改变初中生吸烟态度的同伴教育干预研究

目的:检验同伴教育干预实验是否能改变初中生的吸烟态度。方法:通过KAP问卷对实验组和对照组吸烟初中生收集量化数据,评价干预效果。结果:⑴同质同伴教育者在吸烟知识、态度和行为上有明显变化(后测结果显示三组被试在知识、态度和行为上的Z值分别为:9.036、8.278、7.206,P<0.05);⑵实验组比对照组在吸烟知识、态度和行为上有显著提高(同质组与比照组在知识、态度和行为上的Z值分别为:-2.400、-2.206、-2.123,P<0.05;异质组与比照组在知识、态度和行为上的Z值分别为:-2.400、-2.300、-2.430,P<0.05);⑶同质与异质实验组在吸烟知识、态度和行为上有显著提高(同质组前后测在知识、态度和行为上的Z值分别为:-2.919、-2.371、-2.437,P<0.05;异质组前后测在知识、态度和行为上的Z值分别为:2.890、-2.091、-2.419,P<0.05);[4]同质与异质同伴组的比较没有差异。结论:同伴教育干预方法可以在一定程度上改变初中生的吸烟态度,同质团体与异质团体在同伴教育干预中不存在差异。     

Organization of visual short-term memory

The authors examined the organization of visual short-term memory (VSTM). Using a change-detection task, they reported that VSTM stores relational information between individual items. This relational processing is mediated by the organization of items into spatial configurations. The spatial configuration of visual objects is important for VSTM of spatial locations, colors, and shapes. When color VSTM is compared with location VSTM, spatial configuration plays an integral role because configuration is important for color VSTM, whereas color is not important for location VSTM. The authors also examined the role of attention and found that the formation of configuration is modulated by both top-down and bottom-up attentional factors. In summary, the authors proposed that VSTM stores the relational information of individual visual items on the basis of global spatial configuration.     

Psychological contract and organizational citizenship behavior in China: investigating generalizability and instrumentality

This study examined the generalizability of psychological contract forms observed in the West (D. M. Rousseau, 2000) to China. Using 2 independent samples, results confirmed the generalizability of 3 psychological contract forms: transactional, relational, and balanced. This study also examined the nature of relationships of psychological contracts with organizational citizenship behavior (OCB). In particular, this study explored the role of instrumentality as a mediating psychological process. The authors found evidence that instrumentality mediates the relationship of relational and balanced forms with OCB; however, the transactional contract form is directly related to OCB. The authors discuss the implications of these results for the meaning of psychological contracts and OCB in China and raise issues for future research.     

论儒家思想中的"人"与"自然"之关系:兼论其21世纪之启示

本文探讨儒家思想传统中“人”与“自然”之关系。本文先从比较文化史视野,析论中国思维方式之特质在于“联系性思维方式”。本文指出,儒家思想传统以“联系性思维方式”为基础,强调“人”与“自然”之间是一种相即相融并互相渗透的关系。“自然”是“人”的创生者,“人”也是“自然”的参与者。儒家思想家主张“人”与“自然”之间具有连续性与一体性之关系。这两种关系之所以可能,其基础正在于人与宇宙万物都以生生不已的仁德为其本性。“仁”既内在于每个人的心性之中,又超越于每个个体之上,成为宇宙万物之共同质素。而儒家思想中“人”与“自然”之连续性与一体观的建立与发展,正是以人“心”之自觉为其基础。     

Implicit scene learning is viewpoint dependent

When novel scenes are encoded, the representations of scene layout are generally viewpoint specific. Past studies of scene recognition have typically required subjects to explicitly study and encode novel scenes, but in everyday visual experience, it is possible that much scene learning occurs incidentally. Here, we examine whether implicitly encoded scene layouts are also viewpoint dependent. We used the contextual cuing paradigm, in which search for a target is facilitated by implicitly learned associations between target locations and novel spatial contexts (Chun & Jiang, 1998). This task was extended to naturalistic search arrays with apparent depth. To test viewpoint dependence, the viewpoint of the scenes was varied from training to testing. Contextual cuing and, hence, scene context learning decreased as the angular rotation from training viewpoint increased. This finding suggests that implicitly acquired representations of scene layout are viewpoint dependent.     

免疫性疾病治疗新途径：诱导细胞程序性死亡

免疫性疾病是一大类难治性的免疫紊乱而造成的疾病,尤其是自身免疫性疾病的一直困扰着免疫学家。传统的免疫治疗是根据不同疾病的需要增强免疫,调节免疫和抑制的方式进行,以辩证的观点分析免疫的增殖与程序性死亡这一对矛盾,认为：免疫性疾病的本质是免疫细胞增殖与程序性恨的失衡,因而通过诱导免疫细胞程序性死亡将成为免疫治疗的新途径。     

Creating False Memories of Words with or without Recognition of List Items: Evidence for Nonconscious Processes

Subjects exposed to lists of semantically related words falsely remember nonstudied words that are associated with the list items (e.g., Deese, 1959; Roediger & McDermott, 1995). To determine if subjects would demonstrate this false memory effect if they were unable to recognize the list items, we presented lists of semantically related words with or without a concurrent memory load at rates of 2 s, 250 ms, or 20 ms per word (Experiment 1, between-subjects design) and 2 s or 20 ms per word (Experiment 2, within-subjects design). We found that the subjects falsely recognized semantically related nonstudied words in all conditions, even when they were unable to discriminate studied words from unrelated nonstudied words. Recognition of list items was unnecessary for the occurrence of the false memory effect. This finding suggests that this memory illusion can be based on the nonconscious activation of semantic concepts during list presentation.     

Do they ‘look’ different(ly)? Dynamic face recognition in Malaysians: Chinese,Malays and Indians compared

Previous cross-cultural eye-tracking studies examining face recognition discovered differences in the eye movement strategies that observers employ when perceiving faces. However, it is unclear (1) the degree to which this effect is fundamentally related to culture and (2) to what extent facial physiognomy can account for the differences in looking strategies when scanning own- and other-race faces. In the current study, Malay, Chinese and Indian young adults who live in the same multiracial country performed a modified yes/no recognition task. Participants' recognition accuracy and eye movements were recorded while viewing muted face videos of own- and other-race individuals. Behavioural results revealed a clear own-race advantage in recognition memory, and eye-tracking results showed that the three ethnic race groups adopted dissimilar fixation patterns when perceiving faces. Chinese participants preferentially attended more to the eyes than Indian participants did, while Indian participants made more and longer fixations on the nose than Malay participants did. In addition, we detected statistically significant, though subtle, differences in fixation patterns between the faces of the three races. These findings suggest that the racial differences in face-scanning patterns may be attributed both to culture and to variations in facial physiognomy between races.     

Visual marking: dissociating effects of new and old set size

Visual marking makes it possible to ignore old items during search. In a typical study, old items are previewed 1 s before adding an equal number of new items, one of which is the target. Previewing half of the items reduces the search slope relating response time (RT) to overall set size by half. However, this manipulation sometimes only reduces overall RT but not search slope (Experiment 1). By orthogonally varying the numbers of old and new items, Experiment 2 shows that old and new set sizes interactively affect visual marking. Given a constant new set size, the size of the old set has negligible effect on RT. However, increasing the new set size reduces the preview benefit in overall RT. Experiment 3 shows that this reduction may be restricted to paradigms that use temporal segregation cues. Studies should vary old and new set size orthogonally to avoid missing a visual marking effect where one may be present.