Effects of two teacher-presentation rates on off-task behavior, answering correctly, and participation

Off-task behavior, correct answering, and participation during beginning reading instruction were recorded for two low-achieving first-grade children during two different rates of teacher presentation. A slow-rate presentation (A) was compared with a fast-rate presentation (B) in an ABABAB design. In slow-rate presentation, there was a delay between the children's response and introduction of the next task. In fast-rate presentation, there was no delay. A new teacher taught during the final AB phases, which allowed for a brief replication. Both teachers were reminded on a fixed-interval 90-sec schedule throughout all phases of the experiment to praise the subjects, thus preventing a confounding of social praise and rate of teacher presentation. Fast-rate presentation was accompanied by a lower per cent occurrence of off-task behavior for both Subjects 1 and 2. For Subject 1, correct answering and participation were more frequent during all three fast-rate phases. For Subject 2, correct answering and participation were more frequent during the fast-rate phases after the first reversal.     

语言产生中词频效应老化的神经基础与时间进程

词频效应指语言产生中人们对高频词汇的加工比低频词汇更快更准确的一种现象,它可能发生在语言产生中的不同阶段。对青年人和老年人词频效应的不同特点和加工机制进行比较,可以考察语言产生的认知老化机制。通过语言产生理论可对词频效应的老化进行预测,提出词频效应在个体发展和老化阶段的相对稳定性,分析老化导致词频效应相关的神经基础和加工时间进程的改变。未来研究可进一步分离词频效应与习得年龄效应对语言产生老化的影响,并扩展至神经退行性疾病患者中。     

支持型领导行为在工作压力模型中的作用机制研究

本研究调查了 1 3个企业共 2 1 8位员工 ,探讨了支持型领导行为在角色冲突、人际冲突、缺乏成就与发展 (压力源 )和工作满意感、工作焦虑 (压力反应 )之间的作用机制。研究发现 :(1 )支持型领导行为对工作满意感和工作焦虑有主效应 ,但是由于逆向缓冲的存在 ,支持型领导行为的主效应并不总是对的 ,我们必须在更大的范围中考虑领导行为的效应 ;(2 )缓冲效应的六个假设只有一个被证明 ,但是方向相反 ,即支持型领导行为加剧了由人际冲突造成的工作不满意感 ;(3)两个中介模型的部分关系被证明 ,但是我们很难确定是支持型领导行为的弱化效应还是评价作用。为了更好地说明因果关系 ,在将来的研究中纵向研究设计被认为更为恰当。     

EVERYONE AT THE TABLE: Religious Activism and Health Care Reform in Massachusetts

Using interviews with activists and Lisa Sowle Cahill's concept of participatory discourse, this article examines how the Greater Boston Interfaith Organization (GBIO) built solidarity for the 2006 Massachusetts health care reform law. The analysis explores the morally formative connections between GBIO's activist strategies and its public liturgy for reform. The solidarity generated through this interfaith coalition's activities and religious arguments contrasts with two standard types of policy discourse, economics and liberalism. Arguments for health care reform based on economic efficiency or positive rights are hampered by the lack of solidarity in U.S. political culture. GBIO's congregation‐based organizing offers a performative model of public argumentation for religious groups committed to achieving affordable, quality health care for all Americans.     

组织公平文献综述及未来的研究方向

文章的主要目的在于回顾组织公平自其产生至今的主要文献,并介绍Colquitt(2001)的组织公平四因素结构(即分配公平、程序公平、人际公平和信息公平)[1]。文章还讨论了组织公平的工具性和非工具性模型。最后,文章介绍了组织公平今后的几个研究方向。     

童年中期同伴关系、同伴关系知觉与心理行为适应的关系

本研究以422名小学二、三、四年级的儿童进行为期3年的纵向研究,考察了时间2的同伴关系知觉在时间1的同伴关系和时间3的心理行为适应之间的中介效应。结果表明,自我知觉的社会能力在同伴接纳与社交/领导行为和孤独感之间的中介作用显著,自我知觉的友谊质量在双向互选朋友与社交/领导行为和孤独感之间的中介作用显著。     

