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排序方式: 共有607条查询结果,搜索用时 31 毫秒
31.
Wible CG Han SD Spencer MH Kubicki M Niznikiewicz MH Jolesz FA McCarley RW Nestor P 《Brain and language》2006,97(3):294-305
Semantic priming refers to a reduction in the reaction time to identify or make a judgment about a stimulus that has been immediately preceded by a semantically related word or picture and is thought to result from a partial overlap in the semantic associates of the two words. A semantic priming lexical decision task using spoken words was presented in event-related fMRI and behavioral paradigms. Word pairs varied in terms of semantic relatedness and the connectivity between associates. Thirteen right-handed subjects underwent fMRI imaging and 10 additional subjects were tested in a behavioral version of the semantic priming task. It was hypothesized priming would be greatest, reaction time fastest, and cortical activation reduced the most for related word pairs of high connectivity, followed by related word pairs of low connectivity, and then by unrelated word pairs. Behavioral and fMRI results confirmed these predictions. fMRI activity located primarily in bilateral posterior superior and middle temporal regions showed modulation by connectivity and relatedness. The results suggest that these regions are involved in semantic processing. 相似文献
32.
Negotiators may use vigilant, loss-minimizing strategies or eager, gain-maximizing strategies. The present study provides evidence that preferences for these different strategies depend on negotiator role and personal orientation. In a price negotiation, buyers and prevention-focused individuals prefer vigilant strategies, whereas sellers and promotion-focused individuals prefer eager strategies. When there is a match between the strategy and the role (role–strategy fit) or between the strategy and the individual's regulatory focus orientation (focus–strategy fit), the negotiator experiences more fit and plans to be more demanding in the negotiation. By manipulating strategy in a real, binding negotiation, we reveal its importance in determining negotiators' subjective experiences and planned demand. Our results show that shared strategic preferences between different motivational orientations—negotiator role and personal regulatory focus—can create self-regulatory compatibility. 相似文献
33.
Tiffany Galtress 《Learning and motivation》2010,41(2):108-124
Changes in reward magnitude or value have been reported to produce effects on timing behavior, which have been attributed to changes in the speed of an internal pacemaker in some instances and to attentional factors in other cases. The present experiments therefore aimed to clarify the effects of reward magnitude on timing processes. In Experiment 1, rats were trained to discriminate a short (2 s) vs. a long (8 s) signal followed by testing with intermediate durations. Then, the reward on short or long trials was increased from 1 to 4 pellets in separate groups. Experiment 2 measured the effect of different reward magnitudes associated with the short vs. long signals throughout training. Finally, Experiment 3 controlled for satiety effects during the reward magnitude manipulation phase. A general flattening of the psychophysical function was evident in all three experiments, suggesting that unequal reward magnitudes may disrupt attention to duration. 相似文献
34.
Does participation in mass religious rituals promote intergroup conflict or does it promote intergroup tolerance? We assess these claims by examining the effects of the annual pilgrimage to Mecca (the hajj) on sociopolitical views of Muslims in Russia’s North Caucasus. Participant observation during the hajj and a quasi-experimental focus group study of pilgrims and non-pilgrims produced paradoxical findings. While the hajj strengthened their ingroup pride as Muslims, the pilgrims came through as more outgroup-tolerant and prosocial than the non-pilgrims. We develop a synthetic theoretical solution: in high-identity-value, high-diversity common group settings social recategorisation and social capital become transitive – that is, inclusive views and social capital effects within an ingroup extend to outgroups. This means that intergroup conflict could be reduced by not only maximising contact across conflicting groups, but also by bringing together as many subgroups as possible within each conflicting group in settings where their common identity is positively affirmed in a non-discriminatory fashion. 相似文献
35.
Research has increasingly focussed on the benefits of meditation in everyday life and performance. Mindfulness in particular improves attention, working memory capacity, and reading comprehension. Given its emphasis on moment-to-moment awareness, we hypothesised that mindfulness meditation would alter time perception. Using a within-subjects design, participants carried out a temporal bisection task, where several probe durations are compared to “short” and “long” standards. Following this, participants either listened to an audiobook or a meditation that focussed on the movement of breath in the body. Finally, participants completed the temporal bisection task for a second time. The control group showed no change after the listening task. However, meditation led to a relative overestimation of durations. Within an internal clock framework, a change in attentional resources can produce longer perceived durations. This meditative effect has wider implications for the use of mindfulness as an everyday practice and a basis for clinical treatment. 相似文献
36.
