相似性信息的激活对情境性表征影响的年龄差异

使用视觉搜索范式研究了6岁、9岁、12岁和成人,在限时和不限时呈现材料条件下对实物图形的视觉搜索及再认。结果表明:1)限时和不限时视觉搜索任务方式对视觉搜索和再认的准确性、反应时均有显著影响。2)视觉搜索和再认的准确性随被试年龄的增长而提高,反应时则随其年龄增长而缩短。3)靶项目是否作为搜索项目出现对视觉搜索和再认的准确性没有显著影响,但对视觉搜索和再认的反应时有显著影响,靶项目的出现使视觉搜索和再认的反应时都显著缩短。4)搜索项性质对视觉搜索和再认的反应时指标有显著影响,但对准确性没有显著影响。     

道教劝善书中的伦理思想及其教育方法

劝善书,又称善书,是产生于北宋末南宋初、盛行于明清时期的一些专门宣传伦理道德、劝人弃恶从善的小册子,其中心思想是“诸恶莫作,众善奉行”。善书的书写形式通俗易懂,有劝善文、劝善歌、劝善图说、功过格、宝卷等。这类书籍儒释道三家都有,而道教劝善书因出现的时间较早、影响较大而起了带头的作用,如被誉为“善书三圣经”的善书即是道教的《太上感应篇》、《文昌帝君阴骘文》和《关圣帝君觉世真经》,其中《太上感应篇》还被誉为“善书之祖”。在本文中,笔者主要从教育的视角以一些道教重要善书为例简要探讨其伦理思想。一、道教劝善书伦…     

危机应对策略对消费者矛盾态度和购买意愿的影响

采用2×2两因素被试间实验设计探讨初始矛盾态度及危机应对策略对消费者矛盾态度和购买意愿的影响。结果表明:当消费者初始矛盾态度水平较低时更可能受辩解策略的影响,从而使其负面态度和矛盾态度下降; 当消费者初始矛盾态度水平较高时更可能受和解策略的影响,从而使其负面态度和矛盾态度下降; 正面态度/负面态度可以显著正向/负向预测消费者的购买意愿,矛盾态度在其中起调节作用,即矛盾态度水平越高,正面/负面态度与购买意愿之间关系的不确定性越高。     

发展性阅读障碍的噪音抑制缺陷

发展性阅读障碍的缺陷本质一直是研究者们关注和争论的焦点。近些年, 有研究者提出了一种新的理论假设——噪音抑制缺陷假设, 并得到了许多研究证据的支持。这种缺陷在视觉和听觉通道中均存在, 说明阅读障碍具有多感觉/一般性噪音抑制缺陷。但也有研究者指出知觉噪音抑制本质上反映了注意的功能, 因而这种缺陷可能是由注意缺陷导致的。目前还缺乏直接证据支持汉语阅读障碍存在噪音抑制缺陷。最后本文对该领域未来的发展方向做出展望。     

加入WTO对我国医药卫生科学研究的影响及对策

中国加入WTO,不仅对我国经济和社会的发展带来机遇和挑战,而且对我们的医药卫生科学研究的发展,产生巨大的影响。这就需要我们采取积极的措施,变压力为动力,加速我国医药卫生科学研究和学科建设的发展。     

移动支付对大学生冲动性消费行为的影响——来自ERP的实验证据

为寻找移动支付影响冲动性消费的电生理证据,实验采用两难选择的虚拟购物任务,通过2(支付方式)×2(产品类型)被试内实验设计,结合ERP技术比较移动支付和现金支付下的冲动消费及相关电生理指标。实验数据显示:(1)移动支付下参与者的购买意愿高于现金条件;(2)对享乐品的购买,移动支付下的购买意愿、购买率高于现金支付,而对实用品两种支付下无差异;(3)决策阶段头皮左侧发现,移动支付下享乐品的LPP波幅正于实用品,而现金支付下二者LPP波幅无差异;(4)N2波幅上存在Buy/No Buy效应。结果表明:移动支付促进了享乐品的冲动性消费,决策阶段左侧脑区的LPP波幅可作为其电生理指标,N2波幅表征买与不买。     

Within‐person Relationship between Creative Self‐efficacy and Individual Creativity: The Mediator of Creative Process Engagement and the Moderator of Regulatory Focus

Integrating the dynamic self‐regulatory framework with the motivational self‐regulation perspective, we theorize and test how and when creative self‐efficacy increases individual creativity at the within‐person level. Conceptualizing creative process engagement as a self‐regulation effort, we theorize that creative process engagement mediates the within‐person effect of creative self‐efficacy on individual creativity. We further explore how creative self‐efficacy and chronic regulatory focus interact to affect the within‐person mediating effect. A sample of 145 R&D workers provided two monthly reports for their creative activities and experiences over 8 months. The findings provide empirical support for the hypothesized mediating mechanism. At the within‐person level, creative process engagement mediates the relationship between creative self‐efficacy and individual creativity. The results also show that chronic regulatory focus moderated the mediated relationship. Specifically, creative self‐efficacy is positively related to individual creativity for employees with a strong prevention focus and negatively related to individual creativity for employees with a strong promotion focus.     

Altered behavioral and neural responsiveness to counterfactual gains in the elderly

Counterfactual information processing refers to the consideration of events that did not occur in comparison to those actually experienced, in order to determine optimal actions, and can be formulated as computational learning signals, referred to as fictive prediction errors. Decision making and the neural circuitry for counterfactual processing are altered in healthy elderly adults. This experiment investigated age differences in neural systems for decision making with knowledge of counterfactual outcomes. Two groups of healthy adult participants, young (N = 30; ages 19–30 years) and elderly (N = 19; ages 65–80 years), were scanned with fMRI during 240 trials of a strategic sequential investment task in which a particular strategy of differentially weighting counterfactual gains and losses during valuation is associated with more optimal performance. Elderly participants earned significantly less than young adults, differently weighted counterfactual consequences and exploited task knowledge, and exhibited altered activity in a fronto-striatal circuit while making choices, compared to young adults. The degree to which task knowledge was exploited was positively correlated with modulation of neural activity by expected value in the vmPFC for young adults, but not in the elderly. These findings demonstrate that elderly participants’ poor task performance may be related to different counterfactual processing.     

细胞死亡概念的发展及启示

随着生物医学技术的发展,人们对细胞死亡的研究不断深入,从组织学水平到细胞学水平再深入到分子生物学水平,有关细胞死亡的概念也经历了坏死,凋亡与坏死,胀亡、凋亡与坏死等几个阶段.认识具有反复性和无限性,人们对细胞死亡的认识体现了认识的辨证发展过程,细胞死亡理论的发展会像死亡自身一样不可避免.     

知觉信息先期呈现下两可图的命名和相似判断

在实物图片或轮廓图先期呈现的条件下研究了6岁、9岁、12岁及成人被试对两可图形的命名或相似判断。结果表明：（1）命名项目或相似判断与线索项目有关时,各年龄被试对判断项的命名或相似判断均表现出与线索项目一致的倾向。（2）轮廓图作为线索项目时．命名或相似判断反应时较长;实物作为线索项目时,命名或相似判断反应时较短。无关项目作为为线索项目时．被试命名或相似判断的反应时居中;命名项目或相似判断项目均与线索项目一致时反应时较短;命名项目或相似判断项目均与线索项目不一致时反应时延长。（3）被试命名或相似判断的反应时随其年龄的增长而下降,6岁和9岁儿童的反应时较长;12岁儿童的反应时较短;成人的反应时最短。