The neural basis of insight problem solving: an event-related potential study

The electrophysiological correlates of successful insight problem solving (Chinese logogriphs) were studied in 18 healthy subjects using high-density event-related potentials (ERPs). A new experimental paradigm (learning-testing model) was adopted in order to make subjects find a solution on their own initiative rather than receive an answer passively. Results showed that Successful guessed logogriphs elicited a more positive ERP deflection (P200-600) than did Unsuccessful guessed logogriphs in the time window from 200 to 600 ms after onset of the stimuli. Subsequently Successful logogriphs elicited a more negative ERP deflection than did Unsuccessful logogriphs in the time windows of 1500-2000 ms (N1500-2000) and 2000-2500 ms (N2000-2500). Maps of the P200-600 showed strong activity in the midline parieto-occipital scalp regions. Dipole analysis localized the generator of P200-600 in the left superior temporal gyrus and parietotemporo-occipital cortex areas. The N1500-2000 and N2000-2500 had a distinct activation over left frontal scalp regions. Dipole analysis localized the generator of the N1500-2000 in the anterior cingulate cortex (ACC) and the N2000-2500 in the posterior cingulate cortex (PCC). This result indicates that the parietotemporo-occipital cortex areas might be involved in forming rich associations in the early stage of successful logogriph solving. Then, the ACC might play an important role in the breaking mental set and the forming of novel associations. At last, "Aha" feeling might activate the PCC.     

A Comparison of the Common‐Item and Random‐Groups Equating Designs Using Empirical Data

We designed this study to evaluate several data collection and equating designs in the context of item response theory (IRT) equating. The random‐groups design and the common‐item design have been widely used for collecting data for IRT equating. In this study, we investigated four equating methods based upon these two data collection designs, using empirical data from a number of different testing programs. When the randomly equivalent group assumption was reasonably met, the four equating methods tended to produce highly comparable results. On the other hand, equating methods based upon either of the equating designs produced dissimilar results. Sample size can have differential effects on the equating results produced by the different equating methods. In practice, a common‐item equivalent‐groups design often produces unacceptably large differences in the group mean due to various anomalies such as context effects, poor quality of common items, or a very small number of common items. In such cases, a random‐groups design would produce more stable equating results.     

《资本论》的哲学意义

如何看待马克思《资本论》的哲学意义?这是一个迄今为止远未完全解决的重大问题。在国内外学术界中,有两种较为流行的理论观点:一种观点认为,《资本论》只是政治经济学著作,马克思一生只是一个经济学家,马克思《资本论》谈不上有什么特殊的、重大的哲学意义,大多数西方经济学著     

范畴变量对虚假记忆的影响

以中文词为材料,考察范畴样例重复,样例熟悉性、典型性和范畴大小对虚假再认的影响。实验1表明,随着范畴样例增加,虚假再认也增加。实验2表明,对高熟悉的样例虚假再认多。实验3表明,对高典型样例更易虚假再认。实验4表明,和大范畴样例比,对小范畴样例有更多的虚假再认。整个结果可以用激活扩散理论统一地加以解释     

肝癌肝移植与放弃治疗的伦理选择

探讨我国肝癌肝移植现状及其伦理要求.在我国卫生资源短缺且分配不公的形式下,肝移植手术大幅度增长的背后隐藏的是尖锐的伦理冲突.后现代主义哲学与伦理学,尤其是生命价值理论对放弃治疗予以理论支撑.在肝癌肝移植与放弃治疗的伦理冲突中,做出公平审慎的选择.     

Multidimensional Gender Identity and Psychological Adjustment in Middle Childhood: A Study in China

This study examined the multiple components of gender identity (Egan and Perry 2001) and their relationships with psychological adjustment among 201 boys and 160 girls (aged 9 to 12 years) in Mainland China. Boys were found to be more content about their gender but feel more pressure to conform to gender stereotypes than girls. No gender or age differences were found in children’s intergroup bias. Higher gender typicality was related to greater global self-worth, greater social competence, and lower sense of loneliness. However, neither felt pressure nor gender contentment significantly predicted psychological adjustment. These results were compared with findings of previous United States-based studies to highlight the impacts of cultural contexts on gender identity and their effects on adjustment.     

Determining Relationships Between Physical Health and Spiritual Experience,Religious Practices,and Congregational Support in a Heterogeneous Medical Sample

Previous research indicates that increased religiosity/spirituality is related to better health, but the specific nature of these relationships is unclear. The purpose of this study was to determine the relationships between physical health and spiritual belief, religious practices, and congregational support using the Brief Multidimensional Measure of Religiousness/Spirituality and the Medical Outcomes Scale Shortform-36. A total of 168 participants were surveyed with the following medical disorders: Cancer, Spinal Cord Injury, Traumatic Brain Injury, and Stroke, plus a healthy sample from a primary care setting. The results show that individuals with chronic medical conditions do not automatically turn to religious and spiritual resources following onset of their disorder. Physical health is positively related to frequency of attendance at religious services, which may be related to better health leading to increased ability to attend services. In addition, spiritual belief in a loving, higher power, and a positive worldview are associated with better health, consistent with psychoneuroimmunological models of health. Practical implications for health care providers are discussed.     

家属代替知情同意的现状调查

为了解家属代替知情同意的现状, 剖析导致家属成为知情同意权行使主体的现实原因, 随机选取215份临床知情同意书, 记录分析其签署人, 并对相关患者、家属、主管医生进行调查或访谈。结果显示, 家属代替知情同意的发生率为6.0%, 主要发生于老年、经济不独立、生活不能自理、就诊于急诊和不愿知情的患者。表明家属代替知情同意现象依然存在, 仅依靠修改法律条文维护患者权益作用有限, 提高养老和医疗保障、设置医院内司法干预制度可能是有效措施。     

巴蜀水月观音图像演变探析

<正>水月观音自诞生起便成为画师、工匠们热衷于表现的对象,水月观音图像也因此受到社会各阶层的关注并广泛流传开来。对于水月观音,学界很早就展开了研究,并取得了一系列成果。通过对这些研究成果的梳理,我们发现研究者的关注点多在水月观音的起源及文化意涵。图像艺术方面的研究,也主要立足于以敦煌石窟为代表的北方石窟,对于