Plays from YouTube

Inattentional Blindness

Did You See the Gorilla?

Count the passes by the team in white, and a gorilla can walk right past you. In the 1999 study by Simons and Chabris, about half of the viewers never noticed it, and in 2013, 20 of 24 radiologists missed a gorilla hidden in a lung scan.

Sources (2)
  1. Simons & Chabris, "Gorillas in our midst: sustained inattentional blindness for dynamic events", Perception 28 (1999) (opens in a new tab)
  2. Drew, Võ & Wolfe, "The Invisible Gorilla Strikes Again", Psychological Science (2013) (opens in a new tab)

More Thinking traps