November 27th, 2004 - Open Knowledge
Nov. 27th, 2004
03:45 pm - Change blindness
Simons and Levin (1998) produced a comparable effect in the real world with some clever choreography. In one study an experimenter approached a pedestrian on the campus of Cornell University to ask for directions. While they talked, two men rudely carried a door between them. The first experimenter grabbed the back of the door and the person who had been carrying it let go and took over the conversation. Only half of the pedestrians noticed the substitution. Again, when people are asked whether they think they would detect such a change they are convinced that they would - but they are wrong.
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