A Person‐Centered Perspective on Multidimensional Perfectionism in Canadian and Chinese University Students: A Multigroup Latent Profile Analysis

This study investigated the generalizability of the tripartite model of perfectionism across Canadian and Chinese university students. Using latent profile analysis and indicators of perfectionistic strivings, perfectionistic concerns, and neuroticism in both groups, the authors derived a 3‐profile solution: adaptive perfectionists, maladaptive perfectionists, and nonperfectionists. Furthermore, multigroup latent profile analysis supported the construct equivalence of the 3‐profile solution across groups. Results further suggested that a greater proportion of Chinese students could be classified as adaptive perfectionists. Este estudio investigó la generalizabilidad del modelo tripartito de perfeccionismo entre estudiantes universitarios canadienses y chinos. Usando un análisis de perfil latente e indicadores de esfuerzos perfeccionistas, preocupaciones perfeccionistas y neuroticismo en ambos grupos, los autores desarrollaron una solución de 3 perfiles: perfeccionistas adaptados, perfeccionistas inadaptados y no perfeccionistas. Además, el análisis de perfil latente multigrupo confirmó la equivalencia de constructo de la solución de 3 perfiles en estos grupos. Los resultados sugieren también que una mayor proporción de estudiantes chinos podría clasificarse como perfeccionistas adaptados.     

Research Ethics Board (REB) Members’ Preparation for,and Perceived Knowledge of Research Ethics

The Tri-Council Policy Statement: Ethical Conduct for Research Involving Humans (TCPS) was first developed to establish a standard of practice in research ethics by the three federal agencies responsible for funding institutional research in Canada: Canadian Institutes of Health Research (CIHR), Natural Sciences and Engineering Research Council (NSERC), and Social Sciences and Humanities Research Council (SSHRC). In 2010, a second edition of the policy, known as the TCPS 2, was released with updated information and expanded coverage of research ethics issues. According to the TCPS 2, the Agencies’ mandate is “to promote research that is conducted according to the highest ethical standards,” and the TCPS 2 serves as a benchmark for this with respect for human dignity as its underlying value. Research institutions receiving Agency funding are to comply with this policy statement by forming Research Ethics Boards (REBs) to review all research involving human participants. The intention behind this review requirement is to provide a proportionate assessment of the benefit-to-risk ratio of the research, and in that process, to safeguard “respect for persons”, express a “concern for welfare”, and uphold “justice” (CIHR, SSHRC, NSERC 2010, p. 8). Research may not proceed until ethics approval is granted by an institution’s REB. The current study evaluates REB members’ perspectives on their knowledge of research ethics, and juxtaposes these perceptions with those of researchers. Specifically, we are interested in the extent to which REB members with less experience read the TCPS 2, and whether those with less experience have decreased confidence in their ethics knowledge.     

Syllabic tone articulation influences the identification and use of words during Chinese sentence reading: Evidence from ERP and eye movement recordings

In two experiments, we examined the contribution of articulation-specific features to visual word recognition during the reading of Chinese. In spoken Standard Chinese, a syllable with a full tone can be tone-neutralized through sound weakening and pitch contour change, and there are two types of two-character compound words with respect to their articulation variation. One type requires articulation of a full tone for each constituent character, and the other requires a full- and a neutral-tone articulation for the first and second characters, respectively. Words of these two types with identical first characters were selected and embedded in sentences. Native speakers of Standard Chinese were recruited to read the sentences. In Experiment 1, the individual words of a sentence were presented serially at a fixed pace while event-related potentials were recorded. This resulted in less-negative N100 and anterior N250 amplitudes and in more-negative N400 amplitudes when targets contained a neutral tone. Complete sentences were visible in Experiment 2, and eye movements were recorded while participants read. Analyses of oculomotor activity revealed shorter viewing durations and fewer refixations on—and fewer regressive saccades to—target words when their second syllable was articulated with a neutral rather than a full tone. Together, the results indicate that readers represent articulation-specific word properties, that these representations are routinely activated early during the silent reading of Chinese sentences, and that the representations are also used during later stages of word processing.     

The use of probabilistic lexicality cues for word segmentation in Chinese reading

In an eye-tracking experiment we examined whether Chinese readers were sensitive to information concerning how often a Chinese character appears as a single-character word versus the first character in a two-character word, and whether readers use this information to segment words and adjust the amount of parafoveal processing of subsequent characters during reading. Participants read sentences containing a two-character target word with its first character more or less likely to be a single-character word. The boundary paradigm was used. The boundary appeared between the first character and the second character of the target word, and we manipulated whether readers saw an identity or a pseudocharacter preview of the second character of the target. Linear mixed-effects models revealed reduced preview benefit from the second character when the first character was more likely to be a single-character word. This suggests that Chinese readers use probabilistic combinatorial information about the likelihood of a Chinese character being single-character word or a two-character word online to modulate the extent of parafoveal processing.     

