从知觉负载理论来理解选择性注意

知觉负载理论被认为解决了选择性注意研究的早选择和晚选择观点之争。当前任务对注意资源的耗用程度决定了与任务无关的干扰刺激得到多少加工,从而导致在低知觉负载下,注意资源自动溢出去加工干扰刺激（晚选择）,而在高知觉负载下,注意资源被当前任务耗尽而无法加工干扰刺激（早选择）。知觉负载理论提出后,研究者进行了一系列研究。一部分工作专注于知觉负载对选择性注意的调节作用;另外一些工作则关注其他认知过程如何影响注意资源的分配,其中知觉负载与工作记忆负载的关系是当前关注重点。     

拥有关系信息情境模型建构的影响因素

该研究修正了Radvansky1997年的实验设计 ,运用扇效应技术系统地探讨影响建构拥有关系情境模型的因素。共包括 4个实验 ,被试为 180名一年级本科生 ,研究材料是“1人 /多物”与“多人 / 1物”两类表示拥有关系的句型 ,每类句型都有 3种扇水平 ,用计算机逐个呈现句子 ,要求被试迅速再认作出按键反应 ,用MANOVA分析了被试对不同扇水平的两类句型的反应时。实验 1在中文条件下重复了Radvansky1997年的实验 ;实验 2探讨在明确的相同空间条件下 ,对“多人买 1物”拥有行为句式的整合是否表现出扇效应 ;实验 3探讨在信息采用顺向展开的情况下 ,“多人买 1物”拥有行为句式的整合是否表现出扇效应 ;实验 4进一步探讨在具有相同时空状语的条件下 ,“1人有多物”与“多人有 1物”两类拥有状态句式的整合是否表现出扇效应。结果表明 ,当具有明确的时空信息情况下 ,或者当信息顺向展开的情况下 ,“多人买 1物”的拥有行为句式的整合均没有表现出扇效应 ;而在有相同时空状语情况下 ,“1人有多物”的拥有状态句式的整合也没有表现出扇效应 ;说明这些句式可以整合为同一情境模型 ,与Radvansky的研究结果不同。研究结果初步表明 ,享有共同概念的若干事件信息是否整合为同一个情境模型 ,受到动词的动作性程度、是否有相     

汉语词汇产生中语义、字形和音韵激活的时间进程

通过图画－词汇干扰实验范式探索汉语单字词产生中语义、字形和语音激活的时间进程。实验一和实验二的结果综合表明：当SOA为-300 ms~0 ms时,存在语义抑制效应,当SOA为-100 ms~100 ms时,存在字形促进效应,当SOA为100 ms时,存在语音促进效应。实验结果支持交互激活理论的观点。实验成功地分离了字形促进效应和语音促进效应,确定了语义、字形和语音这三种信息在汉语口语词汇产生中通达的先后次序,讨论了字形信息在词汇产生中的重要作用,以及被试是否在实验中使用了策略。     

对我国肝移植现状的系统化思考

阐述了我国肝移植的现状及新时期肝移植的新特点,用系统的观点分析了我国肝移植实施中存在的问题,提出了今后如何系统化发展我国肝移植事业的几点设想。     

A variable-selection heuristic for K-means clustering

One of the most vexing problems in cluster analysis is the selection and/or weighting of variables in order to include those that truly define cluster structure, while eliminating those that might mask such structure. This paper presents a variable-selection heuristic for nonhierarchical (K-means) cluster analysis based on the adjusted Rand index for measuring cluster recovery. The heuristic was subjected to Monte Carlo testing across more than 2200 datasets with known cluster structure. The results indicate the heuristic is extremely effective at eliminating masking variables. A cluster analysis of real-world financial services data revealed that using the variable-selection heuristic prior to the K-means algorithm resulted in greater cluster stability.     

