Wednesday, January 3, 2018

If you tell a lie often enough people will think it's true.



Of all the things that I learned in 2017, this one surprised me the most.  Researchers call it the Illusory Truth Effect. 

The seminal study on the subject was done in 1977, so it's not exactly new news.  And, the basic effect has been studied and replicated dozens of times since then.  But the recent emergence of a variety of strong held beliefs based on falsehoods has led to people to take a closer look at the phenomenon.

The bottom line is that repetition of a statement makes it easier to process relative to new statements.  This leads people to the sometimes false conclusion that the initial statement is more truthful.  The more times something is repeated the more we perceive it as true.  Even if it isn't.  (Fazio, Brashier, Payne & Marsh, 2015)

Essentially what is happening is that we are mistaking familiar for true, because the more times we hear something the more comfortable we become with it.  Then our brains convince us to believe it is true because we feel it is true.  (Tsipursky, 2017)

Knowing all this I probably shouldn't have been surprised when I read last week that 44% of Republicans think Trump repealed Obamacare. (Kliff, 2017) 

And yet, I still was.


Fazio, L., Brashier, N., Payne, B., Marsch, E. (2015, August 24)  Knowledge Does Not Protect Against Illusory Truth.  Journal of Experimental Psychology. Retrieved January 3, 2018, from

Tsipursky, G. (2017, October 27)  A brain science expert explains how to deprogram truth-denying Trump supporters.  rawstory.com.  retrieved January 3, 2018, from

Kliff, S. (2017, December 27)  44 Percent of Republicans think Trump repealed Obamacare.  vox.com.  Retrieved January 3, 2018, from

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