Evolving team cognition: The impact of team situation models on team effectiveness

The current research examined a moderated mediation model for the relationships among indicators of objective career success (salary and job level), subjective career success (career satisfaction), and turnover intention, as well as the boundary conditions of this process. Based on a survey study among a sample of Chinese managers (N = 324), we found that both salary and job level were negatively related to turnover intention, with these relations fully mediated by career satisfaction. The results further showed that the relation between job level and career satisfaction was weaker among managers who perceived a higher level of organizational career management, but stronger among managers with a higher managerial career anchor. In support of our hypothesized model, the indirect effect of job level on turnover intention through career satisfaction existed only among managers who perceived a lower level of organizational career management or managers with a higher managerial career anchor. These findings carry implications for research on career success and turnover intention.     

A New Procedure to Test Mediation With Missing Data Through Nonparametric Bootstrapping and Multiple Imputation

This article proposes a new procedure to test mediation with the presence of missing data by combining nonparametric bootstrapping with multiple imputation (MI). This procedure performs MI first and then bootstrapping for each imputed data set. The proposed procedure is more computationally efficient than the procedure that performs bootstrapping first and then MI for each bootstrap sample. The validity of the procedure is evaluated using a simulation study under different sample size, missing data mechanism, missing data proportion, and shape of distribution conditions. The result suggests that the proposed procedure performs comparably to the procedure that combines bootstrapping with full information maximum likelihood under most conditions. However, caution needs to be taken when using this procedure to handle missing not-at-random or nonnormal data.     

语义分解性在惯用语理解中的作用

惯用语是比喻性语言的一种。语义分解性的作用是惯用语理解机制争论的焦点。通过语义启动任务, 探究了汉语动宾结构的惯用语和偏正结构的惯用语的意义理解模式, 揭示语义分解性在短的SOA (300 ms)和长的SOA (800 ms)下的作用。结果发现, 语义分解性独立地影响惯用语的意义激活：当SOA短时, 语义高分解的两类惯用语均表现出显著的字面义激活效应; 当SOA长时, 语义低分解的偏正结构的惯用语的意义激活的正确率优势明显。同时, 两类惯用语的语义分解性不同导致了语义激活启动效应的差异：当SOA短时, 语义低分解的动宾结构的惯用语存在两种意义的激活效应, 语义高分解的动宾结构的惯用语和偏正结构的惯用语存在字面义的激活效应; 当SOA长时, 语义低分解的动宾结构的惯用语存在两种意义的激活效应, 语义高分解的偏正结构的惯用语存在比喻义的激活效应。研究证实语义分解性在惯用语加工早期即发挥作用, 在加工晚期, 语义高分解的动宾结构的惯用语的多种意义同时激活削弱了两种意义的启动优势。整个研究结果支持惯用语理解的混合表征模型和层级显性意义假说。     

Spoken word recognition in context: evidence from Chinese ERP analyses

Two event-related potential (ERP) experiments were conducted to investigate spoken word recognition in Chinese and the effect of contextual constraints on this process. In Experiment 1, three kinds of incongruous words were formed by altering the first, second or both syllables of the congruous disyllabic terminal words in high constraint spoken sentences. Results showed an increase of N400 amplitude in all three incongruous word conditions and a delayed N400 effect in the cohort incongruous condition as compared with the rhyme incongruous and plain incongruous condition. In addition, unlike results in English, we found that the N400 effect in the rhyme incongruous condition disappeared earlier than in the plain incongruous condition. In Experiment 2, three kinds of nonwords derived from sentence congruous words were constructed by altering few or many phonetic features of the onset or the whole of the first syllable, and the resulting nonwords appeared as disyllabic terminal forms in either high or low constraint sentences. All three nonword conditions elicited the N400 component. In addition, in high constraint sentences but not in low, the amplitude and duration of the N400 varied as a function of the degree of phonetic mismatch between the terminal nonword and the expected congruous word.     

义势两辨荣辱相分——荀子荣辱观及其当代启示

荀子是中国古代第一个系统论述荣辱观的思想家,他在<正论>篇里提出了著名的"义荣"、"势荣"、"义辱"、"势辱"概念.先秦儒家三大代表人物孔子、孟子、荀子在荣辱观问题上的观点是一致的.荣辱观主要通过荣誉感的激励功能与羞耻感的约束功能发挥其道德评价与选择功能.荀子以先义后利为荣,追求内在的义荣的思想为我们当前树立正确的荣辱观提供了有益的启示.     

Alzheimer amyloid beta-peptide inhibits the late phase of long-term potentiation through calcineurin-dependent mechanisms in the hippocampal dentate gyrus

The perforant path projecting from the entorhinal cortex to the hippocampal dentate gyrus is a particularly vulnerable target to the early deposition of amyloid beta (Abeta) peptides in Alzheimer's brain. The authors previously showed that brief applications of Abeta at subneurotoxic concentrations suppressed the early-phase long-term potentiation (E-LTP) in rat dentate gyrus. The current study further examines the effect of Abeta on the late-phase LTP (L-LTP) in this area. Using multiple high-frequency stimulus trains, a stable L-LTP lasting for at least 3 h was induced in the medial perforant path of rat hippocampal slices. Bath application of Abeta(1-42) (0.2-1.0 microM) during the induction trains attenuated both the initial and late stages of L-LTP. On the other hand, Abeta(1-42) perfusion within the first hour following the induction primarily impaired the late stage of L-LTP, which resembled the action of the protein synthesis inhibitor emetine. Blockade of calcineurin activity with FK506 or cyclosporin A completely prevented Abeta-induced L-LTP deficits. These results suggest that Abeta(1-42) impaired both the induction and maintenance phase of dentate L-LTP through calcineurin-dependent mechanisms. In the concentration range effective for inhibiting L-LTP, Abeta(1-42) also reduced the amplitude of NMDA receptor-mediated synaptic currents in dentate granule cells via a postsynaptic mechanism. In addition, concurrent applications of Abeta(1-42) with the protein synthesis inhibitor caused no additive reduction of L-LTP, indicating a common mechanism underlying the action of both. Thus, inhibition of NMDA receptor channels and disruption of protein synthesis were two possible mechanisms contributing to Abeta-induced L-LTP impairment.     

解构主义与马克思主义相遇,给我们带来了什么启示?--朱尔斯·汤森《德里达对马克思(主义)的解构》一文评介

英国曼彻斯特大学的政治哲学教授朱尔斯·汤森(Jules Townshend)于2004年4月在英国政治学学会的年度会议上宣读了"德里达对马克思(主义)的解构"一文,该文不仅条理清晰地分析了本来并非清晰的德里达的解构思路,同时在回顾十年反响的基础上,指出了德里达解构的意义和局限性即德里达对"幽灵"的解构有助于我们从坏的"幽灵"那里解放出来;不过德里达在解构幽灵的同时同样被幽灵所困扰.本文通过对汤文的评介指出我们从德里达的解构中能够获得从传统思维方式中难以获得的启示,从而拓宽和深化我们的研究视野,从存在的历史境域中理解事物的发展,在真的追求中研究时代中的马克思主义与马克思主义所面临的时代问题.