Ambiguity in Our Technical Society

The spiritual situation at the turn of the millennium can be interpreted through Paul Tillich's appropriation of modernity, by analysis of the determinative structures and decisive trends of our age. The methods and organization of industry determine modern society. Spiritually, this situation results in the proliferation of means without ends, the objectification of natural structures, and the reduction of persons to things. Extrapolating from Tillich's analysis, the spiritual situation at the turn of the millennium can be understood as a quasi-religious struggle between the movements of liberal individualism and multiculturalism, both of which lose the sense of ambiguity. The communitarian movement and related interpretations remain the minority voice offering a mediating position.     

Attachment hierarchies in Bangladeshi women in couple-initiated and arranged marriages

Attachment theory posits that in adulthood, romantic partners typically fill the role of primary attachment figure, yet few studies have examined whether these findings hold in cultures that practice arranged marriage or that emphasise collectivistic values and filial piety. In the current study, we compared attachment hierarchies in 116 Bangladeshi women engaged to be married or in the first 3 years of couple-initiated (also known as love) marriages and arranged marriages. Women in couple-initiated marriages reported greater use of their partners for the attachment functions of safe haven and secure base than women in arranged marriages. However, women in both groups were more likely to identify one of their parents than their partner as their primary attachment figure. Although replication is necessary, these findings suggest that partners may not be universally prioritised above parents in the attachment hierarchy and that attachment theory's assumptions of individuation from parents in adulthood may not apply cross-culturally. Findings are discussed in terms of cultural differences from samples previously represented in attachment research, such as kinship structures, the meaning of marriage and filial piety.     

Problem Solvers Adjust Cognitive Offloading Based on Performance Goals

When incorporating the environment into mental processing (cf., cognitive offloading), one creates novel cognitive strategies that have the potential to improve task performance. Improved performance can, for example, mean faster problem solving, more accurate solutions, or even higher grades at university.¹ Although cognitive offloading has frequently been associated with improved performance, it is yet unclear how flexible problem solvers are at matching their offloading habits with their current performance goals (can people improve goal‐related instead of generic performance, e.g., when being in a hurry and aiming for a “quick and dirty” solution?). Here, we asked participants to solve a cognitive task, provided them with different goals—maximizing speed (SPD) or accuracy (ACC), respectively—and measured how frequently (Experiment 1) and how proficiently (Experiment 2) they made use of a novel external resource to support their cognitive processing. Experiment 1 showed that offloading behavior varied with goals: Participants offloaded less in the SPD than in the ACC condition. Experiment 2 showed that this differential offloading behavior was associated with high goal‐related performance: fast answers in the SPD, accurate answers in the ACC condition. Simultaneously, goal‐unrelated performance was sacrificed: inaccurate answers in the SPD, slow answers in the ACC condition. The findings support the notion of humans as canny offloaders who are able to successfully incorporate their environment in pursuit of their current cognitive goals. Future efforts should be focused on the finding's generalizability, for example, to settings without feedback or with high mental workload.     

Inferences about which of J dependent groups has the largest robust measure of location

Recently, a multiple comparisons procedure was derived with the goal of determining whether it is reasonable to make a decision about which of J independent groups has the largest robust measure of location. This was done by testing hypotheses aimed at comparing the group with the largest estimate to the remaining J − 1 groups. It was demonstrated that for the goal of controlling the familywise error rate, meaning the probability of one or more Type I errors, well-known improvements on the Bonferroni method can perform poorly. A technique for dealing with this issue was suggested and found to perform well in simulations. However, when dealing with dependent groups, the method is unsatisfactory. This note suggests an alternative method that is designed for dependent groups.     

重型肝炎治疗方案的理性选择

针对我国重型肝炎治疗现状,对重型肝炎常用的以及部分有争议的治疗药物和方法进行分析和讨论,就如何选择治疗方案提出医疗原则,认为应采取内科治疗-人工肝-肝移植的综合治疗模式,结合患者的治疗愿望及经济承受力,理性地选择治疗方案,以期达到合理、有效和经济的目的。