语篇理解中语境对代词理解的影响

该研究考察了语篇理解中整体语境和局部语境对代词理解的影响。向被试呈现语篇,其中包括带有语义偏向的整体语境和局部语境以及代词。要求被试判断代词的所指。结果发现,当代词和整体语境出现时,被试并不立刻判断,等局部语境也出现以后,才判断代词的先行词。这一结果支持“首先建立句子袭征,再把句子表征与语篇表征相整合”的分阶段加工观点。     

Sustained attention to local and global target features is different: Performance and tympanic membrane temperature

Vision researchers have investigated the differences between global and local feature perception. No one has, however, examined the role of global and local feature discrimination in sustained attention tasks. In this experiment participants performed a sustained attention task requiring either global or local letter target discriminations or watched the same displays without any work imperative. Reaction time to targets was slower when global feature discriminations were required than when local feature discriminations were required. Tympanic membrane temperature (TMT) was utilized in this study as an index of cerebral activation. Participants in the global letter detection condition had elevated post-task right TMT, indicative of reduced cerebral activation in the right hemisphere, in comparison to participants in the local letter detection or no-work imperative conditions. Both the performance and physiological results of this study indicate increased cognitive fatigue when global feature discriminations are required.     

Combining diversity and dispersion criteria for anticlustering: A bicriterion approach

Most partitioning methods used in psychological research seek to produce homogeneous groups (i.e., groups with low intra-group dissimilarity). However, there are also applications where the goal is to provide heterogeneous groups (i.e., groups with high intra-group dissimilarity). Examples of these anticlustering contexts include construction of stimulus sets, formation of student groups, assignment of employees to project work teams, and assembly of test forms from a bank of items. Unfortunately, most commercial software packages are not equipped to accommodate the objective criteria and constraints that commonly arise for anticlustering problems. Two important objective criteria for anticlustering based on information in a dissimilarity matrix are: a diversity measure based on within-cluster sums of dissimilarities; and a dispersion measure based on the within-cluster minimum dissimilarities. In many instances, it is possible to find a partition that provides a large improvement in one of these two criteria with little (or no) sacrifice in the other criterion. For this reason, it is of significant value to explore the trade-offs that arise between these two criteria. Accordingly, the key contribution of this paper is the formulation of a bicriterion optimization problem for anticlustering based on the diversity and dispersion criteria, along with heuristics to approximate the Pareto efficient set of partitions. A motivating example and computational study are provided within the framework of test assembly.     

Women's aggression: An African case study

Theories of human aggression tend to emphasize aggression as a male phenomenon. An ecological approach to aggression implies that females ought to be aggressive when confrontation is a viable means of attaining scarce resources. In modern Zambia, intrafemale aggression occurs at the individual and socioeconomic class levels. At the individual level, aggression occurs between women for a specific man or his economic resources both within households and beyond their boundaries. At the class level, elite and poor women combine forces to victimize subelite women. Both levels of aggression involve competition over the scarce resource of socially desirable men and their support. Competition is due to the unequal access of the genders to opportunities for labor-force participation and hence different positions in the stratification system, the desire for hypergamous marriage, marital instability, changing role expectations, and the increased dependency of women on men.     

美国临床心理学培养模式的演进及展望

受到社会、组织及自身发展因素的影响, 美国临床心理学在不同时期存在着不同的培养模式。文章选取“科学家－实践者”模式、“实践者－学者”模式、“临床心理科学家”模式、“当下的临床科学家”模式及“循证实践者”模式等五种最具代表性的经典模式, 介绍了1949年以来美国临床心理学培养模式的特点及发展规律。认为“循证实践者”模式修正了前面四种培养模式的个体主义倾向, 将单个的“科学家－实践者”, 分化成“科学家”与“实践者”两个集团, 强调实践者遵循科学家提供的最佳证据, 考虑病人的特征、文化与价值观, 在管理者协调下开展实践。这种模式代表着当代临床心理学培养模式的发展方向。     

The Meanings of the Community and of the Individual in Slovakia and in Scotland

The purpose of this paper was to examine meanings of the terms ‘individual’, ‘the community’ and ‘local community’ in Slovakia and Scotland. The social, cultural, political and economic histories of these two small European nations are quite different. Slovakia is one of the post-communist countries in which rapid changes have recently taken place. In contrast, Scotland has enjoyed a relatively stable parliamentary democracy within the UK. Two groups of respondents, 200 from Slovakia and 200 from Scotland, were presented with a word association task which included 38 political and economic terms and with two scales containing the same list of terms. They rated phenomena referring to these terms with respect to their importance for the well-being of the individual and to the well-being of the community. The results suggest that for Scots but not for Slovaks, the term ‘local community’ evokes positive associations and that local community is a meaningful concept. The data suggest that local attachments and loyalties were destroyed in Slovakia during communism. (© 1997 by John Wiley & Sons, Ltd.)     

视觉信息加工中的整体优先性

该文综述了视知觉的整体优先性理论,以及关于整体优先性机制的理论及其面临的困难,特别介绍了本文作者近年来开展的一系列关于整体优先性的行为和事件相关电位研究结果,以及根据这些结果提出的一个基于知觉组织和选择性注意相互作用的复合刺激加工的理论模型。     

浅谈门诊手术中局部麻醉的彻底性

门诊手术没有麻醉师的介入,容易存在局部麻醉不彻底的情况。随着医学模式的转变,门诊手术中必须保证局部麻醉的彻底性。外科医师需要从人文关怀的角度出发,结合好几个具体环节,做到彻底的局部麻醉,才能赢得病人的终生信任。     

人脑眶额皮质表征奖赏信息的进展

文章围绕人脑眶额皮质在表征奖赏信息上的核心作用展开,分别从人脑眶额皮质表征奖赏信息的共同神经表征和特异性神经表征特点,奖赏加工和该脑区局部形态特征之间的关系以及眶额皮质表征奖赏信息的时间动态性等角度对最近的重要研究进展进行了一定的梳理和概括。最后,文章讨论了未来研究需要解决的由奖赏类型多样性和脑区间奖赏信息整合复杂性带来的系列问题。     

生物运动加工特异性：整体结构和局部运动的作用

人类具有很强的识别生物体运动信息的能力, 甚至当运动信息仅是由附着在头部和一些重要关节上的光点的运动组成时, 观察者对该信息检测和编码的优势依然存在。光点生物运动信息包含整体信息(如整体形状)和局部信息(如各个点的运动轨迹)。先前的绝大部分研究强调整体形状在生物运动知觉中的作用。最近有研究表明去除了整体结构信息的局部生物运动仍然存在加工优势, 揭示了局部生物运动本身可能包含了一些特异性信息。因此生物运动知觉并非单一现象, 而是一种具有不同加工机制(基于整体结构和基于局部运动)的多水平现象。