When viewers are later asked if they saw anything unusual, many are shocked to find they missed such a conspicuous event. Why Does This Happen? selective attention test
About halfway through the video, a person in a full gorilla suit walks into the center of the action, stops, thumps their chest, and walks off after about nine seconds. Invisible Gorilla Basketball Video
Despite the gorilla being clearly visible, approximately half of all viewers fail to notice it . When viewers are later asked if they saw