Experience Stern | News & Events

Excerpt from The Sun -- "Discovered in 1999, the effect was identified when a Mr McArthur Wheeler robbed two banks in Pittsburgh, USA, in broad daylight without a balaclava masking his face. Later that day, clear footage of Wheeler was all over the local news. He had smeared lemon juice on his face, thinking it would make him invisible to security cameras. Wheeler knew that lemon juice was used as invisible ink in letter writing but was stupid enough to believe it would hide his identity. This case came to the attention of David Dunning, a Cornell University psychology professor and his student Justin Kruger. And eventually it became the first recorded example of the Dunning-Kruger Effect."

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