汉语声调对称规则的内隐学习及变异性效应

关于内隐学习能否获得底层的抽象规则,研究一直存在争议。该研究通过有效地控制组块和重复结构等表面特征,并操纵规则所在背景的变异性大小,考察了两种汉语声调对称规则——逆行和倒映的内隐学习。结果发现,只有在背景变异较大时,被试才能够超越组块等表面特征,进而无意识地获得汉语声调对称规则的结构知识。该研究证明内隐学习能够获得抽象规则,并从背景变异性效应的角度为考察该问题提供了新的视角。     

运动情境四维成就目标定向量表的初步编制——以第十二届特奥会中国籍智力残疾运动员为被试

该研究在文献分析和访谈的基础上,确定智力残疾运动领域成就目标定向的四维结构并编制初测问卷。对400名特奥会运动员进行了施测,对数据进行项目分析、验证性因素分析和信度分析。验证性因素分析和信度分析显示,问卷具有较好的效度和信度,可以作为运动领域四维目标定向的测量工具。     

风险知觉研究的历史回顾与展望

风险知觉是指人对潜伏于环境中的危险的主观评定方式或评定值,以“不确定性”为本质特征。在对心理学领域中关于风险知觉研究的三个历史阶段进行回顾的基础上,介绍了不同时期风险知觉的研究内容和研究方法,指出已往研究在风险值评定和危险源识别等方面存在的问题,从理论、测量、扩展三方面对今后的研究进行了展望。     

Dorsomedial prefrontal cortex 5-HT6 receptors regulate anxiety-like behavior

The dorsomedial prefrontal cortex (dmPFC) plays a very important role in decision-related and anxiety-related information processing. It has enriched 5-HT6 receptors; however, the precise role of dmPFC 5-HT6 receptors in anxiety remains to be fully investigated. In this study, we injected dmPFC with the 5-HT6 receptor agonist EMD 386088 and antagonist SB 271046 using stereotactic technology. 5-HT6 receptor activation in mice increased time spent in the center area on the open-field test, increased exploration of the open arms on the elevated plus maze test, and increased ratio on the social interaction test. 5-HT6 receptor inactivation induced the opposite effects. In brain slices, EMD 386088 decreased both spontaneous inhibitory postsynaptic currents (sIPSC) and spontaneous excitatory postsynaptic currents (sEPSC), while SB 271046 only increased sEPSC. These effects of EMD 386088 and SB 271046 could be reversed by the GABA_A receptor antagonist bicuculline (BMI) and positive allosteric modulator clonazepam (CLZ), respectively. Our results suggest that neurotransmission in the dmPFC by 5-HT6 receptor activation and inhibition may play an important role in anxiety-like behavior, and may provide new insight into the pathological mechanism and potential target of anxiety disorders.     

西美尔关于现代宗教形而上学重建的构想——从外在的超验对象到内在的生命品性

在"生命"反抗"形式"的现代性文化境遇下,传统宗教也发生了现代转化,即宗教信仰成为宗教生命冲动的表达,这既使"宗教"由外在建构走向活生生的内在的"宗教性"生存,也面临着失去确定的形而上学目标的现代性困境。走出这一困境只能通过一条内在的精神的途径,就是将"灵魂的宗教性存在本身"视为"形而上学的价值",由此跳出主体需要和客体对象之间的二元对立,故而,确立起灵魂存在的形而上学宗教性的自觉意识和内在信仰是宗教现代性重建的关键。     

Working memory deficits, increased anxiety-like traits, and seizure susceptibility in BDNF overexpressing mice

BDNF regulates components of cognitive processes and has been implicated in psychiatric disorders. Here we report that genetic overexpression of the BDNF mature isoform (BDNF-tg) in female mice impaired working memory functions while sparing components of fear conditioning. BDNF-tg mice also displayed reduced breeding efficiency, higher anxiety-like scores, high self-grooming, impaired prepulse inhibition, and higher susceptibility to seizures when placed in a new empty cage, as compared with wild-type (WT) littermate controls. Control measures of general health, locomotor activity, motor coordination, depression-related behaviors, and sociability did not differ between genotypes. The present findings, indicating detrimental effects of life-long increased BDNF in mice, may inform human studies evaluating the role of BDNF functional genetic variations on cognitive abilities and vulnerability to psychiatric disorders.     

