Selective attention test

The viewers of the film are instructed to count the number of passes made by the white team, ignoring the black players.

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The Explanation:

Intense focusing on a task can make people effectively blind, even to stimuli that normally attract attention. The most dramatic demonstration was offered by Christopher Chabris and Daniel Simons in their book The Invisible Gorilla.

From the article about multi-tasking, explained by Daniel Kahneman.

Pratyush Mittal @pratyush