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Abstract:
We investigated the mechanism(s) that underlie priming of
novel visual objects by modeling both reaction time and accuracy
using simple accumulation models of information processing. After
viewing possible and impossible objects for 5 seconds in the study
phase and making simple direction facing decisions, subjects were
tested on possible and impossible objects that were either new or
seen previously in the study phase. Subjects performed the object
decision task, discriminating between possible and impossible
objects. When reaction time was stressed, typical findings were
replicated. Priming was seen as greater accuracy over baseline for
possible objects, but no analogous priming effect was seen for
impossible objects. When accuracy was stressed, subjects performed
at approximately 100 percent correct and showed no priming in
accuracy. A priming effect was seen in reaction time for possible
objects but not for impossible objects. In previous research,
similar results have been explained in terms of increased
sensitivity, response bias, sensory bias and/or explicit memory
contamination. We use information processing models in single and
multiple system frameworks to explicitly test the potential
interpretations of these results.
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