情绪Stroop效应:来自汉字的证据

通过颜色命名和词汇阅读两种作业任务,采用情绪词、中性词两类刺激材料,探索情绪Stroop效应中Stroop加工的特点和机制。结果发现：（1）两种作业任务都发现明显的情绪Stroop效应;（2）两种作业任务中情绪Stroop效应不受情绪词的抽象性影响。它说明情绪stroop效应与经典的Stroop效应是两种独立的现象,前者的加工过程是由于情绪词所产生的情绪威胁而导致反应延迟,而不是经典Stroop效应的选择性注意机制。     

类别学习中的认知学习机制

采用归类任务,比较不同知识条件、不同特征呈现方式下,对非定义特征维度的掌握,验证类别学习的认知学习机制。结果发现对非定义特征维度的掌握,在样例特征固定位置呈现条件下较多,而在样例特征随机呈现条件下较少;在知识定义特征维度条件下较多,而在机械定义特征维度条件下较少。研究结果支持了类别学习的认知学习机制。     

Brain activation detection by neighborhood one-class SVM

Brain activation detection is an important problem in fMRI data analysis. In this paper, we propose a data-driven activation detection method called neighborhood one-class SVM (NOC-SVM). Based on the probability distribution assumption of the one-class SVM algorithm and the neighborhood consistency hypothesis, NOC-SVM identifies a voxel as either an activated or non-activated voxel by a weighted distance between its near neighbors and a hyperplane in a high-dimensional kernel space. The proposed NOC-SVM are evaluated by using both synthetic and real datasets. On two synthetic datasets with different SNRs, NOC-SVM performs better than K-means and fuzzy K-means clustering and is comparable to POM. On a real fMRI dataset, NOC-SVM can discover activated regions similar to K-means and fuzzy K-means. These results show that the proposed algorithm is an effective activation detection method for fMRI data analysis. Furthermore, it is stabler than K-means and fuzzy K-means clustering.     

组织中的进谏行为

进谏行为是指以改善环境为目的,以变化为导向,富有建没性的人际问的交流行为。文章系统地介绍了进谏行为的概念,进谏行为对组织的作用以及影响进谏行为的因素。     

Purple sweet potato color repairs d-galactose-induced spatial learning and memory impairment by regulating the expression of synaptic proteins

Purple sweet potato color (PSPC), a class of naturally occurring anthocyanins used to color food (E163), has been reported to possess a variety of biological activities, including anti-oxidant, anti-tumor, and anti-inflammatory. The effect of PSPC on the spatial learning and memory of mice treated with d-galactose (d-gal) was evaluated by the Morris water maze; d-gal-treated mice had decreased performance compared with mice in the vehicle and PSPC groups, while the PSPC + d-gal group showed significantly shortened escape latency to platform, increased swimming speed, more target quadrant search time and more platform crossings as compared with the d-gal group. Brain functions, such as memory formation and recovery of function after injury, depend on proper regulation of the expression levels of the pre- and post-synaptic proteins. We investigated the expression of four pre-synaptic proteins (growth-associated protein-43, synapsin-I, synaptophysin, and synaptotagmin) and two post-synaptic proteins (post-synaptic density protein-95 and Ca²⁺/calmodulin-dependent protein kinase II) in the hippocampus and cerebral cortex, respectively, in response to different treatments. Western blotting analysis showed that there were significant decreases in the expression of these representative synaptic proteins in the hippocampus and cerebral cortex of d-gal-treated mice. Interestingly, these decreased expression levels of synaptic proteins could be reversed by PSPC. The levels of expression of these representative synaptic proteins in mice treated with PSPC alone were not significantly different from those in untreated mice. The results of this study suggested that memory impairment and synaptic protein loss in d-gal-treated mice may be improved by treatment with PSPC.     

听觉障碍学生的社会观点采择能力发展研究

以中国寓言图画故事为刺激材料,采用个别测验的方式,考察了特殊学校小学三、四、五、六年级及初中一、三年级共122名听觉障碍学生的社会观点采择能力及其发展,结果发现：(1)听觉障碍学生的社会观点采择能力存在显著的年级差异;(2)听觉障碍学生的社会观点采择能力发展不存在性别差异;(3)听觉障碍学生的社会观点采择能力明显地受父母文化程度的影响。     

“I know you can do this” versus “How can you be so stupid?” Feedback among Chinese and American young adult friends

According to past research, young adults prefer positive feedback from their friends, but emotional reactions to negative feedback are less severe in Korea than in the United States. We extended this past work in several ways: We studied both giving and receiving feedback, recruited Chinese young adults, used realistic scenarios, and employed the situation‐sampling method. Using text‐message‐based vignettes, Study 1 found that both American and Chinese friends used happy emojis when exchanging positive feedback whereas Americans used less positive emojis than did the Chinese when exchanging negative feedback. We then collected actual examples of feedback that people had given to their friends (Study 2a) and showed them to new samples of Chinese and American young adults (Study 2b). This situation‐sampling methodology found that (a) Americans rated negative feedback from both cultures especially negatively, and (b) negative feedback examples from China were rated especially negatively by people in both cultures. That is, although Chinese negative feedback is seemingly more harsh, Chinese young adults do not react as negatively.