The attentional demands of negation in a memory-scanning task

Memory and Cognition - Tập 3 - Trang 319-324 - 1975
James H. Howard1
1Brown University, Providence

Tóm tắt

Subjects were run in a Sternberg recognition memory task modified to occasionally require a transformation prior to response. The transformation was similar to logical negation since onplus or nontransformed trials subjects responded “yes” if the probe was from the current memory set and “no” otherwise, while onminus or transformed trials subjects responded “no” to memory set probes and “yes” to nonmemory set probes. Two models proposed to account for the effects of logical negation were compared: The encoding and comparison model predicts that logical negation requires an additional processing stage, while the capacity sharing model argues that negation adds a processing stage and also retards the rate of memory search. The results indicated that minus probes had 50% larger mean reaction time by set size slopes than the corresponding plus probes. This finding offers clear support for the capacity sharing model.

Tài liệu tham khảo

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