Common
Inattentional blindness
Condition of failing to see something in plain view
Inattentional blindness
Inattentional blindness or perceptual blindness (rarely called inattentive blindness) occurs when an individual fails to perceive an unexpected stimulus in plain sight because their attention is focused elsewhere, rather than any vision defects or deficits. When it becomes impossible to attend to all the stimuli in a given situation, a temporary "blindness" effect can occur in which individuals fail to see unexpected but often salient objects or stimuli. Inattentional blindness is similar to change blindness in which the observer fails to notice changes that occur slowly in a scene. The term was chosen by Arien Mack and Irvin Rock in 1992 and was used as the title of their book of the same name, published by MIT Press in 1998, in which they describe the discovery of the phenomenon and include a collection of procedures used in describing it. A famous study that demonstrated inattentional blindness asked participants whether or not they noticed a person in a gorilla costume walking through...
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