The political, social, and cultural history of a nation modulates the representations of rights and duties. The aim of this research is to compare students from two countries (Italy and Burundi) in terms of how they define their rights and duties. In the two countries, there are differences both in the legal protection of fundamental rights and in regard to material conditions, which in turn ensure the effectiveness of rights. Focus groups structured around nine questions were conducted in Burundi and in Italy. The discussions with Italian and Burundian students showed some clear differences. Although both groups speak of rights as something to be safeguarded and something that everyone is born with, Italian students do not recognize the complementarity of rights and duties and consider the latter simply as a limit and an obstacle to individual enhancement. On the contrary, Burundian adolescents seem more aware of their personal responsibilities and their role in protecting human rights. 相似文献
37.
《Journal of motor behavior》2013,45(4):450-459
In previous studies of attentional focus effects, investigators have measured performance outcome. Here, however, the authors used electromyography (EMG) to determine whether differences between external and internal foci would also be manifested at the neuromuscular level. In 2 experiments, participants (N = 11, Experiment 1; N = 12, Experiment 2) performed biceps curls while focusing on the movements of the curl bar (external focus) or on their arms (internal focus). In Experiment 1, movements were performed faster under external than under internal focus conditions. Also, integrated EMG (iEMG) activity was reduced when performers adopted an external focus. In Experiment 2, movement time was controlled through the use of a metronome, and iEMG activity was again reduced under external focus conditions. Those findings are in line with the constrained action hypothesis (G. Wulf, N. McNevin, & C. H. Shea, 2001), according to which an external focus promotes the use of more automatic control processes. 相似文献
38.
Gabriele Wulf Nathan Mcconnel Matthias Gärtner Andreas Schwarz 《Journal of motor behavior》2013,45(2):171-182
The authors examined how the effectiveness of feedback for the learning of complex motor skills is affected by the focus of attention it induces. The feedback referred specifically either to body movements (internal focus) or to movement effects (external focus). In Experiment 1, groups of novices and advanced volleyball players (N = 48) practiced “tennis” serves under internal-focus or external-focus feedback conditions in a 2 (expertise) × 2 (feedback type) design. Type of feedback did not differentially affect movement quality, but external-focus feedback resulted in greater accuracy of the serves than internal-focus feedback during both practice and retention, independent of the level of expertise. In Experiment 2, the effects of relative feedback frequency as a function of attentional focus were examined. A 2 (feedback frequency: 100% vs. 33%) × 2 (feedback type) design was used. Experienced soccer players (N = 52) were required to shoot lofted passes at a target. External-focus feedback resulted in greater accuracy than internal-focus feedback did. In addition, reduced feedback frequency was beneficial under internal-focus feedback conditions, whereas 100% and 33% feedback were equally effective under external-focus conditions. The results demonstrate the effectiveness of effect-related, as opposed to movement-related, feedback and also suggest that there is a need to revise current views regarding the role of feedback for motor learning. 相似文献
39.
The purpose of the current experiment was to distinguish between the impact of strategic and affective forms of gain- and loss-related motivational states on the attention to negative stimuli. On the basis of the counter-regulation principle and regulatory focus theory, we predicted that individuals would attend more to negative than to neutral stimuli in a prevention focus and when experiencing challenge, but not in a promotion focus and under threat. In one experiment (N = 88) promotion, prevention, threat, or challenge states were activated through a memory task, and a subsequent dot probe task was administered. As predicted, those in the prevention focus and challenge conditions had an attentional bias towards negative words, but those in promotion and threat conditions did not. These findings provide support for the idea that strategic mindsets (e.g., regulatory focus) and hot emotional states (e.g., threat vs. challenge) differently affect the processing of affective stimuli. 相似文献
40.
《Women & Therapy》2013,36(3):59-68
No abstract available for this article. 相似文献