Change Blindness

Imagine you are watching a movie in which an actor is sitting in a cafeteria with a peak slung over his shoulder. The camera then cuts to a close-up and his jacket is instantaneously over the back of his chair. You might think that everyone would notice this diaphanous editing mistake. Yet, recent research on optic shop has found that people are surprisingly poor at noticing large diverges to objects, photographs, and motion pictures from one instant to the next (see Simons & Levin, 1997 for a review). Although researchers lease long noted the existence of such miscellanea cecity (e.g., Bridgeman, Hendry, & Stark, 1975; French, 1953; Friedman, 1979; Hochberg, 1986; Kuleshov, 1987; McConkie & Zola, 1979; Pashler, 1988; Phillips, 1974), recent demonstrations by John Grimes and others have light-emitting diode to a renewed interest in the problem of change detection. The new theoretical ideas and paradigms resulting from this resurgence in the study of visual memory are the focus of this special issue.

       In his demonstration, Grimes (1996) showed observers photographs of inherent scenes for a later memory test. While they were studying an image, scan from one object to another, details of the scene were changed during a saccade. Observers lots missed surprisingly large changes (e.g., 2 people exchanging heads).



This conclusion was consistent with earlier work on the failure to mingle information across saccades (e.g., Henderson, 1997; Irwin, 1991; Rayner & Pollatsek, 1983), but in some ways was a more striking demonstration because the changes were so understandably visible to observers when the change emitred during a fixation. Furthermore, Grimes used photographs rather than naive novel objects or letters, thereby bringing demonstrations of change blindness closer to everyday perceptual experience.

       More recently, several labs have shown that change blindness for objects in natural scenes can occur during a fixation if the effects of a saccade are simulated by disrupting the...If you want to get a full essay, launch it on our website: Orderessay



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