Task-effector asymmetries in a rhythmic continuation task

Variability in rhythmic movements has been interpreted as a signature of internal or peripheral noise processes. Grounded in an oscillator interpretation, this study hypothesized that period variability and drift arises from the asymmetry between target period and the limb's intrinsic dynamics. Participants synchronized to 7 target periods, swinging 1 of 3 pendulums in a continuation paradigm; 3 periods were longer, 3 shorter, and 1 identical to the preferred period. Results supported 5 predictions: Drift toward the preferred period was observed that scaled with the asymmetry. Variability was lowest for symmetry conditions and increased with the asymmetry. Variability decreased concomitant with the approach toward the preferred period. Periods exponentially approached the preferred period with positive autocorrelations up to 10 cycles.     

辩证分析兴奋性氨基酸对神经细胞的双重作用

兴奋性氨基酸（ＥＡＡｓ） 广泛分布于中枢神经系统,参与多种生理过程包括学习、记忆和伤害感受等。然而,ＥＡＡｓ 受体的过度兴奋却可引发一系列细胞事件,最终导致神经元的损伤与死亡。许多神经退行性疾病如早老性痴呆、癫痫和肌侧索硬化症等都与ＥＡＡｓ 的兴奋毒作用有关。目前的研究表明,由ＥＡＡｓ 受体过度兴奋所引发的细胞内钙超载是导致神经元死亡的最终途径     

学习不良儿童的家庭心理环境,父母教养方式及其与社会性发展的关系

从２３０８名１０—１５岁儿童中选取４２９名被试的研究结果表明．一般儿童的家庭心理环境、父母教养方式大大优于学习不良儿童,这些家庭资源与学习不良儿童的社会交往、自我概念和社会行为等有着密切的联系,说明家庭心理环境、父母教养方式对学习不良儿童社会性发展产生着重要作用。     

泰卜里厄哲玛提研究述评

泰卜里厄哲玛提是目前最大的跨国伊斯兰宣教运动,其以松散的组织化形式,以成员的流动性宣教而流布于很多地区。学术界主要从历史学、宗教学、政治学、社会学和人类学等学科的视角,关注了其起源、背景、领导人、思想、组织、成员、工作方式、使用文本、本土化、与政治的关系、社会影响、在不同国家和地区的活动等。研究者以西方学者为主,个别观点值得商榷。研究困难在于多学科知识、研究资料、语言三个方面。研究视野和范围仍有限,特别是缺乏深入的田野调查个案,对这一运动在不同地域中的本土化问题关照不够,同时应该重视研究的伦理和价值问题。     

《周易正义》的刑罚适用原则探源

在严格区别《周易》、王弼《周易注》及《周易正义》三者不同思想的基础上,厘清《周易正义》所蕴含的法律思想是《周易正义》法律视角研究的当务之急。作为《周易正义》法律思想的表征体系,《周易正义》中的刑罚适用原则可简述为:区分故意与过失原则、轻刑原则、重刑原则。这些原则的形成有其特定的哲学基础。     

An associative model of adaptive inference for learning word-referent mappings

People can learn word–referent pairs over a short series of individually ambiguous situations containing multiple words and referents (Yu & Smith, 2007, Cognition 106: 1558–1568). Cross-situational statistical learning relies on the repeated co-occurrence of words with their intended referents, but simple co-occurrence counts cannot explain the findings. Mutual exclusivity (ME: an assumption of one-to-one mappings) can reduce ambiguity by leveraging prior experience to restrict the number of word–referent pairings considered but can also block learning of non-one-to-one mappings. The present study first trained learners on one-to-one mappings with varying numbers of repetitions. In late training, a new set of word–referent pairs were introduced alongside pretrained pairs; each pretrained pair consistently appeared with a new pair. Results indicate that (1) learners quickly infer new pairs in late training on the basis of their knowledge of pretrained pairs, exhibiting ME; and (2) learners also adaptively relax the ME bias and learn two-to-two mappings involving both pretrained and new words and objects. We present an associative model that accounts for both results using competing familiarity and uncertainty biases.     

Emotion and decision-making: affect-driven belief systems in anxiety and depression

Emotion processing and decision-making are integral aspects of daily life. However, our understanding of the interaction between these constructs is limited. In this review, we summarize theoretical approaches that link emotion and decision-making, and focus on research with anxious or depressed individuals to show how emotions can interfere with decision-making. We integrate the emotional framework based on valence and arousal with a Bayesian approach to decision-making in terms of probability and value processing. We discuss how studies of individuals with emotional dysfunctions provide evidence that alterations of decision-making can be viewed in terms of altered probability and value computation. We argue that the probabilistic representation of belief states in the context of partially observable Markov decision processes provides a useful approach to examine alterations in probability and value representation in individuals with anxiety and depression, and outline the broader implications of this approach.     

Customer reactions to encountering consecutive service failures

According to previous studies, many consumers in Taiwan have experienced consecutive service failures. Despite these failures, many consumers still remain loyal to a service provider for a variety of reasons, such as money deposits, contractual agreements, associated costs, time constrains, and health concerns. We attempt to investigate the emotional reactions and expectations of consumers after they have experienced two consecutive service failures. Our findings reveal that for high‐involvement services, although customers display strong negative emotional reactions after each service failure, the reaction to the second service failure is less intensive than that to the first one. Furthermore, our findings show that as long as the products or services remain in use, customers tend to retain high levels of expectation in regard to the service provider. Copyright © 2012 John Wiley & Sons, Ltd.     

The Expansion of Epistemology: The Metaphysical vs. the Practical Approach

From the perspective of world philosophy, one phenomenon of the 20th century is quite intriguing. Certain philosophers in China as well as in the West, finding the traditional conception of epistemology too narrow-minded, argued that its scope should be expanded. The Chinese way of expanding epistemology might be called the metaphysical approach, and the Western way the practical approach. In this article, I will first give an outline of both approaches and then try to demonstrate that a substantial dialogue can be created between them. By focusing on the problem of the articulation of what we know, I will make the metaphysical approach and the practical approach engage each other and thus prove to be mutually complementary.     

Physical health, positive and negative affect, and personality: A longitudinal analysis

This study used structural equation modeling to examine longitudinal relations among physical health, personality and mood in a sample of 360 college students. Research focused on the longitudinal associations among physical health and mood and their systematic relations with the Big Five personality dimensions of Extraversion and Neuroticism. Longitudinal analyses over successive 1-month intervals revealed lagged reciprocal effects between physical health and negative affect. After controlling for the effect of negative affect, physical health influenced subsequent positive affect, but positive affect did not influence subsequent physical health. Implications of these findings for subsequent research on health, personality, and emotions are discussed.