Look up debunk in Wiktionary, the free dictionary.

A debunker is a person who attempts to expose or discredit claims believed to be false, exaggerated, or pretentious.[1] The term is often associated with skeptical investigation of controversial topics such as U.F.O.s, claimed paranormal phenomena, cryptids, conspiracy theories, alternative medicine, religion, or exploratory or fringe areas of scientific or pseudoscientific research.

According to the Merriam-Webster online dictionary, to "debunk" is defined as:

  1. To expose the falseness or hollowness of (a myth, idea, or belief).
  2. To reduce the inflated reputation of (someone), esp. by ridicule: "comedy takes delight in debunking heroes".

If debunkers are not careful, their communications may backfire – increasing an audience's long-term belief in myths. Backfire effects can occur if a message spends too much time on the negative case, if it is too complex, or if the message is threatening.[2]


The American Heritage Dictionary traces the passage of the words bunk (noun), debunk (verb) and debunker (noun) into American English in 1923 as a belated outgrowth of "bunkum", of which the first recorded use was in 1828, apparently related to a poorly received "speech for Buncombe County, North Carolina" given by North Carolina representative Felix Walker during the 16th United States Congress (1819–1821).[3]

The term debunk originated in a 1923 novel Bunk, by American journalist and popular historian William Woodward (1874–1950), who used it to mean to "take the bunk out of things."[4]

The term "debunkery" is not limited to arguments about scientific validity; it is also used in a more general sense at attempts to discredit any opposing point of view, such as that of a political opponent.

Backfire effects

The authors of the Debunking Handbook warn that a failed debunking can actually worsen misconceptions. They recommend simple, positive, and emotionally sensitive education (e.g. bolstering the learner's ego, or avoiding threatening words).

Australian Professorial Fellow Stephan Lewandowsky[5] and John Cook, Climate Communication Fellow for the Global Change Institute at the University of Queensland (and author at[6] co-wrote Debunking Handbook,[2] in which they warn that debunking efforts may backfire. Backfire effects occur when science communicators accidentally reinforce false beliefs by trying to correct them.

Cook and Lewandowsky offer possible solutions to the backfire effects as described in different psychological studies. They recommend spending little or no time describing misconceptions because people cannot help but remember ideas that they have heard before. They write "Your goal is to increase people's familiarity with the facts."[2][7][8] They recommend providing fewer and clearer arguments, considering that more people recall a message when it is simpler and easier to read. "Less is more" is especially important because scientific truths can get overwhelmingly detailed; pictures, graphs, and memorable tag lines all help keep things simple.[2][9]

The authors write that debunkers should try to build up people's egos in some way before confronting false beliefs because it is difficult to consider ideas that threaten one's worldviews[2][10] (i.e., threatening ideas cause cognitive dissonance). It is also advisable to avoid words with negative connotations.[2][11] The authors describe studies which have shown that people abhor incomplete explanations – they write "In the absence of a better explanation, [people] opt for the wrong explanation". It is important to fill in conceptual gaps, and to explain the cause of the misconception in the first place.[2][12] The authors believe these techniques can reduce the odds of a "backfire" – that an attempt to debunk bad science will increase the audience's belief in misconceptions.

Notable debunkers


See also


Look up debunk in Wiktionary, the free dictionary.
  1. "Debunker". Unabridged. Retrieved 2007-09-26. "to expose or excoriate (a claim, assertion, sentiment, etc.) as being pretentious, false, or exaggerated: to debunk advertising slogans."
  2. 1 2 3 4 5 6 7 Cook, J.; Lewandowsky, S. (2011). The Debunking Handbook (PDF). St. Lucia, Australia: University of Queensland. ISBN 978-0-646-56812-6. OCLC 768864362.
  3. "debunk". The American Heritage Dictionary of the English Language (4th ed.). Boston: Houghton Mifflin. 2000.
  4. Woodward, William (1923). Bunk. Harper & Brothers. ISBN 0-306-70846-9.
  5. "Stephan Lewandowsky". Cognitive Science Laboratories, University of Western Australia. Retrieved December 2011. Check date values in: |access-date= (help)
  6. "About". Skeptical Science. Retrieved December 2011. Check date values in: |access-date= (help)
  7. Skurnik, I.; Yoon, C.; Park, D.; Schwarz, N. (2005). "How warnings about false claims become recommendations". Journal of Consumer Research. 31 (4): 713–724. doi:10.1086/426605.
  8. Weaver, K.; Garcia, S.M.; Schwarz, N.; Miller, D.T. (2007). "Inferring the popularity of an opinion from its familiarity: A repetitive voice sounds like a chorus". Journal of Personality and Social Psychology. 92 (5): 821–833. doi:10.1037/0022-3514.92.5.821. PMID 17484607.
  9. Schwarz, N.; Sanna, L.; Skurnik, I.; Yoon, C. (2007). "Metacognitive experiences and the intricacies of setting people straight: Implications for debiasing and public information campaigns". Advances in Experimental Social Psychology. Advances in Experimental Social Psychology. 39: 127–161. doi:10.1016/S0065-2601(06)39003-X. ISBN 9780120152391.
  10. Nyhan, Brendan; Reifler, Jason (June 2010). "When corrections fail: the persistence of political misperceptions". Political Behavior. Springer. 32 (2): 303–330. doi:10.1007/s11109-010-9112-2. Pdf.
  11. Hardisty, D.J.; Johnson, E.J.; Weber, E.U. (1999). "A dirty word or a dirty world?: Attribute framing, political affiliation, and query theory". Psychological Science. 21 (1): 86–92. doi:10.1177/0956797609355572. PMID 20424028.
  12. Ecker, U.K.; Lewandowsky, S.; Tang, D.T. (2011). "Explicit warnings reduce but do not eliminate the continued influence of misinformation". Memory & Cognition. 38 (8): 1087–1100. doi:10.3758/MC.38.8.1087.
  13. "Area parents seek answer for Autism", The Times Leader, April 1, 2002, "That is coincidence, said Dr. Stephen Barrett of Allentown, a veteran debunker and operator of"
  14. Houdini and the spiritualists, Summit Daily News, November 3, 2007, "Houdini himself wouldn’t have believed in his second coming anyway, because he didn’t believe in spirit manifestations. In fact, he spent much of his life and career debunking spiritualists and mediums — an admirable mission that history and forensic specialists now tell us probably led to his untimely death at the age of 52."
  15. "Pseudoscience, Skepticism To Make A Close Encounter", Seattle Times, June 12, 1994
  16. Review/Theater; "Penn and Teller Offer Several Variations On a Magic Theme", New York Times, April 4, 1991, "As debunkers, they seek to remove the mystique from magic, to demonstrate the digitation behind the presti."
  17. "Houdini Museum". Retrieved January 22, 2011.
  18. Williams, Michael. "TNSJournal". Retrieved October 29, 2014.
  19. The wizard gets a windfall—even the Amazing Randi needs advice on how to keep his $272,000 prize from vanishing, CNN Money, September 1, 1986, "Randi began his campaign against fakes in earnest in 1964, during a stint as the host of a radio talk show in Manhattan. He had become disturbed by the number of listeners phoning in with such flummery as tales of self-styled clairvoyants' uncannily correct forecasts. Gradually, his work as a debunker began to rival his show-business career, gathering momentum in the early 1970s, when Uri Geller caught Randi's attention."
  20. "Obituaries; Betty Hill, 85; Claim of Abduction by Aliens Led to Fame", Los Angeles Times, Oct 24, 2004, "Carl Sagan, the Pulitzer Prize-winning astronomer, was among the Hills' debunkers, yet he considered their story noteworthy."
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