Encoding and use of detail information in picture recognition

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Abstract

20 undergraduates participated in a yes/no picture recognition experiment in which exposure time varied from 50 to 1,000 msec at the time of initial study. Following each study trial, 10 Ss, the detail at study and test (ST) group, reported whether they had observed a detail in the picture that they thought might help in subsequent recognition. The other 10 Ss, the detail at test only (T) group, did not attempt to name details during study. All Ss reported at the time of each test picture whether they were basing their yes/no recognition response on a specific detail in the picture or on the picture's general familiarity. Results support a model that assumed that (a) there is a constant probability of encoding a detail during each successive unit of time at study and (b) a detail is named at test either if it was encoded at study or with some bias probability. ST Ss showed superior recognition memory performance relative to T Ss. Within the context of the aforementioned model, this superiority stems from 2 sources: ST Ss encoded details at a faster rate than did T Ss, and an encoded detail provided a better discriminative feature for ST Ss. (30 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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