The current “noise” about whether President Obama was really born in the United States may seem a view from the lunatic fringe, but we have long been captive to various urban myths, like the Satanic symbolism in a corporate logo or spider eggs in bubble gum.  It makes one wonder, how come?

In an interview this month on NPR, Princeton neuroscience professor Sam Wang, co-author of  “Welcome to Your Brain: Why You Lose Your Car Keys but Never Forget How to Drive and Other Puzzles of Everyday Life,” offered three reasons why we might believe things that just aren’t true.

According to Professor Wang, we know things — like the capital of Wisconsin — but we don’t always remember where we first heard it.  “As we recall things,” he said,”it’s currently believed that we rewrite them a little bit so that we gradually separate a fact from context.”  He called it “source amnesia.”

And when we begin not with fact — Madison! — but with fiction, things can roll down hill even faster.  There is “biased assimilation” which causes us to accept statements, true or not, that align with beliefs and “we tend to question or be more critical or even reject statements that don’t fit with our beliefs.”

Getting people — as voters, consumers or parents — to act differently may not only be about the facts they are given, but the way they get them and how those facts are reinforced.

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