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Abstract:
Psychology Department, UCLA, CA. Remember-Know (R-K)
judgments are commonly used to assess conscious recollection of the
study episode during recognition. In addition, these judgments have
been used to assess the neural substrates of different forms of
declarative memory. The purpose of the present study was to examine
how the structure of the decision-making process and available
response categories would affect R and K judgments. At test we
varied whether participants judged items as R, K or New (1-step) or
first made an old-new judgment and then made the R-K decision for
the recognized items (2-step). Both groups effectively
discriminated old from new items with R responses. Only the 1-step
group did not discriminate between old and new items using K
responses, primarily because of an increased K false alarm rate.
When "Guess" was an available response category the 1-step group
was able to discriminate using the K response, however K responses
remained more accurate in the 2-step group due to a lower false
alarm rate. K response criteria appeared to be extremely sensitive
to testing procedure. In contrast, R responses appeared to be
relatively immune to the effects of testing procedure, suggesting
that the R label does reliably indicate a distinct form of
recognition memory.
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