Cross-cultural differences and similarities underlying other-race effects for facial identity and expression

Perceptual advantages for own-race compared to other-race faces have been demonstrated for the recognition of facial identity and expression. However, these effects have not been investigated in the same study with measures that can determine the extent of cross-cultural agreement as well as differences. To address this issue, we used a photo sorting task in which Chinese and Caucasian participants were asked to sort photographs of Chinese or Caucasian faces by identity or by expression. This paradigm matched the task demands of identity and expression recognition and avoided constrained forced-choice or verbal labelling requirements. Other-race effects of comparable magnitude were found across the identity and expression tasks. Caucasian participants made more confusion errors for the identities and expressions of Chinese than Caucasian faces, while Chinese participants made more confusion errors for the identities and expressions of Caucasian than Chinese faces. However, analyses of the patterns of responses across groups of participants revealed a considerable amount of underlying cross-cultural agreement. These findings suggest that widely repeated claims that members of other cultures “all look the same” overstate the cultural differences.     

注意控制与短时记忆的知觉组织

、考察了短时记忆中的知觉组织是否受双作业时指导语引导的注意策略控制。各有24名北京大学本科生参加了自由回忆和顺序回亿实验。实验任务有2种：记忆和声音监控。声音监控或者安排在记忆编码阶段,或者安排在记忆提取阶段。双作业时的指导语类型有3种,分别强调记忆、声音监控或两种作业同样重要。记忆项目表分2种：不分组和知觉分组。研究发现：自由回忆中的知觉组织仅受编码阶段的指导语影响;顺序回忆中的知觉组织仅受提取阶段的指导语影响。作者设想,短时记忆中的知觉组织在编码和提取阶段都受注意控制,但记忆类型不同,注意控制的作用地点和表现形式也有所不同。     

肿瘤抗原与肿瘤免疫

通过自身的免疫系统对肿瘤细胞进行杀灭已成为极具潜力的抗肿瘤手段。肿瘤抗原与机体对肿瘤细胞的免疫之间形成了一个此消彼长的矛盾关系,研究肿瘤研究自身的免疫学特性以及肿瘤细胞的免疫原性之间相互关系的问题已成为当前研究中的热点。一方面,可利用增强肿瘤细胞的抗原性来增强机体的免疫排斥反应;另一方面,纠正机体免疫系统的功能障碍,以增强其刺激免疫应答的能力,并辨证地分析了这两方面在肿瘤免疫排斥中的作用及相应的解决对策。     

21世纪医学教育的知识结构初探

在知识爆炸的今天,个人全面系统掌握医学基础知识只能是一个幻想,新世纪要求有关教育知识结构的变革。继续延用经典医学学科多平层型知识结构进行21世纪医学教育已不适应,可满足需求的应是以可持续发展的新知识为核心的核心－壳层型新知识结构。目前似应以细胞知识为核心重组医学教育知识结构体系,按应用基础、临床等知识壳层对冗杂的经典学科知识进行精炼与重组。     

浅谈中西方传统的德性伦理

东西方传统的德性伦理具有不同的内涵。中国传统德性论认为,德性是与生俱来的;西方传统认为,人的德性是后天养成的。中国的德性伦理不仅规范处理人与人之间的关系,也处理人与自然之间的关系;西方的德性伦理则只规范处理人与人之间的关系。中国的德性伦理相对独立;西方的德性伦理则要受理性的支配和指导。     

肿瘤的预防需要提前安排

很多人觉得肿瘤离我们很遥远;许多病人和家属常常对于家里人患肿瘤觉得很突然。对于肿瘤,目前重要的误区之一是:肿瘤似乎很难预先知道,治疗也就困难,更谈不上预防。那么,真实的情况是怎样?我们应当如何正确对待?成了大家关注的问题。但是最主要的是应当采取可能的措施,把预防工作做到前面,千万不要等到肿瘤晚期才开始治疗。作为一个在临床上这一领域内临床工作近半个世纪的老医生,我愿意提出以下四方面看法及建议和大家商榷,并希望能够引起大家关注、讨论。一、肿瘤在世界各地的发生情况虽然肿瘤是一类古老的疾病,不但人类有,植物和其他动物…