A capacity allocation model for reaction time

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M. Shaw and P. Shaw (see record 1977-30856-001) presented a quantitative model of selective attention and visual search in which the probability of a correct response depends on the total capacity available and its allocation to visual field locations. The normative model assures that capacity is allocated so as to maximize probability of a correct response. This article generalizes that model to reaction time data. In the normative model, capacity is allocated to minimize average response time; this also maximizes probability of a correct response. In each of 2 experiments (with a total of 14 undergraduates) to test the model, 2 probability functions were used to select the target location. The fit of the model to the data from the viewpoint of other information processing models is also considered. (23 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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