NAMING AND LOCATING SIMULTANEOUSLY AND SEQUENTIALLY PRESENTED LETTERS
NAMING AND LOCATING SIMULTANEOUSLY AND SEQUENTIALLY PRESENTED LETTERS
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DOI:
10.3758/bf03199693
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发表时间:
1977-01-01
期刊:
影响因子:
--
通讯作者:
KRUMHANSL, CL
中科院分区:
文献类型:
--
作者:
KRUMHANSL, CL
Two letters varying in level of confusability were presented to humans either simultaneously for 75 ms or sequentially for 75 ms each in adjacent retinal locations. The retinal locus of presentation varied from trial to trial, and subjects identified and located the presented letters. Identification accuracy was higher on nonconfusable than on confusable letter pairs in the simultaneous condition, but not in the sequential condition. Inhibition between similar or identical features shared by confusable letters occurred only when letters were presented simultaneously. A relative position effect, with performance on the peripheral letter higher than on the central letter, was found for simultaneously and 2nd sequentially presented letters, but not for 1st sequentially presented letters. This was interpreted in terms of the assumption that feature perturbations, with foveal perturbations more likely than peripheral perturbations, affect simultaneously and 2nd-presented letters, but not 1st-presented letters. The pattern of results for relative location accuracy showed many of the same effects as identification performance. A model assuming location errors reflect feature transpositions was outlined and was able to account for the absolute and relative location results and the correlation between relative location and identification accuracy.