Repetition blindness under minimum memory load: Effects of spatial and temporal proximity and the encoding effectiveness of the first item |
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Authors: | Chun R. Luo Alfonso Caramazza |
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Affiliation: | 1. Department of Psychology, Wesleyan University, 06459-0408, Middletown, CT 2. Department of Psychology, Harvard University, 02138, Cambridge, MA
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Abstract: | Repetition blindness (RB) refers to the reduced performance in reporting a repeated as opposed to a nonrepeated item in rapid serial visual presentation. In Experiment 1, we found RB for two-item stimuli in uncertain locations. The magnitude of RB decreased significantly with increases in interstimulus interval, but not with increases in spatial separation, indicating that RB is determined primarily by temporal factors. In Experiment 2, we found RB when subjects were required to report only the second of two successively presented items. The magnitude of RB increased with the duration of the first item, indicating that RB is determined by the encoding effectiveness of the first item. The results of this study collectively indicate that RB is not a memory or a sensory phenomenon, but rather a perceptual phenomenon occurring at the stage of identity encoding. The findings also undermine the arguments (Kanwisher, 1987) that have been offered in favor of the type-token binding failure hypothesis and indicate instead that type-node refractoriness may be the cause of RB. |
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