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881.
882.
皮层-基底节-丘脑网络与脑岛网络属于感觉运动相关网络, 这两个网络的改变可能是导致精神分裂症的重要原因。目前主流研究与临床干预聚焦于患者的高级脑区异常, 对感觉运动系统的关注不足。对健康个体的研究发现舞蹈训练对感觉运动相关脑网络具有显著提升作用, 并自下而上地促进高级功能。以上研究提示舞蹈训练可能是干预精神分裂症、改善患者认知功能的新途径。本研究拟借助多模态磁共振成像技术, 以精神分裂症感觉运动相关网络为着力点, 通过分析精神分裂症患者在舞蹈训练前后的脑影像、临床症状及认知行为的改变, 揭示舞蹈训练临床干预的神经机制。 相似文献
883.
Prior studies examining imitation of exemplar solutions have produced a mixed pattern of findings with some studies indicating that exemplar imitation contributes to creative problem‐solving and other studies indicating that it may inhibit creative problem‐solving. In the present effort, it is argued that the effects of exemplar imitation on creative problem‐solving depend on the strategies people use when working with exemplars. In the present study, people were asked to provide advertising campaigns in response to a marketing problem. Prior to starting work on this problem, manipulations were made in exemplar content. Imitation strategies used in problem‐solving, for example, forward incrementation, and redefinition, were assessed. It was found that imitation strategies were strongly related to the production of higher quality, more original, and more elegant advertising campaigns. Moreover, use of these strategies was facilitated when more specific information was presented in exemplar solutions. The implications of these findings for understanding the role of imitation in creative problem‐solving are discussed. 相似文献
884.
Dona‐Gene Mitchell 《Political psychology》2014,35(5):679-701
Scholars and political consultants alike know that during a campaign even the hint of a scandal has the potential to distract from a candidate's policy messages—or even worse—can have dire consequences on Election Day. But does it matter whether the scandal breaks early as opposed to late in the campaign? And how do citizens respond when the scandal drags on for weeks? This study represents the first effort to shed light on these temporal dynamics. Results reveal that timing affects the immediate impact of scandal information, the rate at which those initial effects decay, and candidate evaluations offered at the campaign's conclusion. Additionally, I develop two competing hypotheses regarding how citizens may process scandal information when it is repeated throughout a campaign. Empirical tests suggest that voters eventually reach a saturation threshold after which additional repetition of scandal information has negligible effects on evaluations unless new details are a prominent feature of ongoing coverage, in which case repetition can extend the negative effects of scandal. 相似文献
885.
Sean Devine 《Zygon》2014,49(1):42-65
William Dembski claims to have established a decision process to determine when highly unlikely events observed in the natural world are due to Intelligent Design. This article argues that, as no implementable randomness test is superior to a universal Martin‐Löf test, this test should be used to replace Dembski's decision process. Furthermore, Dembski's decision process is flawed, as natural explanations are eliminated before chance. Dembski also introduces a fourth law of thermodynamics, his “law of conservation of information,” to argue that information cannot increase by natural processes. However, this article, using algorithmic information theory, shows that this law is no more than the second law of thermodynamics. The article concludes that any discussions on the possibilities of design interventions in nature should be articulated in terms of the algorithmic information theory approach to randomness and its robust decision process. 相似文献
886.
编制选项具有诊断信息的多选题是提高多选题认知诊断测验诊断效果的有效方法.研究从认知诊断的目标出发,根据认知诊断测验质量的评价标准,结合多选题的特点,探讨选项具有诊断信息的多选题认知诊断测验编制的原则.同时,结合多选题的特点和多选题采用称名计分方式的需要,对编制选项具有诊断信息的多选题提出两点要求.根据多选题认知诊断测验编制的原则和要求,给出具有可操作性的多选题认知诊断测验编制的步骤.模拟研究结果表明:根据所提出的原则和要求编制的多选题认知诊断测验具有较好的诊断效果,说明这些原则和要求合理、可行.由于这些原则、要求和步骤具有较强的可操作性,因此它对于编制多选题认知诊断测验具有一定的指导意义. 相似文献
887.
Núria Esteve-Gibert Hlne Lvenbruck Marion Dohen Mariapaola D'Imperio 《Developmental science》2022,25(1):e13154
Previous evidence suggests that children's mastery of prosodic modulations to signal the informational status of discourse referents emerges quite late in development. In the present study, we investigate the children's use of head gestures as it compares to prosodic cues to signal a referent as being contrastive relative to a set of possible alternatives. A group of French-speaking pre-schoolers were audio-visually recorded while playing in a semi-spontaneous but controlled production task, to elicit target words in the context of broad focus, contrastive focus, or corrective focus utterances. We analysed the acoustic features of the target words (syllable duration and word-level pitch range), as well as the head gesture features accompanying these target words (head gesture type, alignment patterns with speech). We found that children's production of head gestures, but not their use of either syllable duration or word-level pitch range, was affected by focus condition. Children mostly aligned head gestures with relevant speech units, especially when the target word was in phrase-final position. Moreover, the presence of a head gesture was linked to greater syllable duration patterns in all focus conditions. Our results show that (a) 4- and 5-year-old French-speaking children use head gestures rather than prosodic cues to mark the informational status of discourse referents, (b) the use of head gestures may gradually entrain the production of adult-like prosodic features, and that (c) head gestures with no referential relation with speech may serve a linguistic structuring function in communication, at least during language development. 相似文献
888.
8—12岁超常与常态儿童的检测时比较 总被引:2,自引:0,他引:2
研究者采用两种视觉检测时任务,比较了8至12岁超常和常态儿童的检测时发展变化特点。结果发现:随着年龄的增长,超常组和常态组儿童的检测时都呈现出逐步减小的趋势,并且对于不同任务的检测时,两组儿童的发展速度不同,但均未表现出性别差异;在不同的年龄段和检测时任务中,超常组儿童的检测时均显著地快于常态组儿童。通过对两组儿童的检测时发展速率的比较还发现,儿童的检测时发展基本上不受学校知识或经验的影响。另外,两组儿童的检测时和智力测验分数之间都有中等程度的负相关。 相似文献
889.
890.
比较广告是一种新异但颇具争议的广告形式。研究者们对比较广告的概念和传播效果已有较为统一的认识,新近研究的重点是比较广告传播的作用机制及影响其传播效果的因素。文章从比较广告的传播效果、传播机制和影响因素三方面进行了系统的考察,提出现有研究在机制探讨和影响因素控制上的一些不足,并展望了研究亚文化下比较广告的方向 相似文献