph. D., Mysterious Press, 1991
  53. ^ Psychic Sleuths: ESP and Sensational Cases by Joe Nickell, Prometheus Press, 1994
  54. ^ Australian Institute of Criminology (2004). "Help for children and families". Missing children : advice, information and preventative action. Archived from the original on 2007-08-30. Retrieved 31 March 2007. 
  55. ^ Van Zandt, Clint (17 August 2005). "Shoe leather, not sixth sense, breaks cases open". MSNBC. Retrieved 10 May 2007. 
  56. ^ Shafer R, Jadwiszczok A. "Psychic defective: Sylvia Browne's history of failure." Skeptical Inquirer 34(2):38-42, 2010
  57. ^ a b Wiseman, Richard (2011). Paranormality: Why we see what isn't there. Spin Solutions. ISBN 978-0-9568756-2-4. 
  58. ^ a b c Radford, Benjamin (2010). Scientific Paranormal Investigation. Rhombus Publishing. p. 185. ISBN 978-0-936455-11-2. 
  59. ^ Hines, Terence (2003). Pseudoscience and the Paranormal. Prometheus Books. p. 59. ISBN 1-57392-979-4. 
  60. ^ Ben Radford. "Psychic led police to Texas mass grave hoax? Police can't ignore a lead or tip even if it comes from a psychic". MSN. Retrieved 11 December 2011. 
  61. ^ Ben Radford. "Psychic Fiasco: Texas Mass Murder Raid a Hoax". Discovery News. Retrieved 11 December 2011. 
  62. ^ Alcock, James; Nickell, Joe (1994). Afterword: An Analysis of Psychic Sleuths' Claims. Prometheus Books. pp. 179–180. ISBN 0-87975-880-5. 
  63. ^ Shermer, Michael (1997). Why People Believe Weird Things. W.H. Freeman and Company. p. 5. ISBN 0-7167-3090-1. 
  64. ^ Parker, Eric (1924). Hesketh Prichard D.S.O., M.C.: Explorer, Naturalist, Cricketer, Author, Soldier: A Memoir. T Fisher Unwin. pp. 36–42.