不同线索下特质焦虑个体的返回抑制

焦虑与注意偏向的研究是近年来情绪与认知领域的热点。为探讨特质焦虑个体的注意偏向特点及其返回抑制能力是否受不同线索的调节, 采用特质焦虑量表筛选高特质焦虑大学生29名, 低特质焦虑大学生28名完成线索-靶子任务。要求被试在提示线索消失后, 对位置进行快而准地辨别反应, 分别探索中性和情绪性提示线索下被试的返回抑制。结果发现：(1)在中性线索条件下, 高焦虑个体平均反应时慢于低焦虑个体。(2) 在情绪线索条件下, 高焦虑个体在负性线索下的反应时小于在正性线索下的反应时; 高、低焦虑个体在各种SOA条件下均出现了返回抑制, 但各组返回抑制量受到情绪线索的调节：在正性情绪线索条件下, 两组返回抑制量没有显著差异; 在负性情绪线索下, 高焦虑个体返回抑制量显著小于低焦虑个体。这表明, (1)焦虑个体的注意偏向受到刺激信息的影响：只对负性情绪线索出现注意警觉; (2)只有在涉及负性情绪信息时高、低焦虑个体返回抑制能力才有差异, 高焦虑个体存在对负性情绪线索的抑制困难。     

Mapping the time course of the positive classification advantage: An ERP study

The aim of the present study was to investigate the time course of the positive advantage in the expression classification of faces by recording event-related potentials (ERPs). Although neutral faces were classified more quickly than either happy or sad faces, a significant positive classification advantage (PCA)—that is, faster classification for happy than for sad faces—was found. For ERP data, as compared with sad faces, happy faces elicited a smaller N170 and a larger posterior N2 component. The P3 was modulated by facial expressions with higher amplitudes and shorter latencies for both happy and neutral stimuli than for sad stimuli, and the reaction times were significantly correlated with the amplitude and latency of the P3. Overall, these data showed robust PCA in expression classification, starting when the stimulus has been recognized as a face revealed by the N170 component.     

复合命题理解能力的发展

采用命题-图形匹配实验法,探讨了儿童、少年和青年人三个阶段的5种类型复合命题理解能力的发展.结果表明:(1)随着年龄增长,复合命题理解能力迅速提高;(2)对复合命题理解的难易,决定于构建的心理模型的数目.理解能力的发展根据心理模型的类型呈现不同的步调,单模型命题的理解在小学阶段已经很好地获得发展,双模型命题则在初中阶段获得较好的发展,三模型命题发展较迟,直至成年仍需发展.     

陈虬生平及利济医学堂的历史沿革

陈虬创立的利济医学堂是我国第一所中医专门学校,在中国近代史上拥有特殊的重要地位.介绍了陈虬的生平、政治思想及医学思想、利济医学堂的历史及沿革;简述利济医学堂创立与陈虬所在时代的社会历史背景、永嘉学派"学以致用"的文化学术渊源及其自身年轻时患疾不第密切相关.     

追寻“一只灵巧公正的手”——政府作用与市场公正的新思考

“市场公正”是指市场经济制度本身所蕴涵的，并渗透于各项市场制度制定、执行、监督等环节以及市场机制顺利运行过程中的一种价值或精神。然而，政府的不当作用与干预，极易引起供求、竞争、价格等市场机制的扭曲，造成不公正的利益分配过程和局面，降低市场经济公正程度，损害市场公正。所以，政府应充当一只灵巧公正的手，在确定好政府作用的范围、内容、方式及力度的前提下，对社会经济进行科学适度的干预，在实现市场公正与效率的基础上，追寻更理想的公正与效率。     

从高校学生的自杀现象看培养科学素质的紧迫性

数据显示:2003年全国学生自杀和疑似自杀案是27起;2004年为68起;2005年,116起;2006年130起。"在2007年5月份的8日至17日的短短9天内,北京就有5名高校学生跳楼身亡,还有天津、武汉等地也发生了类似悲剧。"(5     

Comparison of Schizophrenic Patients' Families and Normal Families in China,Using Chinese Versions of FACES-II and the Family Environment Scales

The lack of measures that systematically evaluate the characteristics and functioning of Chinese families is hindering the development of appropriate family interventions for schizophrenia in China. We assessed the reliability and validity of revised and adapted Chinese versions (CV) of the Family Adaptability and Cohesion Evaluation Scales (FACES-II-CV) and the Family Environment Scales (FES-CV) and administered these instruments to 120 respondents from families with a schizophrenic member and 126 respondents from control families. The psychometric properties of the FACES-II-CV and of the FES-CV Cohesion, Conflict, Intellectual-Cultural Orientation, and Active-Recreational Orientation scales are satisfactory, so they are appropriate for use in China; the remaining six FES-CV scales require further culturally appropriate revision. Compared to control families, families with schizophrenic patients in China have higher conflict, lower cohesion, poor adaptability, and are less likely to be involved in intellectual and recreational activities. These differences remained significant after adjusting for family and respondent characteristics.     

Do CEOs Matter to Firm Strategic Actions and Firm Performance? A Meta‐Analytic Investigation Based on Upper Echelons Theory

What roles do CEOs play in firm performance? To address this question, the management field has accumulated a substantial amount of research over the past 3 decades built on upper echelons theory (UET), which posits that CEO characteristics manifest in firm strategic actions and, in this way, future firm performance. Hence, there is a need to systematically amass and take stock of prior empirical findings for UET testing and development. We use meta‐analytic techniques to synthesize prior UET research on the relationships among commonly studied CEO characteristics, firm strategic actions, and future firm performance. Based on 308 studies, meta‐analytic results generally support UET's predictions with a few exceptions: CEO characteristics (i.e., tenure, formal education, prior career experience, and positive self‐concept) are significantly associated with firm strategic actions, which in turn are significantly related to future firm performance. Moreover, CEO characteristics (i.e., age, tenure, formal education, and prior career experience) are positively related to future firm performance. In addition, fine‐grained analyses have revealed interesting and important relationships between specific measures of CEO characteristics (e.g., CEO prior task experience) and firm outcomes (e.g., firm strategic actions that match with CEO prior task experience). Implications for theory, future research, and practice are discussed.     

在综合基础上创新——鼠伤寒菌pla基因及其功能研究的思考

鼠伤寒菌pla基因及功能的研究从课题确立到取得结果整个过程,充分展现了综合研究方法在现代科学研究中的重要作用;在综合基础上的创新是科学研究成功的中心环节。     

伦理的经济意义新论

讨论效率的经济意义不能仅仅局限于伦理的工具价值 ,而应当将伦理的内在价值和工具价值两者结合起来。伦理本身也是一种效率 ,同样是企业值得欲求的目标 ,只有这样 ,才能有助于一种综合效率的提升。