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排序方式: 共有170条查询结果,搜索用时 31 毫秒
1.
D Sagi 《Perception & psychophysics》1988,43(6):601-603
2.
Mercedes Barchilon Ben-Av Dov Sagi Jochen Braun 《Attention, perception & psychophysics》1992,52(3):277-294
Perceptual organization is thought to involve an analysis of bothtextural discontinuities andperceptual grouping. In earlier work, we found that textural discontinuities were detected normally even when visual attention was engaged elsewhere. Here we report how perceptual grouping is affected when visual attention is engaged by a concurrent visual task. To elicit perceptual grouping, we used the Gestalt demonstrations of grouping on the basis of proximity and of similarity. Four tasks were investigated, some requiring the observer to discriminate between horizontal and vertical grouping, and some requiring the observer to merely detect the presence or absence of grouping. Visual attention was engaged at the center of the display by a form identification task. The detection of a textural discontinuity served as a control task. Concurrent form identification conflicted with all four grouping tasks, resulting in a significant reduction of grouping performance in each case. No performance reduction was observed when either form identification or grouping discrimination was combined with the detection of a textural discontinuity. These results suggest that perceptual grouping and form identification compete for visual attention, whereas the detection of a textural discontinuity does not. 相似文献
3.
This study examines the effects of informational cues on the attribution of success in a masculine task. Israeli managers (subjects) first evaluated the performance of a fictitious male/female manager and then attributed a cause to his/her success in attaining the managerial position. As predicted, performance evaluation affected the attribution and manager sex did not. An unexpected association between leadership style and attribution was found. Implications of these findings for female managers and for further research are considered. 相似文献
4.
5.
Mothers of eight Israeli preterm infants were exposed to a standardized but individualized intervention during their stay in the hospital and before their infants were discharged. Mothers and infants in the intervention group were compared to eight control subjects using various outcome measures. While the intervention did not affect maternal personal attitudes and feelings, it positively affected the mother-infant interactions and mothers' perceptions of their infants. The importance of individualized interventions with parents of preterm infants is discussed. 相似文献
6.
Detection versus discrimination of visual orientation 总被引:4,自引:0,他引:4
The role of focused attention in vision is examined. Recent theories of attention hypothesize that serial search by focal attention is required for discrimination between different combinations of features. Experiments are reported which show that the mixture of a few (less than five) horizontal and vertical line segments embedded in an aggregate of diagonal line segments can be rapidly counted (also called 'subitizing') by a parallel (preattentive) process, while the discrimination between horizontal and vertical orientation requires serial search by shifting focal attention to each line segment. Thus detecting and counting targets that differ in orientation can be done in parallel by a preattentive process, whereas knowing 'what' the orientation of a target is (horizontal or vertical, ie of a single conspicuous feature) requires a serial search by focal attention. 相似文献
7.
Dov Eden 《International journal of psychology》1990,25(3-6):871-886
A self-fulfilling prophecy (SFP) occurs when the expectation of an event induces the behavior that increases the likelihood of the event's occurrence. Work organizations can be more or less effective as a result of SFP effects, whether naturally-occurring or deliberately induced by managers or consultants. Evidence for SFP at the individual level and at the collective level in work organizations is reviewed, including the Pygmalion, Galatea, Golem, and Messiah effects. Next, the SFP concept is extended beyond the single organization to the industrialization process at the national level. This leads to the novel hypothesis that, to the extent that persons in a developing nation expect industrialization to progress rapidly and successfully, the development process is facilitated. Several examples of SFP on Israel's path to industrialization are described, and emulation of these examples by other newly industrialized countries is proposed. 相似文献
8.
Quality of Work Life and its Relation to Quality of Life 总被引:5,自引:0,他引:5
9.
Texture-based tasks are little affected by second tasks requiring peripheral or central attentive fixation. 总被引:1,自引:0,他引:1
Experiments are described in which observers attempted to perform concurrently two separate visual tasks. Two types of tasks were used: the identification of a T-shaped or L-shaped letter target, and the detection or localization of a texture element of unique orientation (texture target) within a dense texture. Combining these tasks to form various task pairs, performance as a function of stimulus onset asynchrony (SOA) was established separately for each task in a pair. In addition, performance was measured when each task was carried out by itself. When paired, two identification tasks (T or L) on (two) letter targets required a significantly larger SOA than either identification task by itself. This outcome suggests the involvement of serial performance and competition for a limited resource, confirming that letter identification requires attentive fixation. However, when the identification of a central letter target was paired with the localization (upper or lower hemifield) of an eccentric texture target, performance in the pair was comparable to performance of each task by itself. This suggests parallel performance and a lack of conflict over resources. The outcome was similar when the identification of an eccentric letter target was paired with the detection (present or absent) of an eccentric texture target. These results are consistent with the possibility that localization and detection of a textural singularity do not require attentive fixation. 相似文献
10.
Studia Logica - In this paper we provide a detailed proof-theoretical analysis of a natural deduction system for classical propositional logic that (i) represents classical proofs in a more natural... 相似文献