语音回路与阅读理解关系的眼动研究

语音回路是工作记忆中的一个重要成分。由于工作记忆在言语理解中有重要作用,所以负责加工语音信息的语音回路可能也和阅读理解有密切关系。但是,迄今为止直接研究语音回路影响阅读理解的研究不是很多,而且得出的结论也不太一致。研究使用眼动分析方法探讨语音回路与汉语阅读理解的关系。研究采用抑制发音和错误干扰相结合的范式考查正常条件下和抑制发音条件下的阅读特点的差别性。结果表明：（1）在一般阅读难度情况下,语音回路会延缓阅读速度;（2）两种阅读条件下都出现了同音效应,即同音字的首次注视时间、总注视时间都比非同音字短;（3）语音在汉语阅读的早期就发挥了作用,而且同音字错误比非同音字错误更容易被恢复     

Determinants of instrumental extinction in terrestrial toads (Bufo arenarum)

Previous research in a water-reinforced instrumental training situation with toads (Bufo arenarum) has shown that performance in both acquisition and extinction is poorer after partial, rather than continuous reinforcement training. In Experiment 1, the performance of a group receiving 24 trials on a 50% partial reinforcement schedule was poorer in acquisition and extinction than that of continuously reinforced groups matched for trials or reinforcements. However, partially reinforced toads extinguished at the same rapid rate as a continuously reinforced group that received training only on the days in which the partial toads received water reinforcement. In Experiment 2, extinction was faster after 10 reinforced acquisition trials than after 30 trials. This evidence suggests that the deleterious effects of partial reinforcement in toads can be explained by a combination of two factors, namely, the distribution of reinforced trials across days and the total number of reinforcements.     

The Universal Group of a Heyting Effect Algebra

A Heyting effect algebra (HEA) is a lattice-ordered effect algebra that is at the same time a Heyting algebra and for which the Heyting center coincides with the effect-algebra center. Every HEA is both an MV-algebra and a Stone-Heyting algebra and is realized as the unit interval in its own universal group. We show that a necessary and sufficient condition that an effect algebra is an HEA is that its universal group has the central comparability and central Rickart properties. Presented by Daniele Mundici     

Tactile orientation constancy: Do proprioception and attention affect the tactile vertical?1

Abstract: Tactile vertical, defined as the edge orientation that participants perceive to be vertical, was examined in four experiments. In Experiment 1, we touched the participants’ cheek, lips, or hand with an edge and asked them to judge its orientation with regard to gravitational vertical, both when the stimulated body part was upright (or, in the case of the lips, aligned), and when it was tilted (lips, distorted). We found that when the head or hand was tilted forward 30°, or when the lower lip was distorted approximately 38° to the left or right, the tactile vertical shifted in the same direction by only a fraction (8.7, 8.6, and 36.3% for the cheek, lips, and hand, respectively) of the change in orientation of the stimulated region. The results indicated considerable, but usually incomplete, orientation constancy. In Experiment 2, we measured tactile vertical on the hand for forward tilts from 0° to 45°. We found that as the hand was tilted, the tactile vertical increasingly shifted in the same direction as the hand (i.e., a tactile Aubert effect). In Experiment 3, the effect of attentional focus on tactile vertical was examined by comparing the tactile vertical of participants who attended to body‐centered coordinates, and others who attended to gravitation‐centered coordinates. We found that focusing on body‐centered coordinates caused a decrease in orientation constancy. We sought to examine the role of attention further in Experiment 4, measuring tactile vertical on the cheek of persons with temporomandibular disorders. Compared with normal participants, these participants displayed significantly lower constancy. The results were accounted for by a narrowing of attention to painful signals, so that proprioceptive information was attended to less. In conclusion, the degree of tactile orientation constancy that participants demonstrate varies as a function of body site and attentional focus.