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21.
Magnitude estimations of the size and distance of a variable relative to a standard were obtained in the absence of distance cues. Estimates were provided by different groups under three conditions: (a) physical size and distance variant, visual angle of the variable constant and equal to the standard, (b) physical size constant, physical distance and visual angle of variable changing, and (c) physical distance constant, physical size and visual angle of the variable changing. The results in both experiments were very similar. In each case both size and distance estimates conformed to relative visual angle. The results are applied to an analysis of size-matches that are obtained when distance cues are eliminated. 相似文献
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Four experiments designed to investigate a visual search task are reported. In each experiment, subjects searched for either a two-dimensional shape rotated in depth among frontal-parallel distractors or a frontal-parallel shape among distractors that were rotated in depth. The principal independent variable was search-set size. In addition, over the four experiments, a variety of spatial arrangements and two axes of rotation in depth were sampled. The chief aim of the experiments was to adduce evidence bearing on the attentional demands of searching for depth. The slopes of the reaction-time (RT) functions were taken as diagnostic. Experiments 1–3 exhibited positive slopes for the RT-set-size function. These slopes appear to be due to a conscious adoption of a serial search strategy by the subjects. When this tendency was suppressed by the procedures of Experiment 4, the slope of the RT-set-size functions did not differ significantly from zero. We conclude that, in agreement with the findings of other studies, slant-in-depth can be detected preattentively. 相似文献
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William Epstein 《Attention, perception & psychophysics》1993,53(6):704-709
The representational stance in perceptual theory is described and its proper domain of application is examined. A decision rule for invoking representation is proposed but, although the rule is principled, its implementation is problematic. Despite the widespread appeaLof therepresentational stance, detailed working out of the position within perceptual theory is still needed. 相似文献
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Transmodal perceptual learning was examined in a canonical same/different paradigm. Subjects naive to vibrotactile stimulation and unfamiliar with the task were asked to discriminate sequentially presented shapes moving laterally across an aperture. On all trials, the shapes were presented either visually and then vibrotactually or in the opposite modality order, and on all trials the shapes moved in opposite directions. Analyses of the data revealed that although perceptual learning was evident in both groups, the rate of the learning was more rapid in the visual-vibrotactile group. This interaction of modality order and practice was significant and was considered in terms of E.J. Gibson's theory of perceptual learning and in terms of the constructs, suggested by J.J. Gibson, of available and accessible information-in-stimulation and the education of attention. 相似文献
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Seymour Epstein 《Journal of personality》1997,65(1):3-32
ABSTRACT During the over 40 years in which I have conducted personality research, I have had a number of insights about the research process that I thought would be worth sharing: an awareness of the human side of science; lessons from the person-situation debate; lessons from comparing research on highly ego-involving natural events, such as sport parachuting, with laboratory analogues; the realization of what is wrong with the concept of the Freudian unconscious and what should be done to replace it; and awareness of pervasive biases in the journal-reviewing process. Perhaps the one most general lesson I have learned is that the advancement of psychology as a cumulative, integrative science is hampered not so much by its conceptual complexity as by the difficulty of humankind to view itself objectively, with honesty, courage, and a willingness to surrender illusions. 相似文献
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This paper develops a semantical model – theoretic account of (logical) content complementing the syntactically specified account of content developed in A New Theory of Content I, JPL 23: 596–620, 1994. Proofs of Completeness are given for both propositional and quantificational languages (without identity). Means for handling a quantificational language with identity are also explored. Finally, this new notion of content is compared, in respect of both logical properties and philosophical applications, to alternative partitions of the standard consequence class relation proposed by Stelzner, Schurz and Wiengartner. 相似文献
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Ken’Ichi Miyazaki 《Attention, perception & psychophysics》1995,57(7):962-970
Two experiments were conducted to examine the effect of absolute-pitch possession on relativepitch processing. Listeners attempted to identify melodic intervals ranging from a semitone to an octave with different reference tones. Listeners with absolute pitch showed declined performance when the reference was out-of-tune C, out-of-tune E, or F#, relative to when the reference was C. In contrast, listeners who had no absolute pitch maintained relatively high performance in all reference conditions. These results suggest that absolute-pitch listeners are weak in relative-pitch processing and show a tendency to rely on absolute pitch in relative-pitch tasks. 相似文献