The role of structural consistency between categories and attributes in hierarchical category learning

This study investigated how consistency between categories and attributes determines attribute selection in hierarchical category learning. Participants learned six categories for which number and color were equally relevant attributes, followed by a transfer task, to test which attribute was used. Before that, half of them learned embedding higher-level categories for which numbers were likely to be used. Orthogonal to this factor, the hierarchical structure was made explicit for half of them by category labels. The results showed that participants used numbers in the prior learning, but that the use of numbers was inhibited in the subsequent six-category learning task. However, this inhibitory effect was reduced when the hierarchical structure was explicit. The pattern of results suggests that attribute selection is determined by structural consistency between categories and attributes, not by a prior use of an attribute.     

西方积极心理学运动是一场心理学革命吗？

积极心理学是20世纪末兴起于美国的一股重要心理学力量,也是当今心理学舞台上比较活跃的一个领域,对于它的出现,有人认为这是一场心理学革命或心理学研究范式的转变。该文仔细分析了积极心理学与传统主流心理学、人本主义心理学的关系,并对心理学发展中的革命性和非革命性变化的特点做了概括,最终得出结论：积极心理学从目前来看不是心理学发展史上的一场革命,其本身并不存在研究范式上的根本转变     

藏族大学生自我意识与价值观初探

通过对411名藏族大学生的自我意识结构,价值观类型进行问卷调查 ,结果显示藏族大学生有较强的自尊心和独立意识,表现出较好的自我接纳,具有积极的价值观倾向;文、理科不同的教育内容、教育方法对藏族大学生自我意识和价值观的形成产生不同的影响;男女大学生自我意识的发展存在性别差异。     

孕产妇意向对新生儿疾病筛查可及性的影响评价

采用问卷调查的方法对244名孕产妇进行了意向调查,通过了解需方对新生儿疾病筛查的认知、满意度等,对其可及性的作用,寻找潜在的促进和阻碍新生儿疾病筛查开展的种种影响因素,为我国今后更好地开展疾病筛查提供借鉴.     

Planning over the day span: memory for the content of plans

The purpose of this study was to clarify the effect of the time of day on memory for the content of plans, and to examine the influence of knowledge of daily activities on it. Twenty‐four undergraduates participated as subjects in the experiment. Participants were told to memorize 24 plans of one day (e.g. ‘13:00’, ‘making a telephone call’), and were then asked to recall them in the test phase. Furthermore, we tried to explore their knowledge of everyday activities using a questionnaire. The result showed that plans of night, morning, and evening were recalled better than that of afternoon. This result was explained by the notion that knowledge of one's personal daily activities might affect memory of plans. Copyright © 2002 John Wiley & Sons, Ltd.     

感知价值、满意度与继续使用意向—基于3G用户的实证研究

本文考察感知价值、满意度对继续使用意向的作用机理。基于相关理论与实证研究,我们首先提出3G用户继续使用意向概念模型与研究假设,然后通过实证研究对假设进行检验。研究结果表明感知价值和满意度决定继续使用意向。满意度是继续使用意向最强的预测因子。感知有用性和感知使用成本既直接作用于继续使用意向,也通过满意度间接作用于继续使用意向。感知易用性和感知形象提升直接作用于继续使用意向,而不需要通过满意度的中介作用。     

拟社会互动在年幼儿童视频学习中的作用

本研究采用表征理解任务和规则学习任务,通过比较真人互动、视频拟互动和视频非互动三种条件下年幼儿童的学习效果,考察拟互动在2-5岁儿童视频学习中的作用。结果表明,2岁儿童的视频学习存在视频缺陷现象,2.5岁到5岁儿童的拟社会互动视频学习效果明显,优于非互动视频学习,与真人互动学习相当。2.5岁至4.5岁是拟互动视频学习的最佳年龄。     

不同强度短时有氧运动对执行功能的影响

探讨短时有氧运动对执行功能的影响是否与运动强度和性别有关, 为从运动强度和性别角度选择合理的有氧运动干预方案改善执行功能提供基础。研究采用混合设计, 选取30名大学生(男女人数各半), 使用功率自行车实施30分钟的不同强度有氧运动, 使用Flanker任务、2-back任务和数字More-odd shifting任务分别测查被试基线、小强度短时有氧运动、中强度短时有氧运动和大强度短时有氧运动后执行功能的抑制、刷新和转换三个子功能的变化, 结果表明：不同强度的短时有氧运动对执行功能产生选择性的积极影响, 且不随性别变化而改变。     

Gaze following among toddlers

Children's cooperative activities with their peers become markedly coordinated during the 3rd year of life. During these activities, the child needs to follow his/her peers’ gaze to objects, and look at the same objects to initiate coordinated action. Since 3-year-olds’ ability to follow their peers’ gaze has not been studied, we experimentally investigated this in our study. In the experimental trials, an experimenter induced a child (looker) to look at a doll on display, and observed the reaction of another child (follower) who was in front of the looker (and not looking at the doll). In the control trials, the experimenter displayed the doll in an identical manner when the follower was alone. The followers followed the gaze of the lookers, looking at the doll in approximately 90% of the experimental trials, compared with 20% of the control trials. These results indicate that 3-year-olds can follow their peers’ gaze.     

医学科研与医学科研伦理的辩证思考

医学科研中出现许多伦理问题。其必然性在于科学与伦理的不同：即属性不同、评价标准不同、变革速度不同。医学伦理可以告诉人们什么样的医学科研活动是善的,什么样的科研行为是应该做的。医学科研中要把握医学伦理观,体现医学科技观,富有医学创新观。