工作记忆训练的研究述评*

以往研究表明,工作记忆是一个资源有限的系统,但近年来大量研究发现工作记忆成绩可以通过训练提高。工作记忆训练是指针对低容量的个体进行针对存储系统或者中央执行系统各成分的训练,以提升个体工作记忆绩效及影响任务相关脑区的活动。来自认知神经科学的证据在评估工作记忆训练的效果上起到了重要作用。虽然目前该领域的研究已经取得一定的成绩,但是利用工作记忆训练来改善个体的工作记忆在具体的方法、训练成效等问题上还存在一定的争议。     

阅读中词汇视觉编码年老化的原因:基于消失文本实验的证据

研究采用消失文本范式、操控双词消失的延迟时间,考察中文读者编码两个相邻词汇（词n与词n+1）视觉信息的年老化问题。结果发现,从40 ms延迟时间至160 ms延迟时间的所有消失条件均不影响青年人的句子总阅读时间,这意味着青年人能够并行、快速地同时编码词n与词n+1的视觉信息;而所有消失条件都影响老年人的句子阅读时间,40 ms延迟时间消失条件对总阅读时间的影响程度甚于其他较长延迟时间的消失文本条件,80 ms、120 ms和160 ms延迟时间消失条件对总阅读时间的影响程度完全相同。由这些结果可以确定,中文阅读中词汇视觉编码的年老化同时受视觉与认知因素衰退的影响。     

Kinematics, kinetics, and electromyogram of ankle during drop landing: a comparison between dominant and non-dominant limb

The biomechanical difference between the dominant and non-dominant limb has seldom been studied during double-leg landing. The objective of this study was to evaluate the effectiveness of limb laterality on the ankle kinematics, kinetics and electromyogram (EMG) during drop landing. Sixteen healthy adults were recruited and dropped individually from platforms with three different heights (0.32 m, 0.52 m, and 0.72 m). The ground reaction force, ankle joint kinematics, and surface EMG of tibialis anterior (TA) and lateral gastrocnemius (LG) were measured in both lower extremities. Two-way analysis of variance was used to analyze the effects of laterality and dropping height. The peak angular velocities in dorsiflexion and abduction were significantly higher in the dominant ankle, whereas the pre- and post-landing EMG amplitudes of the TA were significantly higher in the non-dominant limb. Compared with the dominant side, the non-dominant ankle has a more effective protective mechanism in that excessive joint motion is restrained by greater ankle flexor activity. Compared with the non-dominant side, the dominant ankle joint is in greater injury risk during drop landing, and data measured in the dominant limb may produce more conservative conclusions for injury protection or prediction.     

Extreme response style as a cultural response to climato‐economic deprivation

We investigated the effects of climato‐economic harshness on extreme response style. Climato‐economic theorising postulates that a more threatening climate in poorer countries, in contrast to countries with a more comforting climate and richer countries with a more challenging climate, triggers intolerance of ambiguity and uncertainty avoidance inherent to conservatism, in‐group favouritism and autocracy. Scores of extreme response style at country level, a proxy of this cluster of cultural characteristics, were extracted from students' responses in the Programme for International Student Assessment to test the hypothesis. In a series of hierarchical regression analysis across 64 countries, cold demands, heat demands and GDP per capita showed a highly significant interaction effect on extreme response style, predicting in total 30.7% of the variance. Extreme response style was highest in poorer countries with higher climatic demands, and lowest in richer countries with lower climate demands. Implications are discussed.     

Loneliness and Suicidal Risk in Young Adults: Does Believing in a Changeable Future Help Minimize Suicidal Risk Among the Lonely?

This study examined loneliness and future orientation as predictors of suicidal risk, namely, depressive symptoms and suicide ideation, in a sample of 228 college students (54 males and 174 females). Results of regression analyses indicated that loneliness was a significant predictor of both indices of suicidal risk. The inclusion of future orientation was found to significantly augment the prediction model of both depressive symptoms and suicide ideation, even after accounting for loneliness. Noteworthy, beyond loneliness and future orientation, the Loneliness × Future Orientation interaction term was found to further augment both prediction models of suicidal risk. Consistent with the notion that future orientation is an important buffer of suicidal risk, among lonely students, those with high future orientation, compared to low future orientation, were found to report significantly lower levels of depressive symptoms and suicide ideation. Some implications of the present findings for studying both risk and protective factors associated with suicidal risk in young adults are discussed.     

Unequal Care,Unequal Work: Toward a more Comprehensive Understanding of Gender Inequality in Post-Reform Urban China

Sex Roles - Over the last four decades, as China has transitioned from a socialist centralized economy to a productivity-and-efficiency-oriented market economy, so too have the country’s...     

PCI术后患者的血糖管理

经皮冠状动脉介入治疗(PCI)已成为冠心病治疗及急性心肌梗死(AMI)血运重建的有效手段。取得令人满意的效果,而被临床广泛接受和应用。在冠心病患者中糖代谢异常发生率显著高于一般人群。有研究显示高血糖是引起冠状动脉支架再狭窄的独立危险因素。因此糖尿病患者PCI术后必须进行严格的血糖管理。根据目前研究结果,可能血糖目标定为餐前血糖7.8mmol/L,且随机血糖10.0mmol/L较为合适。     

以经为径学神仙 乐在人间度有缘——2010中国崂山论道暨第二届玄门讲经活动隆重举行

<正>7月24日至25日,在全国大部分地区笼罩在酷暑高温中的时候,青岛崂山却是一片清凉。由中国道教协会主办,山东省道教协会协办,青岛崂山论道组委会承办的"2010     

本底抉择:翟振明对哈贝马斯超越的关键——兼评翟振明教授英文专著《本底抉择与道德理论》

<本底抉择与道德理论>是翟振明教授在美国出版的一本伦理学专著.在这部著作中,翟振明以哈贝马斯的交互理性及对话伦理为理论出发点,提出了本底抉择的概念,从而形成了对哈贝马斯理论的某种超越.在交互共同体中,翟振明赋予交互共同体中每个成员的选择以最本底的意义,哈姆雷特式的经典问题"To-Be-Or-Not-To-Be"成为每个成员进行本底抉择时必须直面的问题.更为重要的是,翟振明将本底抉择建基于真正的人(具有人的度规的人)之上,并对人的生命给予一种现象学意义的审视.     

论新中国建立初期宗教界对宗教制度民主改革的贡献

中国宗教界素有自我革新和与中国共产党合作的传统,在党和国家的推动下,中国宗教界对旧中国宗教制度进行了全面的民主改革,克服了旧中国宗教所具有的半封建和半殖民地性质,开始了宗教与新中国和社会主义社会相适应的历程.改革后的中国宗教获得了新生,宗教界人士成了爱国统一战线的重要组成部分,广大信教群众成了新中国的一支重要建设力量.何虎生.中国人民大学党史系工作.