Attentional bias to emotional stimuli is altered during moderate- but not high-intensity exercise

Little is known regarding how attention to emotional stimuli is affected during simultaneously performed exercise. Attentional biases to emotional face stimuli were assessed in 34 college students (17 women) using the dot-probe task during counterbalanced conditions of moderate- (heart rate at 45% peak oxygen consumption) and high-intensity exercise (heart rate at 80% peak oxygen consumption) compared with seated rest. The dot-probe task consisted of 1 emotional face (pleasant or unpleasant) paired with a neutral face for 1,000 ms; 256 trials (128 trials for each valence) were presented during each condition. Each condition lasted approximately 10 min. Participants were instructed to perform each trial of the dot-probe task as quickly and accurately as possible during the exercise and rest conditions. During moderate-intensity exercise, participants exhibited significantly greater attentional bias scores to pleasant compared with unpleasant faces (p < .01), whereas attentional bias scores to emotional faces did not differ at rest or during high-intensity exercise (p > .05). In addition, the attentional bias to unpleasant faces was significantly reduced during moderate-intensity exercise compared with that during rest (p < .05). These results provide behavioral evidence that during exercise at a moderate intensity, there is a shift in attention allocation toward pleasant emotional stimuli and away from unpleasant emotional stimuli. Future work is needed to determine whether acute exercise may be an effective treatment approach to reduce negative bias or enhance positive bias in individuals diagnosed with mood or anxiety disorders, or whether attentional bias during exercise predicts adherence to exercise.     

眼跳任务中的偏心距效应

采用完全被试内设计,控制了眼跳任务类型(朝向眼跳、反向眼跳)和目标偏心距水平,考察了大学生在两种眼跳任务中的偏心距效应,即目标刺激相对于屏幕中心的距离对于眼跳过程的影响.研究结果发现:(1)反向眼跳任务中的首次眼跳方向错误率显著高于朝向眼跳,眼跳潜伏期也显著较长.(2)在朝向和反向眼跳过程中,都出现了目标的偏心距效应,即随着目标偏心距的增大,眼跳潜伏期缩短,眼跳落点视角增大.     

学校组织气氛对教师工作倦怠的影响

问卷调查了410名北京市中学教师,探讨了学校组织气氛对教师工作倦怠的影响。结果发现:教师的工作倦怠没有性别、是否班主任、年龄、任课班级数量、学生人数、周任课时数上的差别。在职称和婚姻因素上有明显的差别,玩世不恭维度上,高级职称的教师工作倦怠明显高于中教一级和中教二级教师,中教一级和中教二级教师之间的工作倦怠没有显著差异,单身教师的情绪衰竭和成就感低落比己婚教师明显偏高。在控制了人口统计学变量之后,分层回归和优势分析发现:支持行为和限制行为能显著预测情绪衰竭,限制行为的贡献更大;支持行为、监督行为、限制行为和同事行为能显著预测玩世不恭,支持行为的贡献更大;支持行为、同事行为和疏远行为能显著预测成就感低落,同事行为的贡献更大;亲密行为对情绪衰竭、玩世不恭和成就感低落没有预测作用。     

自尊能缓冲死亡焦虑吗?--自尊对死亡提醒条件下大学生死亡焦虑的影响

采用2×4两因素组间设计,以168名大学生为被试,考察了自尊对死亡提醒条件下死亡焦虑的影响.结果发现(1)死亡提醒操作确实唤醒了大学生的死亡焦虑,焦虑平均值为2.28±0.49;(2)支持了西方文化背景下提出的自尊缓冲死亡焦虑的假设,即死亡提醒条件下,自尊越高,死亡焦虑越低,说明自尊对死亡焦虑的缓冲作用是一种普遍心理现象.